/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=BIGGEST --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/Problem14_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 14:01:13,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 14:01:13,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 14:01:13,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 14:01:13,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 14:01:13,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 14:01:13,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 14:01:13,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 14:01:13,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 14:01:13,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 14:01:13,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 14:01:13,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 14:01:13,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 14:01:13,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 14:01:13,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 14:01:13,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 14:01:13,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 14:01:13,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 14:01:13,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 14:01:13,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 14:01:13,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 14:01:13,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 14:01:13,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 14:01:13,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 14:01:13,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 14:01:13,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 14:01:13,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 14:01:13,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 14:01:13,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 14:01:13,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 14:01:13,663 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 14:01:13,664 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 14:01:13,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 14:01:13,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 14:01:13,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 14:01:13,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 14:01:13,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 14:01:13,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 14:01:13,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 14:01:13,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 14:01:13,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 14:01:13,669 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 [2020-10-12 14:01:13,690 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 14:01:13,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 14:01:13,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 14:01:13,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 14:01:13,692 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 14:01:13,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 14:01:13,693 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 14:01:13,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 14:01:13,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 14:01:13,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 14:01:13,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 14:01:13,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 14:01:13,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 14:01:13,694 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 14:01:13,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 14:01:13,694 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 14:01:13,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 14:01:13,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 14:01:13,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 14:01:13,695 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 14:01:13,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 14:01:13,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:01:13,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 14:01:13,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 14:01:13,696 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 14:01:13,696 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 14:01:13,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 14:01:13,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 14:01:13,697 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 14:01:13,697 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 14:01:14,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 14:01:14,054 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 14:01:14,060 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 14:01:14,062 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 14:01:14,063 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 14:01:14,063 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label45.c [2020-10-12 14:01:14,129 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e2e1117c/9025c05e85494c47b23874dd5ff05277/FLAG3e2262029 [2020-10-12 14:01:14,700 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 14:01:14,701 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label45.c [2020-10-12 14:01:14,717 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e2e1117c/9025c05e85494c47b23874dd5ff05277/FLAG3e2262029 [2020-10-12 14:01:14,945 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e2e1117c/9025c05e85494c47b23874dd5ff05277 [2020-10-12 14:01:14,955 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 14:01:14,958 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 14:01:14,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 14:01:14,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 14:01:14,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 14:01:14,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:01:14" (1/1) ... [2020-10-12 14:01:14,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@92e95d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:01:14, skipping insertion in model container [2020-10-12 14:01:14,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:01:14" (1/1) ... [2020-10-12 14:01:14,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 14:01:15,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 14:01:15,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:01:15,669 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 14:01:15,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:01:15,844 INFO L208 MainTranslator]: Completed translation [2020-10-12 14:01:15,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:01:15 WrapperNode [2020-10-12 14:01:15,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 14:01:15,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 14:01:15,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 14:01:15,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 14:01:15,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:01:15" (1/1) ... [2020-10-12 14:01:15,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:01:15" (1/1) ... [2020-10-12 14:01:15,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:01:15" (1/1) ... [2020-10-12 14:01:15,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:01:15" (1/1) ... [2020-10-12 14:01:15,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:01:15" (1/1) ... [2020-10-12 14:01:15,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:01:15" (1/1) ... [2020-10-12 14:01:15,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:01:15" (1/1) ... [2020-10-12 14:01:15,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 14:01:15,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 14:01:15,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 14:01:15,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 14:01:15,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:01:15" (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 [2020-10-12 14:01:16,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 14:01:16,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 14:01:16,066 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 14:01:16,067 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 14:01:16,067 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 14:01:16,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 14:01:16,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 14:01:16,068 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 14:01:16,069 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 14:01:16,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 14:01:16,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 14:01:17,716 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 14:01:17,716 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 14:01:17,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:01:17 BoogieIcfgContainer [2020-10-12 14:01:17,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 14:01:17,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 14:01:17,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 14:01:17,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 14:01:17,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 02:01:14" (1/3) ... [2020-10-12 14:01:17,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634c1991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:01:17, skipping insertion in model container [2020-10-12 14:01:17,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:01:15" (2/3) ... [2020-10-12 14:01:17,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634c1991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:01:17, skipping insertion in model container [2020-10-12 14:01:17,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:01:17" (3/3) ... [2020-10-12 14:01:17,750 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label45.c [2020-10-12 14:01:17,763 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 14:01:17,772 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 14:01:17,788 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 14:01:17,815 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 14:01:17,815 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 14:01:17,816 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 14:01:17,816 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 14:01:17,816 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 14:01:17,816 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 14:01:17,816 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 14:01:17,816 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 14:01:17,845 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states. [2020-10-12 14:01:17,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-12 14:01:17,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:01:17,855 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] [2020-10-12 14:01:17,855 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:01:17,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:01:17,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1020079963, now seen corresponding path program 1 times [2020-10-12 14:01:17,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:01:17,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346112540] [2020-10-12 14:01:17,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:01:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:18,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:18,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:18,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 14:01:18,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:01:18,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 442 [2020-10-12 14:01:18,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:18,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:01:18,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:01:18,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 14:01:18,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:01:18,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:01:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:18,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:18,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:18,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:01:18,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:01:18,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 14:01:18,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:18,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:01:18,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:01:18,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:01:18,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:01:18,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:01:18,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346112540] [2020-10-12 14:01:18,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:01:18,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 14:01:18,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299628084] [2020-10-12 14:01:18,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 14:01:18,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:01:18,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 14:01:18,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 14:01:18,650 INFO L87 Difference]: Start difference. First operand 254 states. Second operand 4 states. [2020-10-12 14:01:20,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:01:20,437 INFO L93 Difference]: Finished difference Result 698 states and 1240 transitions. [2020-10-12 14:01:20,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:01:20,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-10-12 14:01:20,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:01:20,457 INFO L225 Difference]: With dead ends: 698 [2020-10-12 14:01:20,457 INFO L226 Difference]: Without dead ends: 380 [2020-10-12 14:01:20,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:01:20,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-10-12 14:01:20,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 376. [2020-10-12 14:01:20,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-10-12 14:01:20,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 552 transitions. [2020-10-12 14:01:20,544 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 552 transitions. Word has length 42 [2020-10-12 14:01:20,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:01:20,545 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 552 transitions. [2020-10-12 14:01:20,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 14:01:20,545 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 552 transitions. [2020-10-12 14:01:20,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-12 14:01:20,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:01:20,553 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:01:20,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 14:01:20,554 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:01:20,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:01:20,554 INFO L82 PathProgramCache]: Analyzing trace with hash 753315333, now seen corresponding path program 1 times [2020-10-12 14:01:20,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:01:20,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594699217] [2020-10-12 14:01:20,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:01:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:20,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:20,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:21,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:21,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:21,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 14:01:21,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:01:21,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1082 [2020-10-12 14:01:21,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:21,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:01:21,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:01:21,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 14:01:21,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:01:21,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:01:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:21,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:21,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:21,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:01:21,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:01:21,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 14:01:21,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:21,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:01:21,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:01:21,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:01:21,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 14:01:21,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:01:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:21,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:21,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:21,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 14:01:21,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:01:21,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-12 14:01:21,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:21,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:01:21,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:01:21,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 14:01:21,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:01:22,038 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:01:22,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594699217] [2020-10-12 14:01:22,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:01:22,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 14:01:22,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408562537] [2020-10-12 14:01:22,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:01:22,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:01:22,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:01:22,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:01:22,042 INFO L87 Difference]: Start difference. First operand 376 states and 552 transitions. Second operand 7 states. [2020-10-12 14:01:24,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:01:24,056 INFO L93 Difference]: Finished difference Result 1126 states and 1670 transitions. [2020-10-12 14:01:24,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 14:01:24,057 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-10-12 14:01:24,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:01:24,063 INFO L225 Difference]: With dead ends: 1126 [2020-10-12 14:01:24,063 INFO L226 Difference]: Without dead ends: 756 [2020-10-12 14:01:24,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:01:24,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2020-10-12 14:01:24,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 748. [2020-10-12 14:01:24,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 748 states. [2020-10-12 14:01:24,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1004 transitions. [2020-10-12 14:01:24,117 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1004 transitions. Word has length 111 [2020-10-12 14:01:24,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:01:24,118 INFO L479 AbstractCegarLoop]: Abstraction has 748 states and 1004 transitions. [2020-10-12 14:01:24,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:01:24,118 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1004 transitions. [2020-10-12 14:01:24,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 14:01:24,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:01:24,121 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:01:24,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 14:01:24,121 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:01:24,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:01:24,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1115759046, now seen corresponding path program 1 times [2020-10-12 14:01:24,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:01:24,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695298428] [2020-10-12 14:01:24,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:01:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:24,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:24,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:24,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:24,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:24,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 14:01:24,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:01:24,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 642 [2020-10-12 14:01:24,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:24,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:01:24,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:01:24,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 14:01:24,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:01:24,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:01:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:24,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:24,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:24,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:01:24,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:01:24,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 14:01:24,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:24,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:01:24,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:01:24,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:01:24,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:01:24,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:01:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:24,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:24,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:24,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 14:01:24,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:01:24,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-12 14:01:24,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:24,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:01:24,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:01:24,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 14:01:24,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:01:25,021 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:01:25,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695298428] [2020-10-12 14:01:25,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:01:25,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 14:01:25,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434166803] [2020-10-12 14:01:25,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:01:25,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:01:25,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:01:25,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:01:25,024 INFO L87 Difference]: Start difference. First operand 748 states and 1004 transitions. Second operand 7 states. [2020-10-12 14:01:26,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:01:26,985 INFO L93 Difference]: Finished difference Result 2078 states and 2858 transitions. [2020-10-12 14:01:26,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:01:26,986 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-12 14:01:26,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:01:26,996 INFO L225 Difference]: With dead ends: 2078 [2020-10-12 14:01:26,996 INFO L226 Difference]: Without dead ends: 1336 [2020-10-12 14:01:26,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:01:27,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2020-10-12 14:01:27,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 1310. [2020-10-12 14:01:27,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1310 states. [2020-10-12 14:01:27,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1650 transitions. [2020-10-12 14:01:27,049 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1650 transitions. Word has length 114 [2020-10-12 14:01:27,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:01:27,050 INFO L479 AbstractCegarLoop]: Abstraction has 1310 states and 1650 transitions. [2020-10-12 14:01:27,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:01:27,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1650 transitions. [2020-10-12 14:01:27,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-12 14:01:27,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:01:27,056 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:01:27,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 14:01:27,056 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:01:27,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:01:27,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1527399138, now seen corresponding path program 1 times [2020-10-12 14:01:27,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:01:27,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847737931] [2020-10-12 14:01:27,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:01:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:27,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:27,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:27,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:27,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:28,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:30,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:30,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-12 14:01:30,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 14:01:30,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3846 [2020-10-12 14:01:30,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:30,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:01:30,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:01:30,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-12 14:01:30,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:01:31,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:01:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:31,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:31,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:31,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:01:31,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:01:31,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 14:01:31,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:31,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:01:31,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:01:31,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:01:31,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:01:31,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:01:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:31,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:31,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:31,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 14:01:31,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:01:31,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-12 14:01:31,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:31,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:01:31,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:01:31,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 14:01:31,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:01:31,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-12 14:01:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:31,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:31,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:31,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 14:01:31,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:01:31,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-12 14:01:31,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:31,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:01:31,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:01:31,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-12 14:01:31,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:01:31,645 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 71 proven. 