/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:23:41,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:23:41,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:23:41,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:23:41,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:23:41,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:23:41,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:23:41,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:23:41,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:23:41,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:23:41,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:23:41,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:23:41,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:23:41,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:23:41,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:23:41,635 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:23:41,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:23:41,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:23:41,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:23:41,647 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:23:41,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:23:41,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:23:41,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:23:41,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:23:41,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:23:41,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:23:41,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:23:41,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:23:41,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:23:41,672 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:23:41,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:23:41,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:23:41,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:23:41,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:23:41,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:23:41,681 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:23:41,682 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:23:41,682 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:23:41,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:23:41,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:23:41,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:23:41,685 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 09:23:41,722 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:23:41,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:23:41,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:23:41,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:23:41,728 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:23:41,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:23:41,729 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:23:41,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:23:41,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:23:41,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:23:41,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:23:41,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:23:41,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:23:41,732 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:23:41,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:23:41,733 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:23:41,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:23:41,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:23:41,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:23:41,734 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:23:41,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:23:41,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:23:41,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:23:41,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:23:41,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:23:41,735 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:23:41,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:23:41,736 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:23:41,736 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:23:41,736 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:23:42,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:23:42,073 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:23:42,077 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:23:42,079 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:23:42,079 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:23:42,080 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label46.c [2020-10-13 09:23:42,144 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ad2b9468/3a4a9b52239845538e98c3b29b662a94/FLAGc18209a60 [2020-10-13 09:23:42,848 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:23:42,849 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label46.c [2020-10-13 09:23:42,867 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ad2b9468/3a4a9b52239845538e98c3b29b662a94/FLAGc18209a60 [2020-10-13 09:23:42,955 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ad2b9468/3a4a9b52239845538e98c3b29b662a94 [2020-10-13 09:23:42,966 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:23:42,967 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:23:42,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:23:42,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:23:42,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:23:42,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:23:42" (1/1) ... [2020-10-13 09:23:42,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11cafb76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:42, skipping insertion in model container [2020-10-13 09:23:42,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:23:42" (1/1) ... [2020-10-13 09:23:42,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:23:43,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:23:43,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:23:43,930 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:23:44,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:23:44,500 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:23:44,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:44 WrapperNode [2020-10-13 09:23:44,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:23:44,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:23:44,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:23:44,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:23:44,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:44" (1/1) ... [2020-10-13 09:23:44,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:44" (1/1) ... [2020-10-13 09:23:44,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:44" (1/1) ... [2020-10-13 09:23:44,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:44" (1/1) ... [2020-10-13 09:23:44,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:44" (1/1) ... [2020-10-13 09:23:44,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:44" (1/1) ... [2020-10-13 09:23:44,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:44" (1/1) ... [2020-10-13 09:23:44,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:23:44,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:23:44,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:23:44,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:23:44,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:23:44,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:23:44,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:23:44,805 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:23:44,805 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:23:44,806 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:23:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:23:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:23:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:23:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:23:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:23:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:23:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:23:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:23:49,254 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:23:49,254 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:23:49,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:23:49 BoogieIcfgContainer [2020-10-13 09:23:49,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:23:49,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:23:49,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:23:49,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:23:49,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:23:42" (1/3) ... [2020-10-13 09:23:49,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a635b36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:23:49, skipping insertion in model container [2020-10-13 09:23:49,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:23:44" (2/3) ... [2020-10-13 09:23:49,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a635b36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:23:49, skipping insertion in model container [2020-10-13 09:23:49,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:23:49" (3/3) ... [2020-10-13 09:23:49,271 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label46.c [2020-10-13 09:23:49,282 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:23:49,290 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:23:49,306 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:23:49,334 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:23:49,334 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:23:49,334 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:23:49,334 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:23:49,335 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:23:49,335 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:23:49,335 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:23:49,335 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:23:49,363 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2020-10-13 09:23:49,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-13 09:23:49,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:23:49,371 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] [2020-10-13 09:23:49,372 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:23:49,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:23:49,379 INFO L82 PathProgramCache]: Analyzing trace with hash -195621283, now seen corresponding path program 1 times [2020-10-13 09:23:49,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:23:49,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118941970] [2020-10-13 09:23:49,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:23:49,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:49,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:49,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:49,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 09:23:49,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:49,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-10-13 09:23:49,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:49,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:23:49,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:23:49,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 09:23:49,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:23:50,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:23:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:50,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:50,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:50,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:23:50,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:50,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 09:23:50,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:50,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:23:50,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:50,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:23:50,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:23:50,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:23:50,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118941970] [2020-10-13 09:23:50,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:23:50,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:23:50,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196945844] [2020-10-13 09:23:50,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:23:50,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:23:50,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:23:50,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:23:50,079 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 4 states. [2020-10-13 09:23:56,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:23:56,686 INFO L93 Difference]: Finished difference Result 1184 states and 2180 transitions. [2020-10-13 09:23:56,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:23:56,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-13 09:23:56,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:23:56,715 INFO L225 Difference]: With dead ends: 1184 [2020-10-13 09:23:56,715 INFO L226 Difference]: Without dead ends: 696 [2020-10-13 09:23:56,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:23:56,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-10-13 09:23:56,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 689. [2020-10-13 09:23:56,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-10-13 09:23:56,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1155 transitions. [2020-10-13 09:23:56,836 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1155 transitions. Word has length 22 [2020-10-13 09:23:56,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:23:56,837 INFO L479 AbstractCegarLoop]: Abstraction has 689 states and 1155 transitions. [2020-10-13 09:23:56,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:23:56,837 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1155 transitions. [2020-10-13 09:23:56,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 09:23:56,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:23:56,842 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:23:56,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:23:56,843 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:23:56,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:23:56,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1458421988, now seen corresponding path program 1 times [2020-10-13 09:23:56,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:23:56,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094993298] [2020-10-13 09:23:56,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:23:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:56,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:57,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:57,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:57,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:57,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 09:23:57,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:23:57,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 827 [2020-10-13 09:23:57,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:57,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:23:57,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 09:23:57,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 09:23:57,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:23:57,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:23:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:57,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:57,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:57,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:23:57,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:57,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:23:57,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:57,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:23:57,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:57,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:23:57,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:23:57,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:23:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:23:57,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:23:57,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:23:57,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:23:57,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:23:57,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 09:23:57,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:23:57,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:23:57,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:23:57,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:23:57,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-13 09:23:57,970 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:23:57,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094993298] [2020-10-13 09:23:57,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:23:57,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:23:57,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115377629] [2020-10-13 09:23:57,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:23:57,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:23:57,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:23:57,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:23:57,976 INFO L87 Difference]: Start difference. First operand 689 states and 1155 transitions. Second operand 5 states. [2020-10-13 09:24:02,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:24:02,430 INFO L93 Difference]: Finished difference Result 2063 states and 3486 transitions. [2020-10-13 09:24:02,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:24:02,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-10-13 09:24:02,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:24:02,445 INFO L225 Difference]: With dead ends: 2063 [2020-10-13 09:24:02,446 INFO L226 Difference]: Without dead ends: 1380 [2020-10-13 09:24:02,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:24:02,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2020-10-13 09:24:02,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1376. [2020-10-13 09:24:02,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1376 states. [2020-10-13 09:24:02,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 1977 transitions. [2020-10-13 09:24:02,502 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 1977 transitions. Word has length 92 [2020-10-13 09:24:02,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:24:02,503 