78 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 14:01:31,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847737931] [2020-10-12 14:01:31,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:01:31,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:01:31,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141118169] [2020-10-12 14:01:31,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:01:31,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:01:31,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:01:31,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:01:31,650 INFO L87 Difference]: Start difference. First operand 1310 states and 1650 transitions. Second operand 8 states. [2020-10-12 14:01:33,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:01:33,966 INFO L93 Difference]: Finished difference Result 2870 states and 3736 transitions. [2020-10-12 14:01:33,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 14:01:33,967 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 209 [2020-10-12 14:01:33,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:01:33,982 INFO L225 Difference]: With dead ends: 2870 [2020-10-12 14:01:33,983 INFO L226 Difference]: Without dead ends: 1748 [2020-10-12 14:01:33,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-12 14:01:33,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2020-10-12 14:01:34,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1684. [2020-10-12 14:01:34,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1684 states. [2020-10-12 14:01:34,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2079 transitions. [2020-10-12 14:01:34,076 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2079 transitions. Word has length 209 [2020-10-12 14:01:34,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:01:34,078 INFO L479 AbstractCegarLoop]: Abstraction has 1684 states and 2079 transitions. [2020-10-12 14:01:34,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:01:34,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2079 transitions. [2020-10-12 14:01:34,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-12 14:01:34,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:01:34,086 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:01:34,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 14:01:34,087 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:01:34,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:01:34,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1046551303, now seen corresponding path program 1 times [2020-10-12 14:01:34,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:01:34,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725301107] [2020-10-12 14:01:34,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:01:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:34,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:34,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:34,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:35,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:35,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:35,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-12 14:01:35,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:01:35,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1677 [2020-10-12 14:01:35,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:35,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:01:35,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-12 14:01:35,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-12 14:01:35,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:01:35,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:01:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:35,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:35,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:35,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:01:35,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:01:35,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 14:01:35,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:35,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:01:35,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:01:35,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:01:35,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:01:35,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:01:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:35,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:36,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:36,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 14:01:36,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:01:36,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-12 14:01:36,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:36,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:01:36,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:01:36,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 14:01:36,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:01:36,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-12 14:01:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:36,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:36,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:36,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:36,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-12 14:01:36,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:01:36,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-10-12 14:01:36,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:36,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:01:36,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:01:36,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-12 14:01:36,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:01:36,795 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 114 proven. 35 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 14:01:36,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725301107] [2020-10-12 14:01:36,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:01:36,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:01:36,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491029743] [2020-10-12 14:01:36,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:01:36,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:01:36,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:01:36,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:01:36,798 INFO L87 Difference]: Start difference. First operand 1684 states and 2079 transitions. Second operand 6 states. [2020-10-12 14:01:38,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:01:38,561 INFO L93 Difference]: Finished difference Result 3762 states and 4796 transitions. [2020-10-12 14:01:38,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:01:38,568 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 266 [2020-10-12 14:01:38,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:01:38,579 INFO L225 Difference]: With dead ends: 3762 [2020-10-12 14:01:38,580 INFO L226 Difference]: Without dead ends: 1898 [2020-10-12 14:01:38,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:01:38,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2020-10-12 14:01:38,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1686. [2020-10-12 14:01:38,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1686 states. [2020-10-12 14:01:38,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1686 states to 1686 states and 2036 transitions. [2020-10-12 14:01:38,638 INFO L78 Accepts]: Start accepts. Automaton has 1686 states and 2036 transitions. Word has length 266 [2020-10-12 14:01:38,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:01:38,638 INFO L479 AbstractCegarLoop]: Abstraction has 1686 states and 2036 transitions. [2020-10-12 14:01:38,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:01:38,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1686 states and 2036 transitions. [2020-10-12 14:01:38,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-12 14:01:38,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:01:38,644 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 14:01:38,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 14:01:38,644 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:01:38,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:01:38,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1363181862, now seen corresponding path program 1 times [2020-10-12 14:01:38,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:01:38,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288753270] [2020-10-12 14:01:38,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:01:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:38,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:38,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:38,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:39,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:42,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:42,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:43,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:43,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-12 14:01:43,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 14:01:43,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 14:01:43,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:43,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:01:43,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:01:43,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-12 14:01:43,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:01:43,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:01:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:43,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:43,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:43,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:01:43,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:01:43,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 14:01:43,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:43,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:01:43,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:01:43,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:01:43,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:01:43,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:01:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:43,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:44,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:44,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 14:01:44,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:01:44,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-12 14:01:44,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:44,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:01:44,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:01:44,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 14:01:44,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:01:44,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 14:01:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:44,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:44,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:44,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 14:01:44,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:01:44,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-12 14:01:44,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:44,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:01:44,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:01:44,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 14:01:44,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:01:44,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-12 14:01:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:44,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:44,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:44,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 14:01:44,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:01:44,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 14:01:44,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:44,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:01:44,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-12 14:01:44,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:01:44,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:01:44,633 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 110 proven. 214 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 14:01:44,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288753270] [2020-10-12 14:01:44,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:01:44,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:01:44,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883889166] [2020-10-12 14:01:44,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:01:44,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:01:44,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:01:44,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:01:44,636 INFO L87 Difference]: Start difference. First operand 1686 states and 2036 transitions. Second operand 8 states. [2020-10-12 14:01:46,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:01:46,335 INFO L93 Difference]: Finished difference Result 3022 states and 3717 transitions. [2020-10-12 14:01:46,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 14:01:46,337 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 308 [2020-10-12 14:01:46,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:01:46,345 INFO L225 Difference]: With dead ends: 3022 [2020-10-12 14:01:46,345 INFO L226 Difference]: Without dead ends: 1708 [2020-10-12 14:01:46,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:01:46,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2020-10-12 14:01:46,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1690. [2020-10-12 14:01:46,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-12 14:01:46,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2034 transitions. [2020-10-12 14:01:46,395 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2034 transitions. Word has length 308 [2020-10-12 14:01:46,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:01:46,396 INFO L479 AbstractCegarLoop]: Abstraction has 1690 states and 2034 transitions. [2020-10-12 14:01:46,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:01:46,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2034 transitions. [2020-10-12 14:01:46,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2020-10-12 14:01:46,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:01:46,406 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-10-12 14:01:46,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 14:01:46,406 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:01:46,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:01:46,407 INFO L82 PathProgramCache]: Analyzing trace with hash -881371869, now seen corresponding path program 1 times [2020-10-12 14:01:46,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:01:46,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918851886] [2020-10-12 14:01:46,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:01:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:46,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:46,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:46,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:47,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:50,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:51,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:51,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 432 [2020-10-12 14:01:51,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 14:01:51,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 14:01:51,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:51,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:01:51,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 390 [2020-10-12 14:01:51,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 14:01:51,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:01:51,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:01:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:51,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:51,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:51,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:01:51,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:01:51,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:01:51,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:51,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:01:51,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:01:51,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:01:51,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:01:51,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:01:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:51,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:51,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:51,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 14:01:51,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:01:51,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 14:01:51,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:51,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:01:51,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:01:51,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:01:51,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:01:51,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 14:01:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:51,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:51,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:51,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:01:51,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:01:51,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 14:01:51,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:51,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:01:51,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:01:51,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:01:51,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:01:51,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 14:01:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:51,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:51,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:51,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 14:01:51,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:01:51,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 14:01:51,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:51,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:01:51,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:01:51,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:01:51,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:01:51,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-12 14:01:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:51,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:51,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:51,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 14:01:51,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:01:51,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-12 14:01:51,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:51,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:01:51,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:01:51,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 14:01:51,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:01:51,998 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 145 proven. 4 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2020-10-12 14:01:51,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918851886] [2020-10-12 14:01:51,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:01:51,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:01:52,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132770167] [2020-10-12 14:01:52,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:01:52,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:01:52,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:01:52,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:01:52,002 INFO L87 Difference]: Start difference. First operand 1690 states and 2034 transitions. Second operand 5 states. [2020-10-12 14:01:53,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:01:53,058 INFO L93 Difference]: Finished difference Result 3026 states and 3730 transitions. [2020-10-12 14:01:53,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:01:53,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 416 [2020-10-12 14:01:53,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:01:53,067 INFO L225 Difference]: With dead ends: 3026 [2020-10-12 14:01:53,068 INFO L226 Difference]: Without dead ends: 1696 [2020-10-12 14:01:53,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:01:53,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1696 states. [2020-10-12 14:01:53,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1696 to 1690. [2020-10-12 14:01:53,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-12 14:01:53,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2031 transitions. [2020-10-12 14:01:53,113 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2031 transitions. Word has length 416 [2020-10-12 14:01:53,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:01:53,114 INFO L479 AbstractCegarLoop]: Abstraction has 1690 states and 2031 transitions. [2020-10-12 14:01:53,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:01:53,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2031 transitions. [2020-10-12 14:01:53,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2020-10-12 14:01:53,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:01:53,123 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 14:01:53,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 14:01:53,124 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:01:53,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:01:53,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1676206645, now seen corresponding path program 1 times [2020-10-12 14:01:53,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:01:53,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855865512] [2020-10-12 14:01:53,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:01:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:53,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:53,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:53,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:54,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:57,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:58,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:58,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 444 [2020-10-12 14:01:58,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 14:01:58,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 14:01:58,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:58,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:01:58,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 305 [2020-10-12 14:01:58,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 14:01:58,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:01:58,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:01:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:58,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:58,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:58,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:01:58,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:01:58,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 14:01:58,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:58,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:01:58,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:01:58,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:01:58,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:01:58,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:01:58,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:58,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:58,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:58,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 14:01:58,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:01:58,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 14:01:58,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:58,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:01:58,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:01:58,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:01:58,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:01:58,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 14:01:58,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:58,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:58,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:58,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:01:58,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:01:58,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 14:01:58,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:58,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:01:58,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:01:58,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:01:58,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:01:58,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 14:01:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:58,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:58,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:58,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 14:01:58,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:01:58,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 14:01:58,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:58,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:01:58,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:01:58,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 14:01:58,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:01:58,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-12 14:01:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:01:58,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:01:58,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:01:58,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 14:01:58,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:01:58,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-12 14:01:58,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:01:58,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:01:58,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:01:58,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 14:01:58,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:01:58,851 INFO L134 CoverageAnalysis]: Checked inductivity of 655 backedges. 403 proven. 2 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2020-10-12 14:01:58,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855865512] [2020-10-12 14:01:58,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:01:58,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:01:58,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874106301] [2020-10-12 14:01:58,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:01:58,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:01:58,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:01:58,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:01:58,854 INFO L87 Difference]: Start difference. First operand 1690 states and 2031 transitions. Second operand 7 states. [2020-10-12 14:02:00,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:02:00,706 INFO L93 Difference]: Finished difference Result 3216 states and 3915 transitions. [2020-10-12 14:02:00,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 14:02:00,707 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 428 [2020-10-12 14:02:00,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:02:00,715 INFO L225 Difference]: With dead ends: 3216 [2020-10-12 14:02:00,716 INFO L226 Difference]: Without dead ends: 1696 [2020-10-12 14:02:00,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 14:02:00,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1696 states. [2020-10-12 14:02:00,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1696 to 1674. [2020-10-12 14:02:00,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1674 states. [2020-10-12 14:02:00,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 1789 transitions. [2020-10-12 14:02:00,770 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 1789 transitions. Word has length 428 [2020-10-12 14:02:00,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:02:00,771 INFO L479 AbstractCegarLoop]: Abstraction has 1674 states and 1789 transitions. [2020-10-12 14:02:00,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:02:00,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 1789 transitions. [2020-10-12 14:02:00,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2020-10-12 14:02:00,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:02:00,783 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2020-10-12 14:02:00,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 14:02:00,783 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:02:00,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:02:00,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1243753009, now seen corresponding path program 1 times [2020-10-12 14:02:00,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:02:00,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855044707] [2020-10-12 14:02:00,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:02:00,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:02:00,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:01,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:02,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:03,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:04,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:05,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:02:05,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 566 [2020-10-12 14:02:05,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 14:02:05,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 14:02:05,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:02:05,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 14:02:05,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 343 [2020-10-12 14:02:05,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-12 14:02:05,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:02:06,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:02:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:02:06,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:06,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:02:06,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:02:06,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:02:06,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:02:06,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:02:06,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:02:06,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:02:06,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:02:06,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:02:06,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:02:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:02:06,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:06,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:02:06,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 14:02:06,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:02:06,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 14:02:06,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:02:06,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:02:06,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:02:06,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:02:06,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:02:06,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 14:02:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:02:06,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:06,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:02:06,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:02:06,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:02:06,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 14:02:06,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:02:06,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:02:06,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:02:06,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:02:06,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:02:06,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 14:02:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:02:06,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:06,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:02:06,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 14:02:06,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:02:06,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 14:02:06,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:02:06,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:02:06,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:02:06,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-12 14:02:06,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:02:06,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-12 14:02:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:02:06,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:06,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:06,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:02:06,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 14:02:06,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:02:06,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-12 14:02:06,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:02:06,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 14:02:06,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:02:06,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-12 14:02:06,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:02:07,085 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2020-10-12 14:02:07,281 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2020-10-12 14:02:07,487 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 59 [2020-10-12 14:02:07,699 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2020-10-12 14:02:07,897 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2020-10-12 14:02:09,556 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 470 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2020-10-12 14:02:09,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855044707] [2020-10-12 14:02:09,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:02:09,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 14:02:09,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257679465] [2020-10-12 14:02:09,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 14:02:09,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:02:09,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 14:02:09,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-12 14:02:09,559 INFO L87 Difference]: Start difference. First operand 1674 states and 1789 transitions. Second operand 13 states. [2020-10-12 14:02:10,279 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-10-12 14:02:10,465 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2020-10-12 14:02:10,746 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2020-10-12 14:02:10,959 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2020-10-12 14:02:11,155 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 64 [2020-10-12 14:02:11,779 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 74 [2020-10-12 14:02:12,338 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 85 [2020-10-12 14:02:12,823 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2020-10-12 14:02:13,024 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2020-10-12 14:02:13,352 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2020-10-12 14:02:13,614 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2020-10-12 14:02:14,040 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 71 [2020-10-12 14:02:14,477 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 74 [2020-10-12 14:02:14,876 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 82 [2020-10-12 14:02:15,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:02:15,280 INFO L93 Difference]: Finished difference Result 3358 states and 3610 transitions. [2020-10-12 14:02:15,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 14:02:15,280 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 550 [2020-10-12 14:02:15,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:02:15,287 INFO L225 Difference]: With dead ends: 3358 [2020-10-12 14:02:15,287 INFO L226 Difference]: Without dead ends: 1647 [2020-10-12 14:02:15,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=249, Invalid=621, Unknown=0, NotChecked=0, Total=870 [2020-10-12 14:02:15,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2020-10-12 14:02:15,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1419. [2020-10-12 14:02:15,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1419 states. [2020-10-12 14:02:15,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 1528 transitions. [2020-10-12 14:02:15,322 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 1528 transitions. Word has length 550 [2020-10-12 14:02:15,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:02:15,323 INFO L479 AbstractCegarLoop]: Abstraction has 1419 states and 1528 transitions. [2020-10-12 14:02:15,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 14:02:15,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 1528 transitions. [2020-10-12 14:02:15,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2020-10-12 14:02:15,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:02:15,330 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:02:15,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 14:02:15,330 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:02:15,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:02:15,331 INFO L82 PathProgramCache]: Analyzing trace with hash -406402426, now seen corresponding path program 1 times [2020-10-12 14:02:15,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:02:15,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556221363] [2020-10-12 14:02:15,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:02:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:02:15,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:15,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:16,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:16,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:20,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:02:20,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 573 [2020-10-12 14:02:20,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:02:20,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4600 [2020-10-12 14:02:20,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:02:20,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 14:02:20,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-12 14:02:20,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-12 14:02:20,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:02:20,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:02:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:02:20,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:20,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:02:20,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:02:20,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:02:20,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:02:20,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:02:20,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:02:20,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:02:20,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:02:20,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:02:20,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:02:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:02:20,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:20,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:02:20,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 14:02:20,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:02:20,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 14:02:20,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:02:20,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:02:20,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:02:20,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:02:20,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:02:20,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 14:02:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:02:20,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:20,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:02:20,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:02:20,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:02:20,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 14:02:20,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:02:20,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:02:20,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:02:20,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:02:20,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:02:20,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 14:02:20,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:02:20,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:20,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:02:20,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 14:02:20,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:02:20,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 14:02:20,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:02:20,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:02:20,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:02:20,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 14:02:20,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:02:20,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-12 14:02:20,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:02:20,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:20,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:21,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:02:21,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 14:02:21,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:02:21,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 651 [2020-10-12 14:02:21,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:02:21,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 14:02:21,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:02:21,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-12 14:02:21,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:02:21,392 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-10-12 14:02:21,633 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2020-10-12 14:02:21,896 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 79 [2020-10-12 14:02:22,171 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2020-10-12 14:02:22,454 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2020-10-12 14:02:22,793 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 83 [2020-10-12 14:02:25,036 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 477 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2020-10-12 14:02:25,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556221363] [2020-10-12 14:02:25,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:02:25,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 14:02:25,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206350830] [2020-10-12 14:02:25,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 14:02:25,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:02:25,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 14:02:25,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-12 14:02:25,041 INFO L87 Difference]: Start difference. First operand 1419 states and 1528 transitions. Second operand 13 states. [2020-10-12 14:02:25,725 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 63 [2020-10-12 14:02:26,296 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 67 [2020-10-12 14:02:26,602 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 68 [2020-10-12 14:02:26,810 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 68 [2020-10-12 14:02:27,067 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 72 [2020-10-12 14:02:27,333 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 88 [2020-10-12 14:02:27,651 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 54 [2020-10-12 14:02:27,846 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2020-10-12 14:02:28,518 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 56 [2020-10-12 14:02:29,085 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 60 [2020-10-12 14:02:29,416 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 61 [2020-10-12 14:02:29,645 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 61 [2020-10-12 14:02:29,923 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 64 [2020-10-12 14:02:30,211 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 67 [2020-10-12 14:02:30,625 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 86 [2020-10-12 14:02:30,969 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2020-10-12 14:02:31,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:02:31,173 INFO L93 Difference]: Finished difference Result 2844 states and 3085 transitions. [2020-10-12 14:02:31,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 14:02:31,174 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 557 [2020-10-12 14:02:31,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:02:31,181 INFO L225 Difference]: With dead ends: 2844 [2020-10-12 14:02:31,181 INFO L226 Difference]: Without dead ends: 1590 [2020-10-12 14:02:31,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=265, Invalid=665, Unknown=0, NotChecked=0, Total=930 [2020-10-12 14:02:31,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2020-10-12 