INFO L479 AbstractCegarLoop]: Abstraction has 1376 states and 1977 transitions. [2020-10-13 09:24:02,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:24:02,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 1977 transitions. [2020-10-13 09:24:02,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 09:24:02,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:24:02,508 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:24:02,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:24:02,508 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:24:02,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:24:02,509 INFO L82 PathProgramCache]: Analyzing trace with hash -119189843, now seen corresponding path program 1 times [2020-10-13 09:24:02,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:24:02,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829751620] [2020-10-13 09:24:02,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:24:02,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:02,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:02,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:03,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:03,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:03,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 09:24:03,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:24:03,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 631 [2020-10-13 09:24:03,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:03,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:03,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 09:24:03,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 09:24:03,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:03,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:24:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:03,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:03,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:03,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:24:03,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:03,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:24:03,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:03,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:03,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:03,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:03,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:03,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:24:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:03,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:03,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:03,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:24:03,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:03,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 09:24:03,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:03,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:24:03,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:03,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:24:03,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:03,342 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:24:03,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829751620] [2020-10-13 09:24:03,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:24:03,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:24:03,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248089885] [2020-10-13 09:24:03,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:24:03,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:24:03,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:24:03,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:24:03,344 INFO L87 Difference]: Start difference. First operand 1376 states and 1977 transitions. Second operand 5 states. [2020-10-13 09:24:07,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:24:07,637 INFO L93 Difference]: Finished difference Result 3438 states and 5168 transitions. [2020-10-13 09:24:07,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:24:07,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-13 09:24:07,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:24:07,653 INFO L225 Difference]: With dead ends: 3438 [2020-10-13 09:24:07,653 INFO L226 Difference]: Without dead ends: 2068 [2020-10-13 09:24:07,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:24:07,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2068 states. [2020-10-13 09:24:07,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2068 to 2060. [2020-10-13 09:24:07,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2060 states. [2020-10-13 09:24:07,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 2950 transitions. [2020-10-13 09:24:07,725 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 2950 transitions. Word has length 93 [2020-10-13 09:24:07,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:24:07,726 INFO L479 AbstractCegarLoop]: Abstraction has 2060 states and 2950 transitions. [2020-10-13 09:24:07,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:24:07,726 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 2950 transitions. [2020-10-13 09:24:07,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 09:24:07,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:24:07,729 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:24:07,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:24:07,730 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:24:07,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:24:07,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1708086992, now seen corresponding path program 1 times [2020-10-13 09:24:07,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:24:07,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622026302] [2020-10-13 09:24:07,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:24:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:07,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:07,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:08,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:08,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 09:24:08,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:24:08,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 748 [2020-10-13 09:24:08,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:08,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:08,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-13 09:24:08,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 09:24:08,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:08,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:24:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:08,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:08,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:08,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:24:08,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:08,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:24:08,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:08,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:08,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:08,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:08,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:24:08,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:24:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:08,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:08,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:08,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 09:24:08,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:08,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-13 09:24:08,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:08,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:24:08,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:08,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 09:24:08,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:08,863 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:24:08,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622026302] [2020-10-13 09:24:08,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:24:08,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:24:08,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816090604] [2020-10-13 09:24:08,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:24:08,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:24:08,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:24:08,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:24:08,866 INFO L87 Difference]: Start difference. First operand 2060 states and 2950 transitions. Second operand 6 states. [2020-10-13 09:24:14,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:24:14,455 INFO L93 Difference]: Finished difference Result 7869 states and 11672 transitions. [2020-10-13 09:24:14,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:24:14,456 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2020-10-13 09:24:14,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:24:14,489 INFO L225 Difference]: With dead ends: 7869 [2020-10-13 09:24:14,489 INFO L226 Difference]: Without dead ends: 5815 [2020-10-13 09:24:14,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:24:14,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5815 states. [2020-10-13 09:24:14,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5815 to 5807. [2020-10-13 09:24:14,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5807 states. [2020-10-13 09:24:14,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5807 states to 5807 states and 7850 transitions. [2020-10-13 09:24:14,658 INFO L78 Accepts]: Start accepts. Automaton has 5807 states and 7850 transitions. Word has length 114 [2020-10-13 09:24:14,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:24:14,659 INFO L479 AbstractCegarLoop]: Abstraction has 5807 states and 7850 transitions. [2020-10-13 09:24:14,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:24:14,660 INFO L276 IsEmpty]: Start isEmpty. Operand 5807 states and 7850 transitions. [2020-10-13 09:24:14,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-13 09:24:14,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:24:14,670 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:24:14,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:24:14,671 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:24:14,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:24:14,672 INFO L82 PathProgramCache]: Analyzing trace with hash 218405936, now seen corresponding path program 1 times [2020-10-13 09:24:14,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:24:14,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931796745] [2020-10-13 09:24:14,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:24:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:14,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:14,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:14,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:15,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:17,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:17,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:17,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 09:24:17,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:24:17,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2302 [2020-10-13 09:24:17,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:17,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:17,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 09:24:17,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:24:17,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:17,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:24:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:17,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:17,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:17,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:24:17,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:17,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:24:17,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:17,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:17,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:17,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:17,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:17,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:24:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:17,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:17,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:17,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:24:17,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:17,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 09:24:17,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:17,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:24:17,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:17,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 09:24:17,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:17,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 09:24:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:17,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:17,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:17,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:24:17,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:17,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 09:24:17,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:17,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:17,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:24:17,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:24:17,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:17,378 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:24:17,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931796745] [2020-10-13 09:24:17,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:24:17,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:24:17,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143357897] [2020-10-13 09:24:17,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:24:17,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:24:17,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:24:17,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:24:17,389 INFO L87 Difference]: Start difference. First operand 5807 states and 7850 transitions. Second operand 7 states. [2020-10-13 09:24:22,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:24:22,873 INFO L93 Difference]: Finished difference Result 15975 states and 23682 transitions. [2020-10-13 09:24:22,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:24:22,876 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 177 [2020-10-13 09:24:22,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:24:22,954 INFO L225 Difference]: With dead ends: 15975 [2020-10-13 09:24:22,954 INFO L226 Difference]: Without dead ends: 10174 [2020-10-13 09:24:22,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:24:22,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10174 states. [2020-10-13 09:24:23,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10174 to 8265. [2020-10-13 09:24:23,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8265 states. [2020-10-13 09:24:23,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8265 states to 8265 states and 10847 transitions. [2020-10-13 09:24:23,481 INFO L78 Accepts]: Start accepts. Automaton has 8265 states and 10847 transitions. Word has length 177 [2020-10-13 09:24:23,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:24:23,482 INFO L479 AbstractCegarLoop]: Abstraction has 8265 states and 10847 transitions. [2020-10-13 09:24:23,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:24:23,482 INFO L276 IsEmpty]: Start isEmpty. Operand 8265 states and 10847 transitions. [2020-10-13 09:24:23,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-13 09:24:23,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:24:23,492 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:24:23,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:24:23,493 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:24:23,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:24:23,494 INFO L82 PathProgramCache]: Analyzing trace with hash -630354129, now seen corresponding path program 1 times [2020-10-13 09:24:23,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:24:23,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798217894] [2020-10-13 09:24:23,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:24:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:23,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:23,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:24,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:24,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:25,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:25,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-13 09:24:25,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:24:25,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1972 [2020-10-13 09:24:25,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:25,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:25,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-10-13 09:24:25,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:24:25,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:24:25,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:24:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:25,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:25,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:25,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:24:25,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:25,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 09:24:25,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:25,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:25,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:25,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:25,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:25,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:24:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:25,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:25,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:25,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 09:24:25,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:25,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-13 09:24:25,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:25,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:24:25,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:25,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-13 09:24:25,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:24:25,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-13 09:24:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:25,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:25,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:25,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:24:25,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:25,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 09:24:25,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:25,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:25,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:24:25,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:24:25,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:26,110 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:24:26,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798217894] [2020-10-13 09:24:26,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:24:26,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:24:26,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493219709] [2020-10-13 09:24:26,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:24:26,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:24:26,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:24:26,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:24:26,114 INFO L87 Difference]: Start difference. First operand 8265 states and 10847 transitions. Second operand 8 states. [2020-10-13 09:24:32,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:24:32,962 INFO L93 Difference]: Finished difference Result 20359 states and 28464 transitions. [2020-10-13 09:24:32,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 09:24:32,963 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 232 [2020-10-13 09:24:32,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:24:33,028 INFO L225 Difference]: With dead ends: 20359 [2020-10-13 09:24:33,029 INFO L226 Difference]: Without dead ends: 12437 [2020-10-13 09:24:33,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 09:24:33,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12437 states. [2020-10-13 09:24:33,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12437 to 11337. [2020-10-13 09:24:33,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11337 states. [2020-10-13 09:24:33,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11337 states to 11337 states and 15465 transitions. [2020-10-13 09:24:33,356 INFO L78 Accepts]: Start accepts. Automaton has 11337 states and 15465 transitions. Word has length 232 [2020-10-13 09:24:33,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:24:33,357 INFO L479 AbstractCegarLoop]: Abstraction has 11337 states and 15465 transitions. [2020-10-13 09:24:33,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:24:33,357 INFO L276 IsEmpty]: Start isEmpty. Operand 11337 states and 15465 transitions. [2020-10-13 09:24:33,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-13 09:24:33,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:24:33,367 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:24:33,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:24:33,367 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:24:33,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:24:33,368 INFO L82 PathProgramCache]: Analyzing trace with hash 875055336, now seen corresponding path program 1 times [2020-10-13 09:24:33,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:24:33,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048187432] [2020-10-13 09:24:33,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:24:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:33,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:33,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:34,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:35,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:35,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-13 09:24:35,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:24:35,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1722 [2020-10-13 09:24:35,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:35,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:35,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 225 [2020-10-13 09:24:35,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:24:35,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:35,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:24:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:35,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:35,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:35,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:24:35,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:35,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:24:35,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:35,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:35,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:35,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:35,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:35,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:24:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:35,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:35,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:35,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:24:35,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:35,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-13 09:24:35,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:35,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:24:35,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:35,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-13 09:24:35,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:35,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-13 09:24:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:35,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:35,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:35,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:24:35,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:35,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 09:24:35,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:35,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:35,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:24:35,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:24:35,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:35,797 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:24:35,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048187432] [2020-10-13 09:24:35,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:24:35,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:24:35,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504554350] [2020-10-13 09:24:35,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:24:35,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:24:35,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:24:35,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:24:35,800 INFO L87 Difference]: Start difference. First operand 11337 states and 15465 transitions. Second operand 7 states. [2020-10-13 09:24:44,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:24:44,258 INFO L93 Difference]: Finished difference Result 22900 states and 32625 transitions. [2020-10-13 09:24:44,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:24:44,259 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 309 [2020-10-13 09:24:44,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:24:44,314 INFO L225 Difference]: With dead ends: 22900 [2020-10-13 09:24:44,314 INFO L226 Difference]: Without dead ends: 11906 [2020-10-13 09:24:44,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:24:44,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11906 states. [2020-10-13 09:24:44,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11906 to 11383. [2020-10-13 09:24:44,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11383 states. [2020-10-13 09:24:44,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11383 states to 11383 states and 14904 transitions. [2020-10-13 09:24:44,671 INFO L78 Accepts]: Start accepts. Automaton has 11383 states and 14904 transitions. Word has length 309 [2020-10-13 09:24:44,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:24:44,672 INFO L479 AbstractCegarLoop]: Abstraction has 11383 states and 14904 transitions. [2020-10-13 09:24:44,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:24:44,672 INFO L276 IsEmpty]: Start isEmpty. Operand 11383 states and 14904 transitions. [2020-10-13 09:24:44,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2020-10-13 09:24:44,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:24:44,693 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:24:44,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:24:44,694 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:24:44,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:24:44,694 INFO L82 PathProgramCache]: Analyzing trace with hash -709251493, now seen corresponding path program 1 times [2020-10-13 09:24:44,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:24:44,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107812126] [2020-10-13 09:24:44,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:24:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:44,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:44,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:45,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:48,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:49,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:49,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:49,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-10-13 09:24:49,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:24:49,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 09:24:49,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:49,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:49,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 319 [2020-10-13 09:24:49,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 09:24:49,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:24:49,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:24:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:49,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:49,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:49,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:24:49,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:49,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:24:49,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:49,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:49,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:49,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:49,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:49,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:24:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:49,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:49,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:49,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:24:49,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:49,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 09:24:49,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:49,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:49,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:49,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:49,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:24:50,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-13 09:24:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:50,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:50,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:50,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 09:24:50,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:50,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 09:24:50,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:50,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:24:50,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:50,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 09:24:50,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:24:50,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-13 09:24:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:50,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:50,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:50,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:50,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:24:50,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:24:50,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-13 09:24:50,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:50,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:50,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:24:50,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:24:50,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:24:50,708 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2020-10-13 09:24:51,642 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-13 09:24:51,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107812126] [2020-10-13 09:24:51,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:24:51,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:24:51,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607571880] [2020-10-13 09:24:51,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:24:51,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:24:51,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:24:51,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:24:51,645 INFO L87 Difference]: Start difference. First operand 11383 states and 14904 transitions. Second operand 7 states. [2020-10-13 09:24:55,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:24:55,580 INFO L93 Difference]: Finished difference Result 21461 states and 28155 transitions. [2020-10-13 09:24:55,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:24:55,582 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 401 [2020-10-13 09:24:55,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:24:55,644 INFO L225 Difference]: With dead ends: 21461 [2020-10-13 09:24:55,645 INFO L226 Difference]: Without dead ends: 11074 [2020-10-13 09:24:55,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:24:55,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11074 states. [2020-10-13 09:24:55,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11074 to 11046. [2020-10-13 09:24:55,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11046 states. [2020-10-13 09:24:55,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11046 states to 11046 states and 14428 transitions. [2020-10-13 09:24:55,974 INFO L78 Accepts]: Start accepts. Automaton has 11046 states and 14428 transitions. Word has length 401 [2020-10-13 09:24:55,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:24:55,976 INFO L479 AbstractCegarLoop]: Abstraction has 11046 states and 14428 transitions. [2020-10-13 09:24:55,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:24:55,976 INFO L276 IsEmpty]: Start isEmpty. Operand 11046 states and 14428 transitions. [2020-10-13 09:24:56,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-10-13 09:24:56,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:24:56,008 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:24:56,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:24:56,009 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:24:56,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:24:56,011 INFO L82 PathProgramCache]: Analyzing trace with hash 684318148, now seen corresponding path program 1 times [2020-10-13 09:24:56,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:24:56,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887074620] [2020-10-13 09:24:56,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:24:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:56,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:56,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:57,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:58,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:59,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:59,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-13 09:24:59,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:24:59,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3303 [2020-10-13 09:24:59,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:59,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:24:59,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 225 [2020-10-13 09:24:59,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-13 09:24:59,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:59,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:24:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:59,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:59,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:59,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:24:59,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:59,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:24:59,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:59,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:24:59,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:59,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:24:59,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:59,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:24:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:59,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:24:59,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:24:59,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:24:59,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:24:59,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-13 09:24:59,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:24:59,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:24:59,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:24:59,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-13 09:24:59,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:24:59,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-13 09:24:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:24:59,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:00,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:00,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 09:25:00,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:00,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-13 09:25:00,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:00,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:25:00,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:25:00,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-13 09:25:00,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:00,435 