14:02:31,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1580. [2020-10-12 14:02:31,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-10-12 14:02:31,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 1695 transitions. [2020-10-12 14:02:31,221 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 1695 transitions. Word has length 557 [2020-10-12 14:02:31,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:02:31,222 INFO L479 AbstractCegarLoop]: Abstraction has 1580 states and 1695 transitions. [2020-10-12 14:02:31,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 14:02:31,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 1695 transitions. [2020-10-12 14:02:31,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2020-10-12 14:02:31,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:02:31,229 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 14:02:31,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 14:02:31,229 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:02:31,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:02:31,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1163030519, now seen corresponding path program 1 times [2020-10-12 14:02:31,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:02:31,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855996431] [2020-10-12 14:02:31,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:02:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:02:31,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:31,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:32,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:32,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:34,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:36,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:02:36,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 618 [2020-10-12 14:02:36,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 14:02:36,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 14:02:36,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:02:36,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 14:02:36,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-12 14:02:36,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-12 14:02:36,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:02:36,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:02:36,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:02:36,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:36,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:02:36,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:02:36,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:02:36,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:02:36,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:02:36,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:02:36,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:02:36,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:02:36,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:02:36,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:02:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:02:36,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:36,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:02:36,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 14:02:36,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:02:36,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 14:02:36,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:02:36,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:02:36,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:02:36,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:02:36,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:02:36,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 14:02:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:02:36,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:36,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:02:36,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:02:36,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:02:36,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-12 14:02:36,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:02:36,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:02:36,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:02:36,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-12 14:02:36,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:02:36,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 14:02:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:02:36,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:36,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:37,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:02:37,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-12 14:02:37,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:02:37,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 523 [2020-10-12 14:02:37,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:02:37,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 14:02:37,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:02:37,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-12 14:02:37,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:02:37,698 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2020-10-12 14:02:37,846 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-10-12 14:02:38,009 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2020-10-12 14:02:38,161 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2020-10-12 14:02:38,336 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-12 14:02:38,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-10-12 14:02:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:02:38,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:38,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:02:38,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 14:02:38,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:02:38,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 14:02:38,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:02:38,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:02:38,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-12 14:02:38,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:02:38,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:02:39,692 INFO L134 CoverageAnalysis]: Checked inductivity of 849 backedges. 366 proven. 161 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2020-10-12 14:02:39,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855996431] [2020-10-12 14:02:39,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:02:39,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 14:02:39,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766391115] [2020-10-12 14:02:39,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 14:02:39,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:02:39,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 14:02:39,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-12 14:02:39,695 INFO L87 Difference]: Start difference. First operand 1580 states and 1695 transitions. Second operand 13 states. [2020-10-12 14:02:40,596 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-10-12 14:02:40,782 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-10-12 14:02:41,235 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 86 [2020-10-12 14:02:41,656 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2020-10-12 14:02:42,034 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2020-10-12 14:02:42,305 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 85 [2020-10-12 14:02:42,838 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 100 [2020-10-12 14:02:44,047 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2020-10-12 14:02:44,262 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 65 [2020-10-12 14:02:44,720 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 68 [2020-10-12 14:02:45,071 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 66 [2020-10-12 14:02:45,330 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 69 [2020-10-12 14:02:45,711 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 72 [2020-10-12 14:02:46,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:02:46,251 INFO L93 Difference]: Finished difference Result 2980 states and 3210 transitions. [2020-10-12 14:02:46,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 14:02:46,251 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 602 [2020-10-12 14:02:46,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:02:46,257 INFO L225 Difference]: With dead ends: 2980 [2020-10-12 14:02:46,258 INFO L226 Difference]: Without dead ends: 1523 [2020-10-12 14:02:46,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=246, Invalid=624, Unknown=0, NotChecked=0, Total=870 [2020-10-12 14:02:46,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2020-10-12 14:02:46,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1513. [2020-10-12 14:02:46,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1513 states. [2020-10-12 14:02:46,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 1622 transitions. [2020-10-12 14:02:46,293 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 1622 transitions. Word has length 602 [2020-10-12 14:02:46,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:02:46,294 INFO L479 AbstractCegarLoop]: Abstraction has 1513 states and 1622 transitions. [2020-10-12 14:02:46,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 14:02:46,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 1622 transitions. [2020-10-12 14:02:46,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2020-10-12 14:02:46,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:02:46,302 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:02:46,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 14:02:46,302 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:02:46,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:02:46,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1291775642, now seen corresponding path program 1 times [2020-10-12 14:02:46,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:02:46,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278165511] [2020-10-12 14:02:46,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:02:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:02:46,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:46,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:47,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:47,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:48,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:51,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:02:51,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 656 [2020-10-12 14:02:51,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 14:02:51,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 14:02:51,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:02:51,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 14:02:51,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 433 [2020-10-12 14:02:51,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-12 14:02:51,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:02:51,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:02:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:02:51,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:51,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:02:51,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:02:51,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:02:51,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:02:51,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:02:51,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:02:51,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:02:51,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:02:51,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:02:51,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:02:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:02:51,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:51,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:02:51,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 14:02:51,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:02:51,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 14:02:51,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:02:51,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:02:51,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:02:51,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:02:51,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:02:51,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 14:02:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:02:51,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:51,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:02:51,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:02:51,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:02:51,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 14:02:51,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:02:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:02:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:02:51,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:02:51,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:02:51,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 14:02:51,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:02:51,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:51,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:02:51,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 14:02:51,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:02:51,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 14:02:51,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:02:51,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:02:51,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:02:51,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:02:51,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:02:51,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-12 14:02:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:02:51,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:51,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:02:51,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 14:02:51,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:02:51,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-12 14:02:51,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:02:51,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:02:51,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:02:51,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 14:02:51,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:02:51,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-12 14:02:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:02:51,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:52,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:52,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:02:52,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 14:02:52,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:02:52,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-10-12 14:02:52,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:02:52,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 14:02:52,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:02:52,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-12 14:02:52,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:02:54,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1163 backedges. 595 proven. 2 refuted. 0 times theorem prover too weak. 566 trivial. 0 not checked. [2020-10-12 14:02:54,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278165511] [2020-10-12 14:02:54,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:02:54,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 14:02:54,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287090996] [2020-10-12 14:02:54,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 14:02:54,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:02:54,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 14:02:54,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-12 14:02:54,144 INFO L87 Difference]: Start difference. First operand 1513 states and 1622 transitions. Second operand 13 states. [2020-10-12 14:02:54,928 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-12 14:02:55,120 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-10-12 14:02:55,252 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2020-10-12 14:02:55,388 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-10-12 14:02:55,752 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-10-12 14:02:55,935 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 82 [2020-10-12 14:02:56,147 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2020-10-12 14:02:56,786 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2020-10-12 14:02:57,167 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2020-10-12 14:02:57,327 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 60 [2020-10-12 14:02:57,494 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 63 [2020-10-12 14:02:57,904 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2020-10-12 14:02:58,120 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 68 [2020-10-12 14:02:58,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:02:58,392 INFO L93 Difference]: Finished difference Result 3030 states and 3271 transitions. [2020-10-12 14:02:58,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 14:02:58,396 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 638 [2020-10-12 14:02:58,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:02:58,403 INFO L225 Difference]: With dead ends: 3030 [2020-10-12 14:02:58,403 INFO L226 Difference]: Without dead ends: 1700 [2020-10-12 14:02:58,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=258, Invalid=612, Unknown=0, NotChecked=0, Total=870 [2020-10-12 14:02:58,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2020-10-12 14:02:58,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 1692. [2020-10-12 14:02:58,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1692 states. [2020-10-12 14:02:58,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 1805 transitions. [2020-10-12 14:02:58,437 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 1805 transitions. Word has length 638 [2020-10-12 14:02:58,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:02:58,438 INFO L479 AbstractCegarLoop]: Abstraction has 1692 states and 1805 transitions. [2020-10-12 14:02:58,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 14:02:58,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 1805 transitions. [2020-10-12 14:02:58,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 717 [2020-10-12 14:02:58,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:02:58,445 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:02:58,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 14:02:58,446 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:02:58,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:02:58,446 INFO L82 PathProgramCache]: Analyzing trace with hash 527760662, now seen corresponding path program 1 times [2020-10-12 14:02:58,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:02:58,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221268750] [2020-10-12 14:02:58,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:02:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:02:58,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:02:58,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:00,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:01,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:01,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 734 [2020-10-12 14:03:01,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:03:01,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3311 [2020-10-12 14:03:01,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:01,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 14:03:01,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-12 14:03:01,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-12 14:03:01,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:01,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:03:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:02,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:02,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:02,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:03:02,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:02,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:03:02,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:02,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:02,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:02,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:02,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:02,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:03:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:02,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:02,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:02,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 14:03:02,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:02,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 14:03:02,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:02,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:02,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:02,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:02,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:02,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 14:03:02,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:02,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:02,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:02,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:03:02,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:02,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 14:03:02,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:02,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:02,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:02,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:02,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:02,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 14:03:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:02,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:02,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:02,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 14:03:02,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:02,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 14:03:02,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:02,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:02,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:02,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:02,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:02,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-12 14:03:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:02,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:02,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:02,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 14:03:02,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:02,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 14:03:02,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:02,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:03:02,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:02,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-12 14:03:02,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:02,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-12 14:03:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:02,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:02,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:02,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:02,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 14:03:02,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:03:02,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-12 14:03:02,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:02,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 14:03:02,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:03:02,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-12 14:03:02,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:03,106 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2020-10-12 14:03:03,365 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-10-12 14:03:03,662 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2020-10-12 14:03:03,838 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2020-10-12 14:03:04,018 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2020-10-12 14:03:05,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1334 backedges. 673 proven. 