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:25:00,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887074620] [2020-10-13 09:25:00,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:25:00,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:25:00,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136520620] [2020-10-13 09:25:00,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:25:00,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:25:00,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:25:00,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:25:00,442 INFO L87 Difference]: Start difference. First operand 11046 states and 14428 transitions. Second operand 7 states. [2020-10-13 09:25:09,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:25:09,367 INFO L93 Difference]: Finished difference Result 25397 states and 33958 transitions. [2020-10-13 09:25:09,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:25:09,372 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 407 [2020-10-13 09:25:09,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:25:09,429 INFO L225 Difference]: With dead ends: 25397 [2020-10-13 09:25:09,430 INFO L226 Difference]: Without dead ends: 16052 [2020-10-13 09:25:09,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:25:09,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16052 states. [2020-10-13 09:25:09,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16052 to 15553. [2020-10-13 09:25:09,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15553 states. [2020-10-13 09:25:09,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15553 states to 15553 states and 19773 transitions. [2020-10-13 09:25:09,768 INFO L78 Accepts]: Start accepts. Automaton has 15553 states and 19773 transitions. Word has length 407 [2020-10-13 09:25:09,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:25:09,769 INFO L479 AbstractCegarLoop]: Abstraction has 15553 states and 19773 transitions. [2020-10-13 09:25:09,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:25:09,769 INFO L276 IsEmpty]: Start isEmpty. Operand 15553 states and 19773 transitions. [2020-10-13 09:25:09,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2020-10-13 09:25:09,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:25:09,805 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:25:09,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:25:09,806 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:25:09,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:25:09,807 INFO L82 PathProgramCache]: Analyzing trace with hash 2133197208, now seen corresponding path program 1 times [2020-10-13 09:25:09,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:25:09,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713809198] [2020-10-13 09:25:09,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:25:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:09,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:09,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:10,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:14,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:14,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:14,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 522 [2020-10-13 09:25:14,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:25:14,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-13 09:25:14,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:14,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:25:14,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 328 [2020-10-13 09:25:14,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 09:25:14,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:15,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:25:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:15,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:15,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:15,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:25:15,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:15,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:25:15,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:15,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:15,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:15,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:15,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:25:15,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:25:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:15,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:15,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:15,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:25:15,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:15,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 09:25:15,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:15,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:15,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:15,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:15,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:25:15,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-13 09:25:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:15,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:15,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:15,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 09:25:15,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:15,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 09:25:15,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:15,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:25:15,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:15,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 09:25:15,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:15,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2020-10-13 09:25:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:15,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:15,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:15,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:15,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 09:25:15,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:25:15,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-10-13 09:25:15,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:15,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:25:15,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:25:15,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-13 09:25:15,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:16,029 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 315 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-13 09:25:16,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713809198] [2020-10-13 09:25:16,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:25:16,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:25:16,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267252996] [2020-10-13 09:25:16,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:25:16,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:25:16,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:25:16,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:25:16,033 INFO L87 Difference]: Start difference. First operand 15553 states and 19773 transitions. Second operand 7 states. [2020-10-13 09:25:21,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:25:21,814 INFO L93 Difference]: Finished difference Result 34925 states and 44826 transitions. [2020-10-13 09:25:21,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:25:21,815 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 508 [2020-10-13 09:25:21,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:25:21,895 INFO L225 Difference]: With dead ends: 34925 [2020-10-13 09:25:21,895 INFO L226 Difference]: Without dead ends: 22110 [2020-10-13 09:25:21,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:25:21,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22110 states. [2020-10-13 09:25:22,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22110 to 15214. [2020-10-13 09:25:22,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15214 states. [2020-10-13 09:25:22,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15214 states to 15214 states and 19167 transitions. [2020-10-13 09:25:22,283 INFO L78 Accepts]: Start accepts. Automaton has 15214 states and 19167 transitions. Word has length 508 [2020-10-13 09:25:22,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:25:22,284 INFO L479 AbstractCegarLoop]: Abstraction has 15214 states and 19167 transitions. [2020-10-13 09:25:22,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:25:22,284 INFO L276 IsEmpty]: Start isEmpty. Operand 15214 states and 19167 transitions. [2020-10-13 09:25:22,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2020-10-13 09:25:22,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:25:22,320 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:25:22,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:25:22,321 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:25:22,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:25:22,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1804827108, now seen corresponding path program 1 times [2020-10-13 09:25:22,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:25:22,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139562832] [2020-10-13 09:25:22,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:25:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:22,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:22,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:23,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:23,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:24,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:26,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:26,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 552 [2020-10-13 09:25:26,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:25:26,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3738 [2020-10-13 09:25:26,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:26,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:25:26,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 456 [2020-10-13 09:25:26,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:25:26,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:26,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:25:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:26,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:26,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:26,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:25:26,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:26,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:25:26,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:26,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:26,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:26,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:26,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:26,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:25:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:26,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:26,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:26,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:25:26,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:26,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:25:26,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:26,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:26,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:26,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:26,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:26,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:25:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:26,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:26,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:26,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-13 09:25:26,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:26,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 09:25:26,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:26,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:25:26,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:26,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-13 09:25:26,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:26,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-10-13 09:25:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:26,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:26,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:26,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:25:26,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:26,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 09:25:26,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:26,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:25:26,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:25:26,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:25:26,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:26,887 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2020-10-13 09:25:26,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139562832] [2020-10-13 09:25:26,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:25:26,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:25:26,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840400692] [2020-10-13 09:25:26,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:25:26,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:25:26,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:25:26,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:25:26,890 INFO L87 Difference]: Start difference. First operand 15214 states and 19167 transitions. Second operand 7 states. [2020-10-13 09:25:32,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:25:32,289 INFO L93 Difference]: Finished difference Result 31080 states and 39363 transitions. [2020-10-13 09:25:32,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:25:32,290 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 538 [2020-10-13 09:25:32,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:25:32,339 INFO L225 Difference]: With dead ends: 31080 [2020-10-13 09:25:32,339 INFO L226 Difference]: Without dead ends: 18642 [2020-10-13 09:25:32,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:25:32,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18642 states. [2020-10-13 09:25:32,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18642 to 18642. [2020-10-13 09:25:32,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18642 states. [2020-10-13 09:25:32,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18642 states to 18642 states and 23535 transitions. [2020-10-13 09:25:32,675 INFO L78 Accepts]: Start accepts. Automaton has 18642 states and 23535 transitions. Word has length 538 [2020-10-13 09:25:32,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:25:32,676 INFO L479 AbstractCegarLoop]: Abstraction has 18642 states and 23535 transitions. [2020-10-13 09:25:32,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:25:32,677 INFO L276 IsEmpty]: Start isEmpty. Operand 18642 states and 23535 transitions. [2020-10-13 09:25:32,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2020-10-13 09:25:32,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:25:32,723 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:25:32,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:25:32,723 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:25:32,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:25:32,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1188074053, now seen corresponding path program 1 times [2020-10-13 09:25:32,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:25:32,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650183428] [2020-10-13 09:25:32,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:25:32,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:32,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:32,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:34,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:35,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:35,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:37,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:37,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 655 [2020-10-13 09:25:37,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:25:37,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 09:25:37,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:37,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:25:37,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:25:37,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-10-13 09:25:37,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:37,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:25:37,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:37,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:37,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:37,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:25:37,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:37,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:25:37,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:37,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:25:37,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:37,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:25:37,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:37,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:25:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:37,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:38,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:38,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:25:38,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:38,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-13 09:25:38,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:38,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:25:38,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:25:38,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-13 09:25:38,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:38,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-13 09:25:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:38,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:38,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:38,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-13 09:25:38,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:38,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 09:25:38,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:38,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:38,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 232 [2020-10-13 09:25:38,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:38,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:38,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-10-13 09:25:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:38,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:38,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:38,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 09:25:38,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:38,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:25:38,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:38,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:38,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-13 09:25:38,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:38,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:38,677 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 45 proven. 