2 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2020-10-12 14:03:05,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221268750] [2020-10-12 14:03:05,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:03:05,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 14:03:05,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714941789] [2020-10-12 14:03:05,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 14:03:05,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:03:05,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 14:03:05,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-12 14:03:05,923 INFO L87 Difference]: Start difference. First operand 1692 states and 1805 transitions. Second operand 13 states. [2020-10-12 14:03:06,643 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-10-12 14:03:07,139 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2020-10-12 14:03:07,507 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2020-10-12 14:03:07,809 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2020-10-12 14:03:08,100 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2020-10-12 14:03:08,517 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 84 [2020-10-12 14:03:08,917 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 95 [2020-10-12 14:03:09,199 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 49 [2020-10-12 14:03:09,976 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2020-10-12 14:03:10,628 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2020-10-12 14:03:10,888 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2020-10-12 14:03:11,121 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2020-10-12 14:03:11,470 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 59 [2020-10-12 14:03:11,810 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 62 [2020-10-12 14:03:12,215 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 78 [2020-10-12 14:03:12,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:03:12,463 INFO L93 Difference]: Finished difference Result 3390 states and 3640 transitions. [2020-10-12 14:03:12,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 14:03:12,469 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 716 [2020-10-12 14:03:12,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:03:12,476 INFO L225 Difference]: With dead ends: 3390 [2020-10-12 14:03:12,476 INFO L226 Difference]: Without dead ends: 1877 [2020-10-12 14:03:12,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=253, Invalid=677, Unknown=0, NotChecked=0, Total=930 [2020-10-12 14:03:12,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1877 states. [2020-10-12 14:03:12,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1877 to 1865. [2020-10-12 14:03:12,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1865 states. [2020-10-12 14:03:12,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 1981 transitions. [2020-10-12 14:03:12,521 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 1981 transitions. Word has length 716 [2020-10-12 14:03:12,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:03:12,521 INFO L479 AbstractCegarLoop]: Abstraction has 1865 states and 1981 transitions. [2020-10-12 14:03:12,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 14:03:12,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 1981 transitions. [2020-10-12 14:03:12,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2020-10-12 14:03:12,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:03:12,531 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:03:12,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 14:03:12,532 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:03:12,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:03:12,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1629807674, now seen corresponding path program 1 times [2020-10-12 14:03:12,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:03:12,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5238075] [2020-10-12 14:03:12,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:03:12,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:12,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:12,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:13,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:16,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:16,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 835 [2020-10-12 14:03:16,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:03:16,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3666 [2020-10-12 14:03:16,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:16,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 14:03:16,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-12 14:03:16,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-12 14:03:16,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:16,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:03:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:16,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:16,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:16,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:03:16,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:16,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:03:16,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:16,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:16,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:16,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:16,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:16,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:03:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:16,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:16,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:16,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 14:03:16,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:16,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 14:03:16,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:16,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:16,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:16,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:16,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:16,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 14:03:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:16,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:16,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:16,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:03:16,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:16,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 14:03:16,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:16,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:16,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:16,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:16,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:16,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 14:03:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:16,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:16,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:16,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 14:03:16,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:16,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 14:03:16,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:16,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:16,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:16,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:16,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:16,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-12 14:03:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:16,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:16,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:16,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 14:03:16,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:16,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 14:03:16,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:16,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:16,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:16,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:16,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:16,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-12 14:03:16,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:16,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:16,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:16,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-12 14:03:16,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:16,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-12 14:03:16,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:16,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:03:16,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:16,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-12 14:03:16,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:16,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-12 14:03:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:16,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:16,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:17,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:17,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 14:03:17,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:03:17,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-10-12 14:03:17,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:17,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 14:03:17,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:03:17,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-12 14:03:17,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:17,676 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2020-10-12 14:03:17,849 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2020-10-12 14:03:18,036 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2020-10-12 14:03:18,225 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2020-10-12 14:03:18,427 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-10-12 14:03:20,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1792 backedges. 809 proven. 2 refuted. 0 times theorem prover too weak. 981 trivial. 0 not checked. [2020-10-12 14:03:20,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5238075] [2020-10-12 14:03:20,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:03:20,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 14:03:20,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480177011] [2020-10-12 14:03:20,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 14:03:20,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:03:20,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 14:03:20,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-12 14:03:20,360 INFO L87 Difference]: Start difference. First operand 1865 states and 1981 transitions. Second operand 13 states. [2020-10-12 14:03:20,859 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-12 14:03:21,059 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2020-10-12 14:03:21,302 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-10-12 14:03:21,484 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-10-12 14:03:21,780 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2020-10-12 14:03:22,068 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-10-12 14:03:22,406 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 84 [2020-10-12 14:03:23,235 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 53 [2020-10-12 14:03:23,462 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2020-10-12 14:03:23,722 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2020-10-12 14:03:23,916 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2020-10-12 14:03:24,295 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2020-10-12 14:03:24,624 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 67 [2020-10-12 14:03:25,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:03:25,036 INFO L93 Difference]: Finished difference Result 3732 states and 3986 transitions. [2020-10-12 14:03:25,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 14:03:25,040 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 815 [2020-10-12 14:03:25,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:03:25,047 INFO L225 Difference]: With dead ends: 3732 [2020-10-12 14:03:25,047 INFO L226 Difference]: Without dead ends: 1949 [2020-10-12 14:03:25,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=252, Invalid=618, Unknown=0, NotChecked=0, Total=870 [2020-10-12 14:03:25,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1949 states. [2020-10-12 14:03:25,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1949 to 1939. [2020-10-12 14:03:25,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1939 states. [2020-10-12 14:03:25,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1939 states to 1939 states and 2056 transitions. [2020-10-12 14:03:25,086 INFO L78 Accepts]: Start accepts. Automaton has 1939 states and 2056 transitions. Word has length 815 [2020-10-12 14:03:25,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:03:25,087 INFO L479 AbstractCegarLoop]: Abstraction has 1939 states and 2056 transitions. [2020-10-12 14:03:25,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 14:03:25,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1939 states and 2056 transitions. [2020-10-12 14:03:25,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 890 [2020-10-12 14:03:25,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:03:25,098 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 14:03:25,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 14:03:25,098 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:03:25,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:03:25,099 INFO L82 PathProgramCache]: Analyzing trace with hash -85629310, now seen corresponding path program 1 times [2020-10-12 14:03:25,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:03:25,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934986617] [2020-10-12 14:03:25,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:03:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:25,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:25,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:27,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:30,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:30,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 909 [2020-10-12 14:03:30,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:03:30,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-12 14:03:30,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:30,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 14:03:30,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 686 [2020-10-12 14:03:30,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-12 14:03:30,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:30,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:03:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:30,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:30,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:30,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:03:30,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:30,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:03:30,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:30,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:30,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:30,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:30,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:30,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:03:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:30,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:30,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:30,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 14:03:30,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:30,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 14:03:30,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:30,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:30,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:30,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:30,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:30,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 14:03:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:30,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:30,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:30,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:03:30,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:30,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 14:03:30,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:30,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:30,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:30,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:30,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:30,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 14:03:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:30,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:30,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:30,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 14:03:30,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:30,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 14:03:30,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:30,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:30,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:30,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:30,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:30,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-12 14:03:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:30,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:30,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:30,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 14:03:30,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:30,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 14:03:30,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:30,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:30,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:30,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:30,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:30,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-12 14:03:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:30,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:30,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:30,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-12 14:03:30,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:30,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-12 14:03:30,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:30,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:03:30,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:30,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-12 14:03:30,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:30,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-12 14:03:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:30,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:30,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:31,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:31,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 14:03:31,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:03:31,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446 [2020-10-12 14:03:31,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:31,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 14:03:31,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:03:31,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-12 14:03:31,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:31,726 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2020-10-12 14:03:31,918 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2020-10-12 14:03:32,132 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2020-10-12 14:03:32,356 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2020-10-12 14:03:32,595 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2020-10-12 14:03:34,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2037 backedges. 883 proven. 2 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2020-10-12 14:03:34,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934986617] [2020-10-12 14:03:34,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:03:34,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 14:03:34,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889511883] [2020-10-12 14:03:34,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 14:03:34,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:03:34,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 14:03:34,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-12 14:03:34,216 INFO L87 Difference]: Start difference. First operand 1939 states and 2056 transitions. Second operand 13 states. [2020-10-12 14:03:35,487 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2020-10-12 14:03:35,676 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2020-10-12 14:03:35,889 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-10-12 14:03:36,127 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2020-10-12 14:03:36,363 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2020-10-12 14:03:36,680 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 86 [2020-10-12 14:03:36,960 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2020-10-12 14:03:38,148 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 53 [2020-10-12 14:03:38,321 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2020-10-12 14:03:38,535 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2020-10-12 14:03:38,771 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2020-10-12 14:03:39,013 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2020-10-12 14:03:39,333 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 72 [2020-10-12 14:03:39,628 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2020-10-12 14:03:39,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:03:39,879 INFO L93 Difference]: Finished difference Result 3882 states and 4138 transitions. [2020-10-12 14:03:39,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 14:03:39,879 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 889 [2020-10-12 14:03:39,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:03:39,887 INFO L225 Difference]: With dead ends: 3882 [2020-10-12 14:03:39,887 INFO L226 Difference]: Without dead ends: 2111 [2020-10-12 14:03:39,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=256, Invalid=614, Unknown=0, NotChecked=0, Total=870 [2020-10-12 14:03:39,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2111 states. [2020-10-12 14:03:39,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2111 to 2099. [2020-10-12 14:03:39,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2099 states. [2020-10-12 14:03:39,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2099 states to 2099 states and 2217 transitions. [2020-10-12 14:03:39,928 INFO L78 Accepts]: Start accepts. Automaton has 2099 states and 2217 transitions. Word has length 889 [2020-10-12 14:03:39,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:03:39,929 INFO L479 AbstractCegarLoop]: Abstraction has 2099 states and 2217 transitions. [2020-10-12 14:03:39,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 14:03:39,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states and 2217 transitions. [2020-10-12 14:03:39,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 892 [2020-10-12 14:03:39,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:03:39,940 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:03:39,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 14:03:39,941 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:03:39,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:03:39,941 INFO L82 PathProgramCache]: Analyzing trace with hash 101789775, now seen corresponding path program 1 times [2020-10-12 14:03:39,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:03:39,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522526667] [2020-10-12 14:03:39,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:03:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:40,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:40,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:40,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 913 [2020-10-12 14:03:40,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:40,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 831 [2020-10-12 14:03:40,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:40,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:03:40,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 871 [2020-10-12 14:03:40,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 14:03:40,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:41,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:03:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:41,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:41,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:41,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:03:41,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:41,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:03:41,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:41,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:41,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:41,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:41,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:41,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:03:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:41,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:41,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:41,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 14:03:41,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:41,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 14:03:41,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:41,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:41,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:41,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:41,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:41,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 14:03:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:41,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:41,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:41,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:03:41,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:41,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 14:03:41,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:41,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:41,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:41,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:41,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:41,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 14:03:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:41,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:41,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:41,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 14:03:41,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:41,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 14:03:41,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:41,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:41,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:41,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:41,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:41,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-12 14:03:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:41,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:41,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:41,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 14:03:41,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:41,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 14:03:41,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:41,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:41,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:41,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:41,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:41,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-12 14:03:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:41,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:41,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:41,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-12 14:03:41,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:41,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 14:03:41,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:41,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:41,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:41,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:41,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:41,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-12 14:03:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:41,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:41,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:41,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 14:03:41,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:41,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 14:03:41,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:41,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:41,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:41,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:41,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:41,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-12 14:03:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:41,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:41,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:41,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 14:03:41,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:41,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 14:03:41,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:41,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:03:41,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:41,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-12 14:03:41,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:41,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2283 backedges. 256 proven. 7 refuted. 0 times theorem prover too weak. 2020 trivial. 0 not checked. [2020-10-12 14:03:41,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522526667] [2020-10-12 14:03:41,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:03:41,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:03:41,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819789884] [2020-10-12 14:03:41,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:03:41,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:03:41,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:03:41,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:03:41,740 INFO L87 Difference]: Start difference. First operand 2099 states and 2217 transitions. Second operand 5 states. [2020-10-12 14:03:42,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:03:42,862 INFO L93 Difference]: Finished difference Result 4570 states and 4918 transitions. [2020-10-12 14:03:42,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:03:42,863 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 891 [2020-10-12 14:03:42,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:03:42,873 INFO L225 Difference]: With dead ends: 4570 [2020-10-12 14:03:42,873 INFO L226 Difference]: Without dead ends: 2661 [2020-10-12 14:03:42,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:03:42,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2661 states. [2020-10-12 14:03:42,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2661 to 2655. [2020-10-12 14:03:42,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2655 states. [2020-10-12 14:03:42,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2655 states to 2655 states and 2848 transitions. [2020-10-12 14:03:42,925 INFO L78 Accepts]: Start accepts. Automaton has 2655 states and 2848 transitions. Word has length 891 [2020-10-12 14:03:42,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:03:42,926 INFO L479 AbstractCegarLoop]: Abstraction has 2655 states and 2848 transitions. [2020-10-12 14:03:42,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:03:42,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2655 states and 2848 transitions. [2020-10-12 14:03:42,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2020-10-12 14:03:42,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:03:42,939 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:03:42,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 14:03:42,939 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:03:42,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:03:42,940 INFO L82 PathProgramCache]: Analyzing trace with hash 658375178, now seen corresponding path program 1 times [2020-10-12 14:03:42,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:03:42,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862142991] [2020-10-12 14:03:42,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:03:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:43,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:43,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:44,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:46,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:46,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 989 [2020-10-12 14:03:46,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:03:46,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3887 [2020-10-12 14:03:46,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:46,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:03:46,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 871 [2020-10-12 14:03:46,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 14:03:46,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:47,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:03:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:47,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:47,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:47,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:03:47,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:47,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:03:47,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:47,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:47,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:47,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:47,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:47,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:03:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:47,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:47,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:47,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 14:03:47,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:47,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 14:03:47,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:47,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:47,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:47,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:47,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:47,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 14:03:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:47,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:47,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:47,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:03:47,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:47,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 14:03:47,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:47,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:47,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:47,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:47,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:47,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 14:03:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:47,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:47,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:47,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 14:03:47,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:47,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 14:03:47,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:47,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:47,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:47,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:47,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:47,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-12 14:03:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:47,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:47,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:47,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 14:03:47,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:47,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 14:03:47,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:47,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:47,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:47,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:47,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:47,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-12 14:03:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:47,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:47,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:47,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-12 14:03:47,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:47,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 14:03:47,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:47,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:47,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:47,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:47,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:47,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-12 14:03:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:47,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:47,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:47,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 14:03:47,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:47,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 14:03:47,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:47,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:47,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:47,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:47,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:47,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-12 14:03:47,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:47,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:47,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:47,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 14:03:47,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:47,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-12 14:03:47,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:47,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:03:47,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:47,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-12 14:03:47,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:47,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-12 14:03:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:47,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:47,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:47,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 14:03:47,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:47,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 14:03:47,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:47,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:03:47,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:03:47,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 14:03:47,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:48,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2836 backedges. 807 proven. 2 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2020-10-12 14:03:48,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862142991] [2020-10-12 14:03:48,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:03:48,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:03:48,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131251005] [2020-10-12 14:03:48,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:03:48,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:03:48,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:03:48,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:03:48,004 INFO L87 Difference]: Start difference. First operand 2655 states and 2848 transitions. Second operand 7 states. [2020-10-12 14:03:49,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:03:49,550 INFO L93 Difference]: Finished difference Result 5684 states and 6209 transitions. [2020-10-12 14:03:49,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 14:03:49,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 965 [2020-10-12 14:03:49,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:03:49,563 INFO L225 Difference]: With dead ends: 5684 [2020-10-12 14:03:49,563 INFO L226 Difference]: Without dead ends: 3219 [2020-10-12 14:03:49,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 14:03:49,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2020-10-12 14:03:49,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3213. [2020-10-12 14:03:49,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3213 states. [2020-10-12 14:03:49,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3213 states to 3213 states and 3455 transitions. [2020-10-12 14:03:49,626 INFO L78 Accepts]: Start accepts. Automaton has 3213 states and 3455 transitions. Word has length 965 [2020-10-12 14:03:49,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:03:49,627 INFO L479 AbstractCegarLoop]: Abstraction has 3213 states and 3455 transitions. [2020-10-12 14:03:49,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:03:49,627 INFO L276 IsEmpty]: Start isEmpty. Operand 3213 states and 3455 transitions. [2020-10-12 14:03:49,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 978 [2020-10-12 14:03:49,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:03:49,641 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:03:49,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 14:03:49,642 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:03:49,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:03:49,643 INFO L82 PathProgramCache]: Analyzing trace with hash 607142706, now seen corresponding path program 1 times [2020-10-12 14:03:49,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:03:49,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683161923] [2020-10-12 14:03:49,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:03:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:49,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:50,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:54,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:54,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1001 [2020-10-12 14:03:54,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:03:54,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4694 [2020-10-12 14:03:54,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:54,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 14:03:54,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-12 14:03:54,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-12 14:03:54,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:54,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:03:54,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:54,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:54,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:54,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:03:54,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:54,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:03:54,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:54,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:54,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:54,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:54,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:54,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:03:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:54,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:54,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:54,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 14:03:54,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:54,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 14:03:54,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:54,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:54,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:54,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:54,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:54,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 14:03:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:54,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:54,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:54,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:03:54,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:54,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 14:03:54,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:54,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:54,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:54,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:54,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:54,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 14:03:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:54,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:54,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:54,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 14:03:54,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:54,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 14:03:54,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:54,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:54,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:54,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:54,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:54,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-12 14:03:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:54,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:54,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:54,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 14:03:54,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:54,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 14:03:54,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:54,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:54,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:54,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:54,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:54,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-12 14:03:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:54,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:54,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:54,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-12 14:03:54,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:54,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 14:03:54,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:54,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:03:54,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:54,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:03:54,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:54,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-12 14:03:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:54,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:54,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:54,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 14:03:54,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:54,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 14:03:54,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:54,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:03:54,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:03:54,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 14:03:54,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:54,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-12 14:03:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:54,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:55,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:55,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 14:03:55,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:55,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-12 14:03:55,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:55,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:03:55,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:03:55,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-12 14:03:55,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:55,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-12 14:03:55,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:55,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:55,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:03:55,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 14:03:55,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:03:55,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 14:03:55,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:03:55,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:03:55,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:03:55,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 14:03:55,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:03:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2905 backedges. 