375 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-13 09:25:38,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650183428] [2020-10-13 09:25:38,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:25:38,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:25:38,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038313189] [2020-10-13 09:25:38,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:25:38,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:25:38,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:25:38,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:25:38,680 INFO L87 Difference]: Start difference. First operand 18642 states and 23535 transitions. Second operand 7 states. [2020-10-13 09:25:43,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:25:43,587 INFO L93 Difference]: Finished difference Result 37934 states and 47600 transitions. [2020-10-13 09:25:43,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:25:43,588 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 641 [2020-10-13 09:25:43,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:25:43,634 INFO L225 Difference]: With dead ends: 37934 [2020-10-13 09:25:43,634 INFO L226 Difference]: Without dead ends: 15773 [2020-10-13 09:25:43,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:25:43,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15773 states. [2020-10-13 09:25:43,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15773 to 14718. [2020-10-13 09:25:43,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14718 states. [2020-10-13 09:25:43,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14718 states to 14718 states and 15876 transitions. [2020-10-13 09:25:43,891 INFO L78 Accepts]: Start accepts. Automaton has 14718 states and 15876 transitions. Word has length 641 [2020-10-13 09:25:43,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:25:43,892 INFO L479 AbstractCegarLoop]: Abstraction has 14718 states and 15876 transitions. [2020-10-13 09:25:43,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:25:43,892 INFO L276 IsEmpty]: Start isEmpty. Operand 14718 states and 15876 transitions. [2020-10-13 09:25:43,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 940 [2020-10-13 09:25:43,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:25:43,922 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:25:43,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:25:43,922 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:25:43,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:25:43,923 INFO L82 PathProgramCache]: Analyzing trace with hash -384555648, now seen corresponding path program 1 times [2020-10-13 09:25:43,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:25:43,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198167951] [2020-10-13 09:25:43,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:25:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:44,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:44,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:44,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:46,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:46,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:48,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:49,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:49,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 959 [2020-10-13 09:25:49,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:25:49,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 09:25:49,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:49,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:25:49,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-13 09:25:49,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 09:25:49,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:25:49,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:25:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:49,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:49,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:49,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:25:49,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:49,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:25:49,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:49,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:49,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:49,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:49,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:49,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:25:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:49,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:49,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:49,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 09:25:49,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:49,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 09:25:49,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:49,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:25:49,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:49,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-13 09:25:49,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:49,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-13 09:25:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:49,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:49,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:49,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:25:49,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:49,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 09:25:49,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:49,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:25:49,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:25:49,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-13 09:25:49,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:49,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-13 09:25:49,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:49,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:49,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:49,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:25:49,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:49,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 09:25:49,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:49,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:49,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:25:49,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:49,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:49,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2020-10-13 09:25:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:49,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:49,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:49,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-13 09:25:49,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:49,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 09:25:49,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:49,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:49,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 322 [2020-10-13 09:25:49,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:49,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:49,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:25:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:49,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:49,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:49,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 09:25:49,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:49,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 09:25:49,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:49,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:49,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:49,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:49,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:49,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 853 [2020-10-13 09:25:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:49,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:49,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:49,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:25:49,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:49,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:25:49,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:49,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:49,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 09:25:49,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:49,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:50,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1251 backedges. 199 proven. 295 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2020-10-13 09:25:50,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198167951] [2020-10-13 09:25:50,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:25:50,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:25:50,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014923846] [2020-10-13 09:25:50,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:25:50,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:25:50,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:25:50,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:25:50,269 INFO L87 Difference]: Start difference. First operand 14718 states and 15876 transitions. Second operand 7 states. [2020-10-13 09:25:53,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:25:53,989 INFO L93 Difference]: Finished difference Result 32132 states and 34729 transitions. [2020-10-13 09:25:53,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:25:53,990 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 939 [2020-10-13 09:25:53,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:25:54,027 INFO L225 Difference]: With dead ends: 32132 [2020-10-13 09:25:54,027 INFO L226 Difference]: Without dead ends: 18794 [2020-10-13 09:25:54,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:25:54,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18794 states. [2020-10-13 09:25:54,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18794 to 18780. [2020-10-13 09:25:54,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18780 states. [2020-10-13 09:25:54,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18780 states to 18780 states and 20081 transitions. [2020-10-13 09:25:54,329 INFO L78 Accepts]: Start accepts. Automaton has 18780 states and 20081 transitions. Word has length 939 [2020-10-13 09:25:54,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:25:54,330 INFO L479 AbstractCegarLoop]: Abstraction has 18780 states and 20081 transitions. [2020-10-13 09:25:54,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:25:54,330 INFO L276 IsEmpty]: Start isEmpty. Operand 18780 states and 20081 transitions. [2020-10-13 09:25:54,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1044 [2020-10-13 09:25:54,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:25:54,361 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:25:54,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:25:54,361 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:25:54,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:25:54,362 INFO L82 PathProgramCache]: Analyzing trace with hash 2080568880, now seen corresponding path program 1 times [2020-10-13 09:25:54,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:25:54,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448503146] [2020-10-13 09:25:54,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:25:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:54,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:54,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:55,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:56,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:59,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:59,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1063 [2020-10-13 09:25:59,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:25:59,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 09:25:59,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:59,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:25:59,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-13 09:25:59,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 09:25:59,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:59,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:25:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:59,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:59,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:59,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:25:59,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:59,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:25:59,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:59,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:59,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:59,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:59,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:59,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:25:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:59,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:59,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:59,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:25:59,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:59,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 09:25:59,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:59,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:25:59,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:25:59,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-13 09:25:59,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:59,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:25:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:59,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:59,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:59,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:25:59,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:59,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 09:25:59,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:59,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:25:59,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:25:59,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-13 09:25:59,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:25:59,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-13 09:25:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:25:59,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:25:59,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:25:59,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:25:59,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:25:59,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 09:25:59,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:25:59,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:25:59,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:25:59,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:25:59,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:00,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-13 09:26:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:00,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:00,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:00,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-13 09:26:00,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:00,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 09:26:00,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:00,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:00,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 322 [2020-10-13 09:26:00,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:00,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:00,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:26:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:00,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:00,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:00,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 09:26:00,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:00,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 09:26:00,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:00,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:00,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:00,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:00,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:00,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 957 [2020-10-13 09:26:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:00,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:00,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:00,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:26:00,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:00,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:26:00,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:00,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:00,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 09:26:00,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:00,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:00,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1459 backedges. 199 proven. 295 refuted. 0 times theorem prover too weak. 965 trivial. 0 not checked. [2020-10-13 09:26:00,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448503146] [2020-10-13 09:26:00,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:26:00,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:26:00,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250703295] [2020-10-13 09:26:00,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:26:00,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:26:00,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:26:00,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:26:00,825 INFO L87 Difference]: Start difference. First operand 18780 states and 20081 transitions. Second operand 7 states. [2020-10-13 09:26:04,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:26:04,021 INFO L93 Difference]: Finished difference Result 36533 states and 39083 transitions. [2020-10-13 09:26:04,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:26:04,022 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1043 [2020-10-13 09:26:04,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:26:04,057 INFO L225 Difference]: With dead ends: 36533 [2020-10-13 09:26:04,057 INFO L226 Difference]: Without dead ends: 19466 [2020-10-13 09:26:04,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:26:04,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19466 states. [2020-10-13 09:26:04,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19466 to 19107. [2020-10-13 09:26:04,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19107 states. [2020-10-13 09:26:04,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19107 states to 19107 states and 20293 transitions. [2020-10-13 09:26:04,356 INFO L78 Accepts]: Start accepts. Automaton has 19107 states and 20293 transitions. Word has length 1043 [2020-10-13 09:26:04,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:26:04,357 INFO L479 AbstractCegarLoop]: Abstraction has 19107 states and 20293 transitions. [2020-10-13 09:26:04,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:26:04,357 INFO L276 IsEmpty]: Start isEmpty. Operand 19107 states and 20293 transitions. [2020-10-13 09:26:04,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1054 [2020-10-13 09:26:04,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:26:04,379 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:26:04,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:26:04,379 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:26:04,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:26:04,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1147148156, now seen corresponding path program 1 times [2020-10-13 09:26:04,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:26:04,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44316449] [2020-10-13 09:26:04,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:26:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:04,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:04,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:04,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:05,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:09,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:09,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1073 [2020-10-13 09:26:09,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:26:09,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5126 [2020-10-13 09:26:09,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:09,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:26:09,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-13 09:26:09,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 09:26:09,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:09,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:26:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:09,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:09,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:09,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:26:09,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:09,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:26:09,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:09,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:09,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:09,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:09,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:09,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:26:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:09,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:09,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:09,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:26:09,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:09,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 09:26:09,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:09,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:26:09,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:09,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-13 09:26:09,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:09,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:26:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:09,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:10,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:10,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:26:10,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:10,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 09:26:10,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:10,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:26:10,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:26:10,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-13 09:26:10,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:10,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-13 09:26:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:10,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:10,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:10,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:26:10,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:10,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 09:26:10,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:10,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:10,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:26:10,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:10,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:10,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 645 [2020-10-13 09:26:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:10,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:10,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:10,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-13 09:26:10,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:10,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 09:26:10,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:10,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:10,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 322 [2020-10-13 09:26:10,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:10,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:10,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:26:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:10,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:10,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:10,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 09:26:10,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:10,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 09:26:10,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:10,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:10,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:10,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:10,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:10,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 967 [2020-10-13 09:26:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:10,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:10,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:10,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:26:10,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:10,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:26:10,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:10,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:10,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 09:26:10,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:10,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:11,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1479 backedges. 199 proven. 295 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2020-10-13 09:26:11,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44316449] [2020-10-13 09:26:11,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:26:11,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:26:11,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307788842] [2020-10-13 09:26:11,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:26:11,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:26:11,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:26:11,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:26:11,144 INFO L87 Difference]: Start difference. First operand 19107 states and 20293 transitions. Second operand 8 states. [2020-10-13 09:26:15,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:26:15,444 INFO L93 Difference]: Finished difference Result 38862 states and 41337 transitions. [2020-10-13 09:26:15,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:26:15,446 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1053 [2020-10-13 09:26:15,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:26:15,474 INFO L225 Difference]: With dead ends: 38862 [2020-10-13 09:26:15,475 INFO L226 Difference]: Without dead ends: 21470 [2020-10-13 09:26:15,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-13 09:26:15,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21470 states. [2020-10-13 09:26:15,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21470 to 21466. [2020-10-13 09:26:15,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21466 states. [2020-10-13 09:26:15,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21466 states to 21466 states and 22541 transitions. [2020-10-13 09:26:15,776 INFO L78 Accepts]: Start accepts. Automaton has 21466 states and 22541 transitions. Word has length 1053 [2020-10-13 09:26:15,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:26:15,776 INFO L479 AbstractCegarLoop]: Abstraction has 21466 states and 22541 transitions. [2020-10-13 09:26:15,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:26:15,777 INFO L276 IsEmpty]: Start isEmpty. Operand 21466 states and 22541 transitions. [2020-10-13 09:26:15,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1359 [2020-10-13 09:26:15,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:26:15,814 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:26:15,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:26:15,814 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:26:15,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:26:15,815 INFO L82 PathProgramCache]: Analyzing trace with hash -208035733, now seen corresponding path program 1 times [2020-10-13 09:26:15,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:26:15,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051462923] [2020-10-13 09:26:15,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:26:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:16,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:16,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:16,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:16,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:21,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:21,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1378 [2020-10-13 09:26:21,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:26:21,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 09:26:21,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:21,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:26:21,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 731 [2020-10-13 09:26:21,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-13 09:26:21,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:21,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:26:21,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:21,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:21,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:21,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:26:21,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:21,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:26:21,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:21,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:21,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:21,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:21,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:21,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:26:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:21,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:21,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:21,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:26:21,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:21,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:26:21,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:21,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:21,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:21,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:21,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:21,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:26:21,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:21,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:21,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:21,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:26:21,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:21,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:26:21,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:21,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:21,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:21,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:21,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:21,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-10-13 09:26:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:21,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:21,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:21,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:26:21,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:21,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-13 09:26:21,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:21,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:26:21,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:21,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-13 09:26:21,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:21,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 725 [2020-10-13 09:26:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:21,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:22,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:22,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:26:22,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:22,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-13 09:26:22,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:22,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:26:22,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:26:22,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-13 09:26:22,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:22,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 940 [2020-10-13 09:26:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:22,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:22,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:22,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-13 09:26:22,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:22,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 09:26:22,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:22,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:22,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 232 [2020-10-13 09:26:22,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:22,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:22,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1174 [2020-10-13 09:26:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:22,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:22,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:22,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 09:26:22,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:22,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 09:26:22,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:22,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:22,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-13 09:26:22,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:22,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:23,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3082 backedges. 740 proven. 381 refuted. 0 times theorem prover too weak. 1961 trivial. 