1533 proven. 6 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-12 14:03:55,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683161923] [2020-10-12 14:03:55,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:03:55,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 14:03:55,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464303379] [2020-10-12 14:03:55,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 14:03:55,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:03:55,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 14:03:55,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:03:55,855 INFO L87 Difference]: Start difference. First operand 3213 states and 3455 transitions. Second operand 10 states. [2020-10-12 14:03:58,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:03:58,325 INFO L93 Difference]: Finished difference Result 7558 states and 8338 transitions. [2020-10-12 14:03:58,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 14:03:58,326 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 977 [2020-10-12 14:03:58,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:03:58,338 INFO L225 Difference]: With dead ends: 7558 [2020-10-12 14:03:58,338 INFO L226 Difference]: Without dead ends: 4535 [2020-10-12 14:03:58,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-10-12 14:03:58,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4535 states. [2020-10-12 14:03:58,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4535 to 4521. [2020-10-12 14:03:58,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4521 states. [2020-10-12 14:03:58,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4521 states to 4521 states and 4989 transitions. [2020-10-12 14:03:58,412 INFO L78 Accepts]: Start accepts. Automaton has 4521 states and 4989 transitions. Word has length 977 [2020-10-12 14:03:58,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:03:58,413 INFO L479 AbstractCegarLoop]: Abstraction has 4521 states and 4989 transitions. [2020-10-12 14:03:58,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 14:03:58,413 INFO L276 IsEmpty]: Start isEmpty. Operand 4521 states and 4989 transitions. [2020-10-12 14:03:58,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1105 [2020-10-12 14:03:58,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:03:58,429 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:03:58,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 14:03:58,429 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:03:58,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:03:58,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1076863110, now seen corresponding path program 1 times [2020-10-12 14:03:58,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:03:58,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512683398] [2020-10-12 14:03:58,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:03:58,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:03:58,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:58,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:03:59,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:02,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:03,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:03,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1130 [2020-10-12 14:04:03,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:04:03,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-12 14:04:03,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:03,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 14:04:03,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-12 14:04:03,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 399 [2020-10-12 14:04:03,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:03,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:04:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:03,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:03,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:03,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:04:03,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:03,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:04:03,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:03,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:04:03,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:03,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:04:03,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:03,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:04:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:03,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:03,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:03,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 14:04:03,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:03,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 14:04:03,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:03,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:04:03,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:03,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:04:03,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:03,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 14:04:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:03,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:03,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:03,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:04:03,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:03,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 14:04:03,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:03,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:04:03,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:03,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:04:03,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:03,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 14:04:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:03,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:03,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:03,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 14:04:03,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:03,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 14:04:03,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:03,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:04:03,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:03,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:04:03,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:03,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-12 14:04:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:03,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:03,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:03,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 14:04:03,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:03,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 14:04:03,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:03,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:04:03,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:03,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:04:03,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:03,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-12 14:04:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:03,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:03,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:03,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-12 14:04:03,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:03,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 14:04:03,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:03,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:04:03,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:03,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:04:03,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:03,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-12 14:04:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:03,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:03,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:03,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 14:04:03,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:03,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 14:04:03,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:03,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:04:03,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:03,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 14:04:03,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:03,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-12 14:04:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:04,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:04,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:04,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 14:04:04,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:04,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-12 14:04:04,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:04,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:04:04,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:04:04,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-12 14:04:04,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:04,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-12 14:04:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:04,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:04,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:04,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 14:04:04,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:04,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-12 14:04:04,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:04,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:04:04,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:04:04,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-12 14:04:04,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:04,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-12 14:04:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:04,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:04,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:04,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 14:04:04,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:04,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 14:04:04,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:04,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:04:04,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:04:04,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 14:04:04,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:05,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3809 backedges. 2243 proven. 188 refuted. 0 times theorem prover too weak. 1378 trivial. 0 not checked. [2020-10-12 14:04:05,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512683398] [2020-10-12 14:04:05,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:04:05,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 14:04:05,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166775532] [2020-10-12 14:04:05,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 14:04:05,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:04:05,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 14:04:05,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-12 14:04:05,879 INFO L87 Difference]: Start difference. First operand 4521 states and 4989 transitions. Second operand 11 states. [2020-10-12 14:04:08,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:04:08,855 INFO L93 Difference]: Finished difference Result 8862 states and 9808 transitions. [2020-10-12 14:04:08,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 14:04:08,857 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1104 [2020-10-12 14:04:08,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:04:08,869 INFO L225 Difference]: With dead ends: 8862 [2020-10-12 14:04:08,869 INFO L226 Difference]: Without dead ends: 4531 [2020-10-12 14:04:08,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2020-10-12 14:04:08,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4531 states. [2020-10-12 14:04:08,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4531 to 4523. [2020-10-12 14:04:08,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4523 states. [2020-10-12 14:04:08,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4523 states to 4523 states and 4990 transitions. [2020-10-12 14:04:08,944 INFO L78 Accepts]: Start accepts. Automaton has 4523 states and 4990 transitions. Word has length 1104 [2020-10-12 14:04:08,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:04:08,945 INFO L479 AbstractCegarLoop]: Abstraction has 4523 states and 4990 transitions. [2020-10-12 14:04:08,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 14:04:08,945 INFO L276 IsEmpty]: Start isEmpty. Operand 4523 states and 4990 transitions. [2020-10-12 14:04:08,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1138 [2020-10-12 14:04:08,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:04:08,962 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-12 14:04:08,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 14:04:08,963 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:04:08,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:04:08,963 INFO L82 PathProgramCache]: Analyzing trace with hash 650595002, now seen corresponding path program 1 times [2020-10-12 14:04:08,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:04:08,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541320101] [2020-10-12 14:04:08,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:04:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:09,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:09,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:10,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:14,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:14,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1161 [2020-10-12 14:04:14,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:04:14,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 14:04:14,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:14,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 14:04:14,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-12 14:04:14,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-12 14:04:14,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:14,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:04:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:14,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:14,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:14,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:04:14,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:14,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:04:14,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:14,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:04:14,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:14,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:04:14,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:04:14,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:04:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:14,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:14,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:14,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 14:04:14,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:14,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 14:04:14,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:14,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:04:14,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:14,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:04:14,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:14,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 14:04:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:14,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:14,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:14,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:04:14,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:14,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 14:04:14,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:14,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:04:14,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:14,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:04:14,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:04:14,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 14:04:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:14,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:14,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:14,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 14:04:14,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:14,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 14:04:14,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:14,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:04:14,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:14,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:04:14,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:04:14,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-12 14:04:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:14,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:14,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:14,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 14:04:14,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:14,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 14:04:14,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:14,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:04:14,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:14,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:04:14,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:14,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-12 14:04:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:14,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:14,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:14,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-12 14:04:14,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:14,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 14:04:14,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:14,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:04:14,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:14,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:04:14,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:14,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-12 14:04:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:14,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:14,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:14,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-12 14:04:14,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:14,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-12 14:04:14,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:14,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:04:14,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:14,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-12 14:04:14,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:15,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-12 14:04:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:15,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:15,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:15,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:15,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 14:04:15,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:04:15,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-10-12 14:04:15,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:15,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 14:04:15,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:04:15,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-12 14:04:15,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:16,052 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-10-12 14:04:16,226 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2020-10-12 14:04:16,407 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2020-10-12 14:04:16,600 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2020-10-12 14:04:16,795 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-12 14:04:17,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1017 [2020-10-12 14:04:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:17,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:17,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:17,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 14:04:17,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:17,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 14:04:17,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:17,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:04:17,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-12 14:04:17,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:04:17,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:20,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3528 backedges. 1141 proven. 85 refuted. 0 times theorem prover too weak. 2302 trivial. 