0 not checked. [2020-10-13 09:26:23,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051462923] [2020-10-13 09:26:23,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:26:23,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:26:23,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559356257] [2020-10-13 09:26:23,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:26:23,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:26:23,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:26:23,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:26:23,419 INFO L87 Difference]: Start difference. First operand 21466 states and 22541 transitions. Second operand 7 states. [2020-10-13 09:26:27,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:26:27,129 INFO L93 Difference]: Finished difference Result 40884 states and 42979 transitions. [2020-10-13 09:26:27,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:26:27,130 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1358 [2020-10-13 09:26:27,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:26:27,163 INFO L225 Difference]: With dead ends: 40884 [2020-10-13 09:26:27,163 INFO L226 Difference]: Without dead ends: 21470 [2020-10-13 09:26:27,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-13 09:26:27,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21470 states. [2020-10-13 09:26:27,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21470 to 21129. [2020-10-13 09:26:27,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21129 states. [2020-10-13 09:26:27,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21129 states to 21129 states and 22105 transitions. [2020-10-13 09:26:27,420 INFO L78 Accepts]: Start accepts. Automaton has 21129 states and 22105 transitions. Word has length 1358 [2020-10-13 09:26:27,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:26:27,421 INFO L479 AbstractCegarLoop]: Abstraction has 21129 states and 22105 transitions. [2020-10-13 09:26:27,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:26:27,422 INFO L276 IsEmpty]: Start isEmpty. Operand 21129 states and 22105 transitions. [2020-10-13 09:26:27,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1430 [2020-10-13 09:26:27,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:26:27,457 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:26:27,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:26:27,458 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:26:27,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:26:27,458 INFO L82 PathProgramCache]: Analyzing trace with hash 917406395, now seen corresponding path program 1 times [2020-10-13 09:26:27,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:26:27,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956031881] [2020-10-13 09:26:27,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:26:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:27,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:27,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:28,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:28,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:28,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:32,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:32,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1451 [2020-10-13 09:26:32,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:26:32,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 09:26:32,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:32,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:26:32,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 731 [2020-10-13 09:26:32,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:26:32,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:32,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:26:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:32,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:32,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:32,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:26:32,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:32,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:26:32,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:32,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:32,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:32,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:32,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:32,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:26:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:32,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:32,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:32,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:26:32,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:32,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 09:26:32,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:32,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:32,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:32,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:32,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:32,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:26:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:32,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:32,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:32,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:26:32,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:32,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:26:32,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:32,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:32,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:32,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:32,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:32,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-10-13 09:26:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:33,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:33,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:33,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:26:33,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:33,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-13 09:26:33,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:33,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:26:33,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:33,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-13 09:26:33,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:33,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 725 [2020-10-13 09:26:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:33,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:33,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:33,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:26:33,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:33,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-13 09:26:33,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:33,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:26:33,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:26:33,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:26:33,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:33,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-10-13 09:26:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:33,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:33,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:33,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:26:33,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:33,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 09:26:33,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:33,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:33,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-13 09:26:33,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:33,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:33,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1011 [2020-10-13 09:26:33,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:33,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:33,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:33,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-13 09:26:33,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:33,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 09:26:33,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:33,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:33,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 232 [2020-10-13 09:26:33,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:33,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:33,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1245 [2020-10-13 09:26:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:33,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:33,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:33,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 09:26:33,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:33,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:26:33,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:33,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:33,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-13 09:26:33,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:33,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:34,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3523 backedges. 355 proven. 206 refuted. 0 times theorem prover too weak. 2962 trivial. 0 not checked. [2020-10-13 09:26:34,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956031881] [2020-10-13 09:26:34,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:26:34,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:26:34,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777402848] [2020-10-13 09:26:34,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:26:34,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:26:34,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:26:34,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:26:34,917 INFO L87 Difference]: Start difference. First operand 21129 states and 22105 transitions. Second operand 8 states. [2020-10-13 09:26:40,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:26:40,546 INFO L93 Difference]: Finished difference Result 42937 states and 44953 transitions. [2020-10-13 09:26:40,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 09:26:40,548 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1429 [2020-10-13 09:26:40,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:26:40,586 INFO L225 Difference]: With dead ends: 42937 [2020-10-13 09:26:40,586 INFO L226 Difference]: Without dead ends: 23848 [2020-10-13 09:26:40,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 09:26:40,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23848 states. [2020-10-13 09:26:40,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23848 to 22488. [2020-10-13 09:26:40,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22488 states. [2020-10-13 09:26:40,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22488 states to 22488 states and 23461 transitions. [2020-10-13 09:26:40,862 INFO L78 Accepts]: Start accepts. Automaton has 22488 states and 23461 transitions. Word has length 1429 [2020-10-13 09:26:40,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:26:40,862 INFO L479 AbstractCegarLoop]: Abstraction has 22488 states and 23461 transitions. [2020-10-13 09:26:40,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:26:40,863 INFO L276 IsEmpty]: Start isEmpty. Operand 22488 states and 23461 transitions. [2020-10-13 09:26:40,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1542 [2020-10-13 09:26:40,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:26:40,902 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:26:40,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 09:26:40,902 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:26:40,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:26:40,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1861579130, now seen corresponding path program 1 times [2020-10-13 09:26:40,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:26:40,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654927693] [2020-10-13 09:26:40,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:26:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:41,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:41,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:41,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:41,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:43,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:46,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:46,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1565 [2020-10-13 09:26:46,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:26:46,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 09:26:46,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:46,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:26:46,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 845 [2020-10-13 09:26:46,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:26:46,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:46,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:26:46,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:46,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:46,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:46,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:26:46,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:46,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:26:46,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:46,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:46,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:46,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:46,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:46,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:26:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:46,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:46,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:46,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:26:46,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:46,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:26:46,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:46,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:46,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:46,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:46,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:46,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:26:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:46,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:46,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:46,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:26:46,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:46,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 09:26:46,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:46,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:46,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:46,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:46,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:46,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-10-13 09:26:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:46,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:46,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:46,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:26:46,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:46,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 09:26:46,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:46,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:46,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:46,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:46,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:46,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 725 [2020-10-13 09:26:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:46,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:46,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:46,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 09:26:46,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:46,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:26:46,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:46,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:26:46,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:46,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 09:26:46,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:46,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 837 [2020-10-13 09:26:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:46,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:46,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:46,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:26:46,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:46,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 09:26:46,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:46,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:26:46,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:26:46,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:26:46,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:46,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 908 [2020-10-13 09:26:46,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:46,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:46,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:46,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:26:46,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:46,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-13 09:26:46,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:46,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:46,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-13 09:26:46,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:46,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:26:47,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1123 [2020-10-13 09:26:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:47,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:47,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:47,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-13 09:26:47,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:47,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-13 09:26:47,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:47,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:47,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 232 [2020-10-13 09:26:47,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:47,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:26:47,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1357 [2020-10-13 09:26:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:47,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:47,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:47,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 09:26:47,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:47,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 09:26:47,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:47,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:47,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-13 09:26:47,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:47,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:26:49,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4281 backedges. 455 proven. 206 refuted. 0 times theorem prover too weak. 3620 trivial. 0 not checked. [2020-10-13 09:26:49,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654927693] [2020-10-13 09:26:49,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:26:49,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:26:49,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861192142] [2020-10-13 09:26:49,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:26:49,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:26:49,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:26:49,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:26:49,563 INFO L87 Difference]: Start difference. First operand 22488 states and 23461 transitions. Second operand 7 states. [2020-10-13 09:26:55,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:26:55,517 INFO L93 Difference]: Finished difference Result 43527 states and 46001 transitions. [2020-10-13 09:26:55,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:26:55,520 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1541 [2020-10-13 09:26:55,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:26:55,568 INFO L225 Difference]: With dead ends: 43527 [2020-10-13 09:26:55,568 INFO L226 Difference]: Without dead ends: 23079 [2020-10-13 09:26:55,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:26:55,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23079 states. [2020-10-13 09:26:55,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23079 to 22829. [2020-10-13 09:26:55,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22829 states. [2020-10-13 09:26:55,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22829 states to 22829 states and 23818 transitions. [2020-10-13 09:26:55,808 INFO L78 Accepts]: Start accepts. Automaton has 22829 states and 23818 transitions. Word has length 1541 [2020-10-13 09:26:55,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:26:55,809 INFO L479 AbstractCegarLoop]: Abstraction has 22829 states and 23818 transitions. [2020-10-13 09:26:55,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:26:55,809 INFO L276 IsEmpty]: Start isEmpty. Operand 22829 states and 23818 transitions. [2020-10-13 09:26:55,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1643 [2020-10-13 09:26:55,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:26:55,837 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:26:55,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 09:26:55,837 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:26:55,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:26:55,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1539519384, now seen corresponding path program 1 times [2020-10-13 09:26:55,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:26:55,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243108391] [2020-10-13 09:26:55,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:26:55,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:56,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:56,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:56,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:56,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:57,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:01,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:01,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1664 [2020-10-13 09:27:01,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:27:01,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5109 [2020-10-13 09:27:01,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:01,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:27:01,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-13 09:27:01,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-13 09:27:01,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:01,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:27:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:01,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:01,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:01,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:27:01,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:01,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:27:01,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:01,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:27:01,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:01,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:27:01,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:01,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:27:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:01,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:01,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:01,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:27:01,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:01,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-13 09:27:01,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:01,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:27:01,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:01,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-13 09:27:01,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:01,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:27:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:01,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:01,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:01,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:27:01,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:01,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-13 09:27:01,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:01,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:27:01,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:27:01,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-13 09:27:01,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:01,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-10-13 09:27:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:01,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:01,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:01,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:27:01,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:01,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 09:27:01,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:01,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:27:01,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:27:01,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:27:01,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:01,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 725 [2020-10-13 09:27:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:01,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:02,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:02,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-13 09:27:02,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:02,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 09:27:02,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:02,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:27:02,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-13 09:27:02,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:27:02,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:02,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1009 [2020-10-13 09:27:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:02,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:02,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:02,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:27:02,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:02,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 09:27:02,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:02,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:27:02,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-13 09:27:02,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:27:02,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:02,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1224 [2020-10-13 09:27:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:02,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:02,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:02,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-13 09:27:02,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:02,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 09:27:02,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:02,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:27:02,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 232 [2020-10-13 09:27:02,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:27:02,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:02,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1458 [2020-10-13 09:27:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:02,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:02,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:02,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 09:27:02,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:02,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:27:02,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:02,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:27:02,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-13 09:27:02,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:27:02,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:03,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4433 backedges. 317 proven. 937 refuted. 0 times theorem prover too weak. 3179 trivial. 0 not checked. [2020-10-13 09:27:03,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243108391] [2020-10-13 09:27:03,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:27:03,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:27:03,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108631138] [2020-10-13 09:27:03,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:27:03,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:27:03,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:27:03,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:27:03,529 INFO L87 Difference]: Start difference. First operand 22829 states and 23818 transitions. Second operand 7 states. [2020-10-13 09:27:09,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:27:09,294 INFO L93 Difference]: Finished difference Result 45571 states and 48125 transitions. [2020-10-13 09:27:09,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:27:09,295 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1642 [2020-10-13 09:27:09,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:27:09,331 INFO L225 Difference]: With dead ends: 45571 [2020-10-13 09:27:09,331 INFO L226 Difference]: Without dead ends: 23428 [2020-10-13 09:27:09,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:27:09,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23428 states. [2020-10-13 09:27:09,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23428 to 22496. [2020-10-13 09:27:09,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22496 states. [2020-10-13 09:27:09,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22496 states to 22496 states and 23455 transitions. [2020-10-13 09:27:09,620 INFO L78 Accepts]: Start accepts. Automaton has 22496 states and 23455 transitions. Word has length 1642 [2020-10-13 09:27:09,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:27:09,621 INFO L479 AbstractCegarLoop]: Abstraction has 22496 states and 23455 transitions. [2020-10-13 09:27:09,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:27:09,621 INFO L276 IsEmpty]: Start isEmpty. Operand 22496 states and 23455 transitions. [2020-10-13 09:27:09,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1724 [2020-10-13 09:27:09,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:27:09,651 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-13 09:27:09,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 09:27:09,651 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:27:09,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:27:09,652 INFO L82 PathProgramCache]: Analyzing trace with hash -545523557, now seen corresponding path program 1 times [2020-10-13 09:27:09,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:27:09,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117202277] [2020-10-13 09:27:09,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:27:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:09,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:10,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:10,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:10,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:11,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:14,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:14,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1745 [2020-10-13 09:27:14,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:27:14,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-13 09:27:14,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:14,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:27:14,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1098 [2020-10-13 09:27:14,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-13 09:27:14,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:15,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:27:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:15,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:15,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:15,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:27:15,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:15,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:27:15,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:15,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:27:15,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:15,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:27:15,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:15,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:27:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:15,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:15,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:15,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:27:15,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:15,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:27:15,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:15,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:27:15,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:15,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:27:15,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:15,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:27:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:15,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:15,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:15,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:27:15,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:15,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 09:27:15,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:15,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:27:15,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:15,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:27:15,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:15,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-10-13 09:27:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:15,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:15,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:15,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:27:15,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:15,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 09:27:15,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:15,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:27:15,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:15,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:27:15,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:15,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 806 [2020-10-13 09:27:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:15,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:15,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:15,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-13 09:27:15,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:15,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-13 09:27:15,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:15,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:27:15,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:15,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 279 [2020-10-13 09:27:15,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:15,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1090 [2020-10-13 09:27:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:15,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:15,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:15,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 09:27:15,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:15,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-13 09:27:15,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:15,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:27:15,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:27:15,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-13 09:27:15,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:16,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1305 [2020-10-13 09:27:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:16,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:16,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:16,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-13 09:27:16,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:16,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 09:27:16,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:16,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:27:16,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 232 [2020-10-13 09:27:16,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:27:16,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:16,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1539 [2020-10-13 09:27:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:16,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:16,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:16,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 09:27:16,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:16,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:27:16,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:16,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:27:16,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-13 09:27:16,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:27:16,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:17,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4705 backedges. 1000 proven. 381 refuted. 0 times theorem prover too weak. 3324 trivial. 0 not checked. [2020-10-13 09:27:17,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117202277] [2020-10-13 09:27:17,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:27:17,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:27:17,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382102191] [2020-10-13 09:27:17,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:27:17,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:27:17,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:27:17,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:27:17,831 INFO L87 Difference]: Start difference. First operand 22496 states and 23455 transitions. Second operand 7 states.