0 not checked. [2020-10-12 14:04:20,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541320101] [2020-10-12 14:04:20,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:04:20,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 14:04:20,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723025756] [2020-10-12 14:04:20,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 14:04:20,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:04:20,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 14:04:20,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-12 14:04:20,222 INFO L87 Difference]: Start difference. First operand 4523 states and 4990 transitions. Second operand 13 states. [2020-10-12 14:04:20,926 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2020-10-12 14:04:21,194 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2020-10-12 14:04:21,575 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-10-12 14:04:21,861 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 76 [2020-10-12 14:04:22,202 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2020-10-12 14:04:22,590 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2020-10-12 14:04:22,938 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 94 [2020-10-12 14:04:23,335 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 51 [2020-10-12 14:04:24,070 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2020-10-12 14:04:24,320 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2020-10-12 14:04:24,712 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 55 [2020-10-12 14:04:25,105 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 59 [2020-10-12 14:04:25,474 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 63 [2020-10-12 14:04:25,781 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 66 [2020-10-12 14:04:26,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:04:26,205 INFO L93 Difference]: Finished difference Result 9044 states and 9998 transitions. [2020-10-12 14:04:26,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 14:04:26,205 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1137 [2020-10-12 14:04:26,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:04:26,215 INFO L225 Difference]: With dead ends: 9044 [2020-10-12 14:04:26,216 INFO L226 Difference]: Without dead ends: 4110 [2020-10-12 14:04:26,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=262, Invalid=668, Unknown=0, NotChecked=0, Total=930 [2020-10-12 14:04:26,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4110 states. [2020-10-12 14:04:26,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4110 to 4108. [2020-10-12 14:04:26,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4108 states. [2020-10-12 14:04:26,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4108 states to 4108 states and 4542 transitions. [2020-10-12 14:04:26,286 INFO L78 Accepts]: Start accepts. Automaton has 4108 states and 4542 transitions. Word has length 1137 [2020-10-12 14:04:26,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:04:26,287 INFO L479 AbstractCegarLoop]: Abstraction has 4108 states and 4542 transitions. [2020-10-12 14:04:26,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 14:04:26,287 INFO L276 IsEmpty]: Start isEmpty. Operand 4108 states and 4542 transitions. [2020-10-12 14:04:26,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1236 [2020-10-12 14:04:26,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:04:26,304 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:04:26,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 14:04:26,305 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:04:26,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:04:26,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1650465772, now seen corresponding path program 1 times [2020-10-12 14:04:26,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:04:26,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877352869] [2020-10-12 14:04:26,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:04:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:26,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:27,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:30,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:30,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1263 [2020-10-12 14:04:30,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:04:30,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3894 [2020-10-12 14:04:30,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:30,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:04:30,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1221 [2020-10-12 14:04:30,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 14:04:30,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:04:30,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:04:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:30,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:30,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:30,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:04:30,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:30,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:04:30,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:30,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:04:30,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:30,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:04:30,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:04:30,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:04:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:30,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:30,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:30,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 14:04:30,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:30,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 14:04:30,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:30,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:04:30,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:30,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:04:30,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:04:30,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 14:04:30,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:30,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:30,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:30,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:04:30,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:30,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 14:04:30,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:30,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:04:30,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:30,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:04:30,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:04:30,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 14:04:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:30,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:30,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:30,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 14:04:30,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:30,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 14:04:30,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:30,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:04:30,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:30,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:04:30,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:30,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-12 14:04:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:30,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:30,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:30,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 14:04:30,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:30,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 14:04:30,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:30,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:04:30,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:30,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:04:30,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:30,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-12 14:04:30,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:30,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:31,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:31,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-12 14:04:31,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:31,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-12 14:04:31,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:31,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:04:31,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:31,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:04:31,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:31,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-12 14:04:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:31,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:31,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:31,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 14:04:31,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:31,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 14:04:31,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:31,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:04:31,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:31,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:04:31,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:31,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-12 14:04:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:31,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:31,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:31,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 14:04:31,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:31,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 14:04:31,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:31,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:04:31,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:31,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:04:31,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:31,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-12 14:04:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:31,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:31,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:31,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 14:04:31,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:31,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 14:04:31,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:31,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:04:31,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:31,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:04:31,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:31,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-12 14:04:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:31,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:31,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:31,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-12 14:04:31,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:31,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 14:04:31,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:31,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:04:31,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:31,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:04:31,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:31,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-12 14:04:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:31,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:31,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:31,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 14:04:31,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:31,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 14:04:31,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:31,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:04:31,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:31,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 14:04:31,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:31,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4767 backedges. 367 proven. 10 refuted. 0 times theorem prover too weak. 4390 trivial. 0 not checked. [2020-10-12 14:04:31,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877352869] [2020-10-12 14:04:31,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:04:31,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:04:31,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429550341] [2020-10-12 14:04:31,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:04:31,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:04:31,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:04:31,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:04:31,913 INFO L87 Difference]: Start difference. First operand 4108 states and 4542 transitions. Second operand 6 states. [2020-10-12 14:04:33,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:04:33,736 INFO L93 Difference]: Finished difference Result 8760 states and 9891 transitions. [2020-10-12 14:04:33,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:04:33,739 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1235 [2020-10-12 14:04:33,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:04:33,751 INFO L225 Difference]: With dead ends: 8760 [2020-10-12 14:04:33,752 INFO L226 Difference]: Without dead ends: 4842 [2020-10-12 14:04:33,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:04:33,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4842 states. [2020-10-12 14:04:33,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4842 to 4838. [2020-10-12 14:04:33,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4838 states. [2020-10-12 14:04:33,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4838 states to 4838 states and 5376 transitions. [2020-10-12 14:04:33,833 INFO L78 Accepts]: Start accepts. Automaton has 4838 states and 5376 transitions. Word has length 1235 [2020-10-12 14:04:33,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:04:33,834 INFO L479 AbstractCegarLoop]: Abstraction has 4838 states and 5376 transitions. [2020-10-12 14:04:33,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:04:33,835 INFO L276 IsEmpty]: Start isEmpty. Operand 4838 states and 5376 transitions. [2020-10-12 14:04:33,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1348 [2020-10-12 14:04:33,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:04:33,856 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 14:04:33,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 14:04:33,857 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:04:33,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:04:33,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1086973305, now seen corresponding path program 1 times [2020-10-12 14:04:33,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:04:33,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577618699] [2020-10-12 14:04:33,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:04:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:34,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:34,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:37,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:39,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:39,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1377 [2020-10-12 14:04:39,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:04:39,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5114 [2020-10-12 14:04:39,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:39,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:04:39,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1133 [2020-10-12 14:04:39,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-12 14:04:39,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:04:39,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:04:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:39,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:39,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:39,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:04:39,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:39,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:04:39,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:39,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:04:39,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:39,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:04:39,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:39,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:04:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:39,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:39,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:39,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 14:04:39,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:39,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 14:04:39,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:39,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:04:39,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:39,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:04:39,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:39,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 14:04:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:39,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:39,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:39,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:04:39,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:39,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 14:04:39,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:39,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:04:39,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:39,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:04:39,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:39,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-12 14:04:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:39,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:39,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:39,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 14:04:39,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:39,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 14:04:39,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:39,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:04:39,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:39,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:04:39,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:39,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-12 14:04:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:39,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:39,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:39,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 14:04:39,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:39,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 14:04:39,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:39,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:04:39,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:39,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:04:39,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:39,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-12 14:04:39,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:39,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:39,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:39,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-12 14:04:39,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:39,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 14:04:39,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:39,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:04:39,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:39,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:04:39,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:39,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-12 14:04:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:39,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:39,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:39,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 14:04:39,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:39,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 14:04:39,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:39,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:04:39,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:39,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:04:39,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:39,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-12 14:04:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:39,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:39,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:39,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 14:04:39,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:39,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 14:04:39,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:39,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:04:39,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:39,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:04:39,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:39,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-12 14:04:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:39,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:39,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:39,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 14:04:39,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:39,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 14:04:39,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:39,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:04:39,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:39,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:04:39,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:40,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-12 14:04:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:40,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:40,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:40,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-12 14:04:40,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:40,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 14:04:40,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:40,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:04:40,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:04:40,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-12 14:04:40,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:40,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-12 14:04:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:40,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:40,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:40,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:40,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 14:04:40,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:04:40,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-12 14:04:40,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:40,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:04:40,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:04:40,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 14:04:40,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:40,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1194 [2020-10-12 14:04:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:40,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:40,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:04:40,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 14:04:40,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:04:40,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-12 14:04:40,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:04:40,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:04:40,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:04:40,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-12 14:04:40,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:04:41,031 INFO L134 CoverageAnalysis]: Checked inductivity of 5798 backedges. 2063 proven. 78 refuted. 0 times theorem prover too weak. 3657 trivial. 0 not checked. [2020-10-12 14:04:41,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577618699] [2020-10-12 14:04:41,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:04:41,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:04:41,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294665727] [2020-10-12 14:04:41,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:04:41,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:04:41,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:04:41,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:04:41,034 INFO L87 Difference]: Start difference. First operand 4838 states and 5376 transitions. Second operand 8 states. [2020-10-12 14:04:42,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:04:42,508 INFO L93 Difference]: Finished difference Result 10312 states and 11547 transitions. [2020-10-12 14:04:42,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 14:04:42,510 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1347 [2020-10-12 14:04:42,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:04:42,527 INFO L225 Difference]: With dead ends: 10312 [2020-10-12 14:04:42,527 INFO L226 Difference]: Without dead ends: 5664 [2020-10-12 14:04:42,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 14:04:42,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5664 states. [2020-10-12 14:04:42,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5664 to 5477. [2020-10-12 14:04:42,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5477 states. [2020-10-12 14:04:42,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5477 states to 5477 states and 6092 transitions. [2020-10-12 14:04:42,634 INFO L78 Accepts]: Start accepts. Automaton has 5477 states and 6092 transitions. Word has length 1347 [2020-10-12 14:04:42,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:04:42,635 INFO L479 AbstractCegarLoop]: Abstraction has 5477 states and 6092 transitions. [2020-10-12 14:04:42,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:04:42,636 INFO L276 IsEmpty]: Start isEmpty. Operand 5477 states and 6092 transitions. [2020-10-12 14:04:42,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1498 [2020-10-12 14:04:42,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:04:42,667 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 7, 7, 7, 7, 7, 7, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 14:04:42,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 14:04:42,668 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:04:42,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:04:42,668 INFO L82 PathProgramCache]: Analyzing trace with hash 438407836, now seen corresponding path program 1 times [2020-10-12 14:04:42,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:04:42,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408295317] [2020-10-12 14:04:42,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:04:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:04:43,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:43,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:45,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:04:47,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking...