/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/seq-mthreaded/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:14:59,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:14:59,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:14:59,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:14:59,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:14:59,395 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:14:59,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:14:59,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:14:59,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:14:59,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:14:59,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:14:59,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:14:59,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:14:59,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:14:59,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:14:59,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:14:59,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:14:59,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:14:59,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:14:59,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:14:59,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:14:59,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:14:59,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:14:59,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:14:59,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:14:59,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:14:59,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:14:59,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:14:59,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:14:59,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:14:59,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:14:59,430 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:14:59,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:14:59,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:14:59,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:14:59,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:14:59,434 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:14:59,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:14:59,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:14:59,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:14:59,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:14:59,436 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 13:14:59,460 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:14:59,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:14:59,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:14:59,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:14:59,462 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:14:59,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:14:59,463 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:14:59,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:14:59,463 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:14:59,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:14:59,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:14:59,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:14:59,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:14:59,464 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:14:59,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:14:59,464 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:14:59,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:14:59,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:14:59,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:14:59,465 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:14:59,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:14:59,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:14:59,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:14:59,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:14:59,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:14:59,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:14:59,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:14:59,467 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:14:59,467 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:14:59,467 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 13:14:59,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:14:59,822 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:14:59,825 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:14:59,827 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:14:59,828 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:14:59,829 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c [2020-10-13 13:14:59,895 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c34639364/a07a7775b4b04bfe9047c844a0fec541/FLAGe2697289d [2020-10-13 13:15:00,415 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:15:00,416 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c [2020-10-13 13:15:00,428 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c34639364/a07a7775b4b04bfe9047c844a0fec541/FLAGe2697289d [2020-10-13 13:15:00,778 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c34639364/a07a7775b4b04bfe9047c844a0fec541 [2020-10-13 13:15:00,788 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:15:00,790 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:15:00,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:15:00,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:15:00,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:15:00,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:15:00" (1/1) ... [2020-10-13 13:15:00,801 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32c8b7f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:00, skipping insertion in model container [2020-10-13 13:15:00,801 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:15:00" (1/1) ... [2020-10-13 13:15:00,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:15:00,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:15:01,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:15:01,268 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:15:01,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:15:01,403 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:15:01,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:01 WrapperNode [2020-10-13 13:15:01,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:15:01,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:15:01,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:15:01,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:15:01,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:01" (1/1) ... [2020-10-13 13:15:01,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:01" (1/1) ... [2020-10-13 13:15:01,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:01" (1/1) ... [2020-10-13 13:15:01,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:01" (1/1) ... [2020-10-13 13:15:01,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:01" (1/1) ... [2020-10-13 13:15:01,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:01" (1/1) ... [2020-10-13 13:15:01,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:01" (1/1) ... [2020-10-13 13:15:01,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:15:01,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:15:01,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:15:01,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:15:01,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:01" (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 13:15:01,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:15:01,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:15:01,535 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-13 13:15:01,535 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-13 13:15:01,535 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-13 13:15:01,536 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-13 13:15:01,536 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-13 13:15:01,536 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:15:01,541 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-13 13:15:01,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:15:01,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 13:15:01,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 13:15:01,542 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 13:15:01,542 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 13:15:01,542 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 13:15:01,542 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 13:15:01,543 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 13:15:01,543 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 13:15:01,543 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 13:15:01,543 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 13:15:01,543 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 13:15:01,543 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:15:01,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:15:01,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:15:02,390 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:15:02,390 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 13:15:02,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:15:02 BoogieIcfgContainer [2020-10-13 13:15:02,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:15:02,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:15:02,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:15:02,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:15:02,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:15:00" (1/3) ... [2020-10-13 13:15:02,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1097fc61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:15:02, skipping insertion in model container [2020-10-13 13:15:02,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:01" (2/3) ... [2020-10-13 13:15:02,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1097fc61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:15:02, skipping insertion in model container [2020-10-13 13:15:02,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:15:02" (3/3) ... [2020-10-13 13:15:02,407 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.BOUNDED-6.pals.c [2020-10-13 13:15:02,419 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:15:02,429 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:15:02,445 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:15:02,474 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:15:02,475 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:15:02,475 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:15:02,475 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:15:02,475 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:15:02,476 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:15:02,476 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:15:02,476 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:15:02,501 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states. [2020-10-13 13:15:02,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 13:15:02,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:02,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:15:02,514 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:02,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:02,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1364421405, now seen corresponding path program 1 times [2020-10-13 13:15:02,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:02,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222763447] [2020-10-13 13:15:02,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:02,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:03,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:03,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 13:15:03,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:03,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-10-13 13:15:03,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:03,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:03,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 13:15:03,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:03,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:15:03,531 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:15:03,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:15:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:03,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:03,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:03,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:15:03,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:03,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:15:03,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:03,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:03,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:03,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:03,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:03,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:15:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:03,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:03,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:03,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:15:03,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:03,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:15:03,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:03,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:03,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:03,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:03,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:03,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 13:15:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:03,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:03,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:03,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:03,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:03,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:15:03,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:03,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:03,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:03,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:03,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:03,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 13:15:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:03,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:03,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:03,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:03,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:03,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:15:03,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:03,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:03,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:03,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:03,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:03,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 13:15:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:03,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:03,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:03,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:03,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:03,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:15:03,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:03,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:03,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:03,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:03,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:03,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 13:15:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:03,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:03,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:03,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:03,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:03,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:15:03,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:03,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:03,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:03,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:03,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:03,768 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 13:15:03,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222763447] [2020-10-13 13:15:03,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:15:03,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 13:15:03,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061777150] [2020-10-13 13:15:03,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:15:03,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:15:03,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:15:03,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:15:03,799 INFO L87 Difference]: Start difference. First operand 155 states. Second operand 6 states. [2020-10-13 13:15:04,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:15:04,906 INFO L93 Difference]: Finished difference Result 258 states and 411 transitions. [2020-10-13 13:15:04,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:15:04,908 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-13 13:15:04,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:15:04,923 INFO L225 Difference]: With dead ends: 258 [2020-10-13 13:15:04,923 INFO L226 Difference]: Without dead ends: 162 [2020-10-13 13:15:04,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:15:04,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-13 13:15:04,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 150. [2020-10-13 13:15:04,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-13 13:15:04,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 243 transitions. [2020-10-13 13:15:04,992 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 243 transitions. Word has length 58 [2020-10-13 13:15:04,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:15:04,993 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 243 transitions. [2020-10-13 13:15:04,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:15:04,993 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 243 transitions. [2020-10-13 13:15:04,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 13:15:04,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:04,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:15:04,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:15:04,997 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:04,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:04,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1292034847, now seen corresponding path program 1 times [2020-10-13 13:15:04,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:04,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36309720] [2020-10-13 13:15:04,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:05,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:05,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:05,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 13:15:05,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:05,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 578 [2020-10-13 13:15:05,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:05,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:15:05,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 13:15:05,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:15:05,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:05,817 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:15:05,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:15:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:05,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:05,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:05,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:15:05,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:05,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:15:05,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:05,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:05,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:05,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:05,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:05,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:15:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:05,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:05,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:05,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:15:05,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:05,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 13:15:05,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:05,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:05,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:05,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:15:05,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:05,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 13:15:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:06,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:06,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:06,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:06,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:06,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:15:06,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:06,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:06,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:06,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:06,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:06,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 13:15:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:06,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:06,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:06,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:06,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:06,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:15:06,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:06,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:06,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:06,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:06,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:06,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 13:15:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:06,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:06,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:06,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:06,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:06,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:15:06,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:06,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:06,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:06,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:06,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:06,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 13:15:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:06,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:06,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:06,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:06,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:06,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:15:06,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:06,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:06,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:06,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:06,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:06,112 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 13:15:06,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36309720] [2020-10-13 13:15:06,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:15:06,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:15:06,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267083611] [2020-10-13 13:15:06,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:15:06,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:15:06,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:15:06,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:15:06,116 INFO L87 Difference]: Start difference. First operand 150 states and 243 transitions. Second operand 10 states. [2020-10-13 13:15:06,607 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:15:06,778 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:15:08,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:15:08,034 INFO L93 Difference]: Finished difference Result 262 states and 414 transitions. [2020-10-13 13:15:08,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 13:15:08,035 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-10-13 13:15:08,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:15:08,039 INFO L225 Difference]: With dead ends: 262 [2020-10-13 13:15:08,039 INFO L226 Difference]: Without dead ends: 171 [2020-10-13 13:15:08,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-13 13:15:08,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-13 13:15:08,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 150. [2020-10-13 13:15:08,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-13 13:15:08,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 216 transitions. [2020-10-13 13:15:08,066 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 216 transitions. Word has length 58 [2020-10-13 13:15:08,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:15:08,067 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 216 transitions. [2020-10-13 13:15:08,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:15:08,067 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 216 transitions. [2020-10-13 13:15:08,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 13:15:08,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:08,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:15:08,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:15:08,071 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:08,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:08,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1402954698, now seen corresponding path program 1 times [2020-10-13 13:15:08,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:08,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643350587] [2020-10-13 13:15:08,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:08,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:08,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:08,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:09,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:13,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:13,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 13:15:13,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:15:13,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 13:15:13,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:13,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:13,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 13:15:13,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 13:15:13,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:13,291 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:15:13,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:15:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:13,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:13,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:13,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:15:13,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:13,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:15:13,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:13,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:13,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:13,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:13,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:13,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:15:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:13,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:13,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:13,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:15:13,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:13,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 13:15:13,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:13,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:15:13,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:13,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:15:13,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:13,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:15:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:13,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:13,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:13,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:13,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:13,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:15:13,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:13,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:13,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:15:13,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:15:13,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:13,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 13:15:13,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:13,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:13,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:13,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:13,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:13,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:15:13,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:13,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:13,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:13,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:13,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:13,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 13:15:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:13,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:13,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:13,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:13,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:13,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:15:13,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:13,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:13,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:13,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:13,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:13,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 13:15:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:13,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:13,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:13,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:13,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:13,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:15:13,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:13,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:13,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:13,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:13,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:13,555 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 13:15:13,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643350587] [2020-10-13 13:15:13,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:15:13,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:15:13,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624642999] [2020-10-13 13:15:13,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:15:13,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:15:13,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:15:13,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:15:13,561 INFO L87 Difference]: Start difference. First operand 150 states and 216 transitions. Second operand 9 states. [2020-10-13 13:15:13,796 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:15:15,319 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:15:15,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:15:15,703 INFO L93 Difference]: Finished difference Result 346 states and 519 transitions. [2020-10-13 13:15:15,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:15:15,704 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-10-13 13:15:15,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:15:15,709 INFO L225 Difference]: With dead ends: 346 [2020-10-13 13:15:15,709 INFO L226 Difference]: Without dead ends: 261 [2020-10-13 13:15:15,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:15:15,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-13 13:15:15,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 229. [2020-10-13 13:15:15,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-13 13:15:15,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 332 transitions. [2020-10-13 13:15:15,745 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 332 transitions. Word has length 84 [2020-10-13 13:15:15,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:15:15,745 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 332 transitions. [2020-10-13 13:15:15,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:15:15,746 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 332 transitions. [2020-10-13 13:15:15,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 13:15:15,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:15,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:15:15,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:15:15,750 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:15,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:15,751 INFO L82 PathProgramCache]: Analyzing trace with hash 350295045, now seen corresponding path program 1 times [2020-10-13 13:15:15,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:15,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229026969] [2020-10-13 13:15:15,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:15,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:15,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:15,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:16,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:17,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:20,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:20,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 13:15:20,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:15:20,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 13:15:20,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:20,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:20,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:15:20,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 13:15:20,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:21,037 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:15:21,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:15:21,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:21,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:21,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:21,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:15:21,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:21,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:15:21,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:21,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:21,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:21,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:21,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:21,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:15:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:21,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:21,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:21,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:15:21,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:21,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 13:15:21,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:21,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:15:21,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:21,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 13:15:21,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:21,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:15:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:21,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:21,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:21,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:15:21,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:21,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:15:21,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:21,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:15:21,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:21,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:15:21,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:21,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:15:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:21,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:21,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:21,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:21,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:21,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:15:21,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:21,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:21,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:15:21,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:15:21,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:21,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:15:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:21,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:21,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:21,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:21,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:21,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:15:21,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:21,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:21,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:21,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:21,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:21,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 13:15:21,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:21,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:21,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:21,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:21,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:21,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:15:21,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:21,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:21,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:21,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:21,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:21,301 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 13:15:21,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229026969] [2020-10-13 13:15:21,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:15:21,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:15:21,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277183277] [2020-10-13 13:15:21,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:15:21,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:15:21,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:15:21,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:15:21,304 INFO L87 Difference]: Start difference. First operand 229 states and 332 transitions. Second operand 9 states. [2020-10-13 13:15:21,464 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:15:23,153 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:15:23,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:15:23,342 INFO L93 Difference]: Finished difference Result 601 states and 890 transitions. [2020-10-13 13:15:23,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:15:23,343 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2020-10-13 13:15:23,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:15:23,348 INFO L225 Difference]: With dead ends: 601 [2020-10-13 13:15:23,348 INFO L226 Difference]: Without dead ends: 437 [2020-10-13 13:15:23,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:15:23,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-10-13 13:15:23,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 381. [2020-10-13 13:15:23,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-10-13 13:15:23,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 558 transitions. [2020-10-13 13:15:23,397 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 558 transitions. Word has length 86 [2020-10-13 13:15:23,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:15:23,398 INFO L479 AbstractCegarLoop]: Abstraction has 381 states and 558 transitions. [2020-10-13 13:15:23,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:15:23,398 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 558 transitions. [2020-10-13 13:15:23,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 13:15:23,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:23,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:15:23,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:15:23,401 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:23,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:23,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1045085748, now seen corresponding path program 1 times [2020-10-13 13:15:23,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:23,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799309629] [2020-10-13 13:15:23,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:23,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:23,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:23,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:23,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:23,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:25,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:28,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:28,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 13:15:28,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:15:28,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 13:15:28,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:28,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:15:28,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 13:15:28,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 13:15:28,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:28,662 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:15:28,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:15:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:28,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:28,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:28,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:15:28,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:28,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:15:28,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:28,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:28,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:28,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:28,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:28,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:15:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:28,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:28,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:28,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:15:28,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:28,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 13:15:28,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:28,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:28,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:28,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 13:15:28,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:28,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:15:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:28,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:28,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:28,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:15:28,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:28,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:15:28,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:28,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:28,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:15:28,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:15:28,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:28,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:15:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:28,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:28,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:28,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:15:28,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:28,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:15:28,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:28,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:28,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:15:28,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:15:28,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:28,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:15:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:28,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:29,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:29,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:29,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:29,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:15:29,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:29,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:29,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:15:29,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:15:29,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:29,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 13:15:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:29,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:29,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:29,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:29,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:29,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:15:29,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:29,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:15:29,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:15:29,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:15:29,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:29,090 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 13:15:29,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799309629] [2020-10-13 13:15:29,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:15:29,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-13 13:15:29,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591868778] [2020-10-13 13:15:29,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 13:15:29,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:15:29,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 13:15:29,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:15:29,094 INFO L87 Difference]: Start difference. First operand 381 states and 558 transitions. Second operand 13 states. [2020-10-13 13:15:29,320 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:15:29,716 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:15:29,877 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:15:31,577 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:15:31,740 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:15:31,962 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 13:15:35,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:15:35,784 INFO L93 Difference]: Finished difference Result 2205 states and 3342 transitions. [2020-10-13 13:15:35,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-13 13:15:35,788 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 88 [2020-10-13 13:15:35,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:15:35,811 INFO L225 Difference]: With dead ends: 2205 [2020-10-13 13:15:35,812 INFO L226 Difference]: Without dead ends: 1889 [2020-10-13 13:15:35,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 720 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=593, Invalid=1957, Unknown=0, NotChecked=0, Total=2550 [2020-10-13 13:15:35,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2020-10-13 13:15:35,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1603. [2020-10-13 13:15:35,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1603 states. [2020-10-13 13:15:35,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 2413 transitions. [2020-10-13 13:15:35,990 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 2413 transitions. Word has length 88 [2020-10-13 13:15:35,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:15:35,991 INFO L479 AbstractCegarLoop]: Abstraction has 1603 states and 2413 transitions. [2020-10-13 13:15:35,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 13:15:35,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 2413 transitions. [2020-10-13 13:15:35,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-13 13:15:35,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:35,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:15:35,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:15:35,995 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:35,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:35,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1638095605, now seen corresponding path program 1 times [2020-10-13 13:15:35,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:35,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159531290] [2020-10-13 13:15:35,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:36,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:36,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:36,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:36,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:36,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:36,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:39,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:41,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:41,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 13:15:41,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:15:41,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:15:41,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:41,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:15:41,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 13:15:41,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 13:15:41,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:41,211 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:15:41,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:15:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:41,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:41,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:41,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:15:41,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:41,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:15:41,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:41,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:41,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:41,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:41,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:41,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:15:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:41,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:41,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:41,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:15:41,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:41,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 13:15:41,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:41,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:41,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:41,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 13:15:41,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:41,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:15:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:41,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:41,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:41,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:15:41,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:41,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:15:41,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:41,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:41,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:15:41,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:15:41,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:41,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:15:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:41,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:41,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:41,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:15:41,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:41,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:15:41,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:41,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:41,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:15:41,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:15:41,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:41,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:15:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:41,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:41,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:41,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:41,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:41,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:15:41,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:41,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:41,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:15:41,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:15:41,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:41,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 13:15:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:41,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:41,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:41,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:15:41,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:41,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:15:41,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:41,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:15:41,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:15:41,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:15:41,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:41,547 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 13:15:41,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159531290] [2020-10-13 13:15:41,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:15:41,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-13 13:15:41,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619113092] [2020-10-13 13:15:41,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 13:15:41,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:15:41,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 13:15:41,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:15:41,550 INFO L87 Difference]: Start difference. First operand 1603 states and 2413 transitions. Second operand 14 states. [2020-10-13 13:15:41,768 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 13:15:42,302 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:15:42,466 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:15:42,634 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:15:44,394 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:15:44,577 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-13 13:15:44,753 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-13 13:15:44,942 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:15:47,887 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:15:48,149 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-13 13:15:50,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:15:50,690 INFO L93 Difference]: Finished difference Result 6955 states and 10711 transitions. [2020-10-13 13:15:50,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-13 13:15:50,692 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 89 [2020-10-13 13:15:50,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:15:50,721 INFO L225 Difference]: With dead ends: 6955 [2020-10-13 13:15:50,722 INFO L226 Difference]: Without dead ends: 5417 [2020-10-13 13:15:50,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1539 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=974, Invalid=3856, Unknown=0, NotChecked=0, Total=4830 [2020-10-13 13:15:50,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5417 states. [2020-10-13 13:15:51,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5417 to 4137. [2020-10-13 13:15:51,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4137 states. [2020-10-13 13:15:51,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4137 states to 4137 states and 6368 transitions. [2020-10-13 13:15:51,038 INFO L78 Accepts]: Start accepts. Automaton has 4137 states and 6368 transitions. Word has length 89 [2020-10-13 13:15:51,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:15:51,040 INFO L479 AbstractCegarLoop]: Abstraction has 4137 states and 6368 transitions. [2020-10-13 13:15:51,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 13:15:51,040 INFO L276 IsEmpty]: Start isEmpty. Operand 4137 states and 6368 transitions. [2020-10-13 13:15:51,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-13 13:15:51,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:51,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:15:51,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:15:51,045 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:51,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:51,045 INFO L82 PathProgramCache]: Analyzing trace with hash 75152046, now seen corresponding path program 1 times [2020-10-13 13:15:51,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:51,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530067824] [2020-10-13 13:15:51,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:51,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:51,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:51,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:51,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:51,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:51,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:52,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:54,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:56,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:56,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 13:15:56,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:15:56,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 13:15:56,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:56,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:56,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 13:15:56,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:15:56,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:56,314 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:15:56,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:15:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:56,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:56,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:56,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:15:56,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:56,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:15:56,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:56,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:56,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:56,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:56,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:56,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:15:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:56,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:56,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:56,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:15:56,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:56,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 13:15:56,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:56,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:15:56,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:56,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 13:15:56,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:56,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:15:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:56,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:56,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:56,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:15:56,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:56,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:15:56,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:56,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:15:56,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:56,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:15:56,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:56,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:15:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:56,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:56,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:56,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:15:56,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:56,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 13:15:56,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:56,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:56,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:15:56,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:15:56,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:56,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 13:15:56,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:56,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:56,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:56,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:56,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:56,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:15:56,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:56,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:56,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:56,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:56,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:56,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 13:15:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:56,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:56,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:56,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:56,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:56,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:15:56,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:56,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:56,662 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 13:15:56,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530067824] [2020-10-13 13:15:56,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:15:56,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 13:15:56,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51332078] [2020-10-13 13:15:56,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:15:56,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:15:56,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:15:56,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:15:56,673 INFO L87 Difference]: Start difference. First operand 4137 states and 6368 transitions. Second operand 8 states. [2020-10-13 13:15:56,886 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:15:59,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:15:59,006 INFO L93 Difference]: Finished difference Result 9600 states and 14808 transitions. [2020-10-13 13:15:59,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:15:59,012 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-10-13 13:15:59,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:15:59,050 INFO L225 Difference]: With dead ends: 9600 [2020-10-13 13:15:59,050 INFO L226 Difference]: Without dead ends: 6966 [2020-10-13 13:15:59,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:15:59,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6966 states. [2020-10-13 13:15:59,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6966 to 6084. [2020-10-13 13:15:59,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6084 states. [2020-10-13 13:15:59,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6084 states to 6084 states and 9298 transitions. [2020-10-13 13:15:59,488 INFO L78 Accepts]: Start accepts. Automaton has 6084 states and 9298 transitions. Word has length 89 [2020-10-13 13:15:59,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:15:59,489 INFO L479 AbstractCegarLoop]: Abstraction has 6084 states and 9298 transitions. [2020-10-13 13:15:59,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:15:59,489 INFO L276 IsEmpty]: Start isEmpty. Operand 6084 states and 9298 transitions. [2020-10-13 13:15:59,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-13 13:15:59,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:59,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:15:59,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:15:59,491 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:59,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:59,492 INFO L82 PathProgramCache]: Analyzing trace with hash 524597203, now seen corresponding path program 1 times [2020-10-13 13:15:59,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:59,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520309592] [2020-10-13 13:15:59,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:59,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:59,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:59,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:59,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:59,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:59,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:00,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:01,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:04,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:04,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:04,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 13:16:04,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:16:04,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 13:16:04,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:04,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:04,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 13:16:04,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:16:04,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:04,707 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:16:04,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:16:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:04,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:04,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:04,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:16:04,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:04,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:16:04,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:04,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:04,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:04,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:04,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:04,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:16:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:04,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:04,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:04,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:16:04,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:04,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 13:16:04,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:04,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:04,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:04,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:16:04,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:04,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:16:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:04,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:04,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:04,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:16:04,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:04,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 13:16:04,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:04,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:04,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:04,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:16:04,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:04,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:16:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:04,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:04,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:04,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:04,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:04,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:16:04,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:04,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:04,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:16:04,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:04,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:04,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 13:16:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:04,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:04,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:04,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:04,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:04,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:16:04,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:04,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:04,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:16:04,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:04,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:04,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 13:16:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:04,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:05,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:05,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:05,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:05,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:16:05,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:05,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:05,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:16:05,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:05,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:05,034 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 13:16:05,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520309592] [2020-10-13 13:16:05,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:16:05,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 13:16:05,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082319365] [2020-10-13 13:16:05,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:16:05,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:16:05,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:16:05,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:16:05,038 INFO L87 Difference]: Start difference. First operand 6084 states and 9298 transitions. Second operand 8 states. [2020-10-13 13:16:05,299 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:16:08,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:16:08,374 INFO L93 Difference]: Finished difference Result 15368 states and 23607 transitions. [2020-10-13 13:16:08,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:16:08,375 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-10-13 13:16:08,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:16:08,429 INFO L225 Difference]: With dead ends: 15368 [2020-10-13 13:16:08,429 INFO L226 Difference]: Without dead ends: 10628 [2020-10-13 13:16:08,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:16:08,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10628 states. [2020-10-13 13:16:09,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10628 to 9382. [2020-10-13 13:16:09,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9382 states. [2020-10-13 13:16:09,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9382 states to 9382 states and 14225 transitions. [2020-10-13 13:16:09,140 INFO L78 Accepts]: Start accepts. Automaton has 9382 states and 14225 transitions. Word has length 89 [2020-10-13 13:16:09,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:16:09,140 INFO L479 AbstractCegarLoop]: Abstraction has 9382 states and 14225 transitions. [2020-10-13 13:16:09,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:16:09,141 INFO L276 IsEmpty]: Start isEmpty. Operand 9382 states and 14225 transitions. [2020-10-13 13:16:09,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 13:16:09,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:16:09,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:16:09,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:16:09,142 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:16:09,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:16:09,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1505120245, now seen corresponding path program 1 times [2020-10-13 13:16:09,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:16:09,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159499966] [2020-10-13 13:16:09,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:16:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:09,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:09,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:09,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:09,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:09,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:09,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:12,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:14,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:14,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 13:16:14,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:16:14,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 13:16:14,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:14,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:14,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 13:16:14,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 13:16:14,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:14,338 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:16:14,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:16:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:14,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:14,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:14,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:16:14,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:14,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:16:14,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:14,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:14,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:14,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:14,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:14,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:16:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:14,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:14,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:14,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:16:14,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:14,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 13:16:14,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:14,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:14,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:14,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:16:14,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:14,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:16:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:14,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:14,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:14,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:14,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:14,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:16:14,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:14,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:14,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:14,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:16:14,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:14,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:16:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:14,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:14,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:14,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:14,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:14,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:16:14,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:14,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:14,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:14,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:16:14,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:14,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:16:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:14,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:14,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:14,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:14,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:14,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:16:14,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:14,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:14,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:14,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:16:14,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:14,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 13:16:14,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:14,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:14,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:14,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:14,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:14,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:16:14,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:14,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:14,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:16:14,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:14,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:14,632 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 13:16:14,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159499966] [2020-10-13 13:16:14,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:16:14,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:16:14,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365382382] [2020-10-13 13:16:14,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:16:14,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:16:14,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:16:14,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:16:14,635 INFO L87 Difference]: Start difference. First operand 9382 states and 14225 transitions. Second operand 9 states. [2020-10-13 13:16:14,850 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:16:16,440 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:16:17,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:16:17,638 INFO L93 Difference]: Finished difference Result 26361 states and 39598 transitions. [2020-10-13 13:16:17,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:16:17,638 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-10-13 13:16:17,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:16:17,711 INFO L225 Difference]: With dead ends: 26361 [2020-10-13 13:16:17,711 INFO L226 Difference]: Without dead ends: 17069 [2020-10-13 13:16:17,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:16:17,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17069 states. [2020-10-13 13:16:18,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17069 to 14521. [2020-10-13 13:16:18,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14521 states. [2020-10-13 13:16:18,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14521 states to 14521 states and 21758 transitions. [2020-10-13 13:16:18,903 INFO L78 Accepts]: Start accepts. Automaton has 14521 states and 21758 transitions. Word has length 90 [2020-10-13 13:16:18,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:16:18,904 INFO L479 AbstractCegarLoop]: Abstraction has 14521 states and 21758 transitions. [2020-10-13 13:16:18,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:16:18,904 INFO L276 IsEmpty]: Start isEmpty. Operand 14521 states and 21758 transitions. [2020-10-13 13:16:18,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-13 13:16:18,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:16:18,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:16:18,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:16:18,908 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:16:18,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:16:18,908 INFO L82 PathProgramCache]: Analyzing trace with hash 2424660, now seen corresponding path program 1 times [2020-10-13 13:16:18,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:16:18,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603660130] [2020-10-13 13:16:18,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:16:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:18,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:19,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:19,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:19,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:19,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:19,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:19,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:19,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:19,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:23,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:23,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 13:16:23,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:16:23,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 13:16:23,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:23,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:23,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 13:16:23,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 13:16:23,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:24,081 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:16:24,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:16:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:24,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:24,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:24,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:16:24,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:24,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:16:24,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:24,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:24,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:24,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:24,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:24,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:16:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:24,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:24,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:24,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:16:24,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:24,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:16:24,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:24,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:24,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:24,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 13:16:24,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:24,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:16:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:24,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:24,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:24,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:24,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:24,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:16:24,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:24,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:24,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:24,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:16:24,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:24,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:16:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:24,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:24,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:24,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:24,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:24,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:16:24,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:24,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:24,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:24,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:16:24,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:24,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:16:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:24,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:24,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:24,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:16:24,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:24,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:16:24,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:24,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:24,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:24,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:16:24,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:24,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 13:16:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:24,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:24,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:24,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:24,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:24,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:16:24,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:24,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:24,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:16:24,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:24,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:24,262 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 13:16:24,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603660130] [2020-10-13 13:16:24,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:16:24,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 13:16:24,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323731866] [2020-10-13 13:16:24,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:16:24,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:16:24,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:16:24,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:16:24,263 INFO L87 Difference]: Start difference. First operand 14521 states and 21758 transitions. Second operand 8 states. [2020-10-13 13:16:24,507 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:16:27,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:16:27,448 INFO L93 Difference]: Finished difference Result 33362 states and 50171 transitions. [2020-10-13 13:16:27,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:16:27,449 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 91 [2020-10-13 13:16:27,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:16:27,564 INFO L225 Difference]: With dead ends: 33362 [2020-10-13 13:16:27,564 INFO L226 Difference]: Without dead ends: 23886 [2020-10-13 13:16:27,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:16:27,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23886 states. [2020-10-13 13:16:28,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23886 to 21232. [2020-10-13 13:16:28,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21232 states. [2020-10-13 13:16:29,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21232 states to 21232 states and 31458 transitions. [2020-10-13 13:16:29,039 INFO L78 Accepts]: Start accepts. Automaton has 21232 states and 31458 transitions. Word has length 91 [2020-10-13 13:16:29,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:16:29,039 INFO L479 AbstractCegarLoop]: Abstraction has 21232 states and 31458 transitions. [2020-10-13 13:16:29,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:16:29,039 INFO L276 IsEmpty]: Start isEmpty. Operand 21232 states and 31458 transitions. [2020-10-13 13:16:29,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 13:16:29,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:16:29,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:16:29,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:16:29,040 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:16:29,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:16:29,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1672452966, now seen corresponding path program 1 times [2020-10-13 13:16:29,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:16:29,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258117020] [2020-10-13 13:16:29,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:16:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:29,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:29,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:29,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:29,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:29,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:29,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:29,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:31,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:34,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:34,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 13:16:34,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:16:34,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 13:16:34,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:34,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:16:34,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:16:34,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 13:16:34,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:16:34,247 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:16:34,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:16:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:34,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:34,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:34,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:16:34,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:34,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:16:34,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:34,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:34,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:34,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:34,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:34,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:16:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:34,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:34,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:34,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:16:34,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:34,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 13:16:34,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:34,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:16:34,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:34,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:16:34,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:34,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:16:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:34,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:34,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:34,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:34,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:34,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:16:34,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:34,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:34,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 13:16:34,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:16:34,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:34,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:16:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:34,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:34,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:34,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:34,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:34,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:16:34,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:34,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:34,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:16:34,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:34,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:34,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:16:34,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:34,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:34,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:34,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:34,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:34,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:16:34,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:34,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:34,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:16:34,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:34,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:34,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:16:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:34,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:34,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:34,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:34,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:34,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:16:34,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:34,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:34,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:16:34,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:34,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:34,489 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 13:16:34,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258117020] [2020-10-13 13:16:34,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:16:34,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:16:34,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006604163] [2020-10-13 13:16:34,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:16:34,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:16:34,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:16:34,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:16:34,491 INFO L87 Difference]: Start difference. First operand 21232 states and 31458 transitions. Second operand 9 states. [2020-10-13 13:16:34,669 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:16:34,865 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:16:35,064 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 13:16:35,723 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 153 [2020-10-13 13:16:36,247 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 13:16:39,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:16:39,832 INFO L93 Difference]: Finished difference Result 67265 states and 101074 transitions. [2020-10-13 13:16:39,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 13:16:39,832 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-10-13 13:16:39,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:16:40,177 INFO L225 Difference]: With dead ends: 67265 [2020-10-13 13:16:40,177 INFO L226 Difference]: Without dead ends: 46064 [2020-10-13 13:16:40,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:16:40,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46064 states. [2020-10-13 13:16:42,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46064 to 41962. [2020-10-13 13:16:42,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41962 states. [2020-10-13 13:16:42,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41962 states to 41962 states and 61411 transitions. [2020-10-13 13:16:42,916 INFO L78 Accepts]: Start accepts. Automaton has 41962 states and 61411 transitions. Word has length 92 [2020-10-13 13:16:42,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:16:42,917 INFO L479 AbstractCegarLoop]: Abstraction has 41962 states and 61411 transitions. [2020-10-13 13:16:42,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:16:42,917 INFO L276 IsEmpty]: Start isEmpty. Operand 41962 states and 61411 transitions. [2020-10-13 13:16:42,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 13:16:42,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:16:42,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:16:42,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:16:42,919 INFO L427 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:16:42,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:16:42,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1149971250, now seen corresponding path program 1 times [2020-10-13 13:16:42,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:16:42,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851557244] [2020-10-13 13:16:42,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:16:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:42,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:42,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:42,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:43,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:43,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:43,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:43,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:46,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:46,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:47,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:47,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 13:16:47,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:16:47,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:16:47,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:47,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:47,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 13:16:47,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:16:47,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:48,091 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:16:48,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:16:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:48,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:48,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:48,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:16:48,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:48,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:16:48,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:48,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:48,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:48,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:48,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:48,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:16:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:48,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:48,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:48,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:48,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 13:16:48,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:16:48,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 13:16:48,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:48,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:48,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 13:16:48,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:16:48,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:48,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 13:16:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:48,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:48,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:48,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:48,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:48,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:16:48,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:48,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:48,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:16:48,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:48,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:48,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:16:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:48,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:48,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:48,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:48,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:48,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:16:48,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:48,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:48,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:16:48,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:48,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:48,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 13:16:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:48,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:48,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:48,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:48,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:48,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:16:48,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:48,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:48,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:16:48,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:48,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:48,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 13:16:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:48,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:48,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:48,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:48,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:48,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:16:48,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:48,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:48,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:16:48,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:48,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:48,281 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 13:16:48,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851557244] [2020-10-13 13:16:48,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:16:48,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 13:16:48,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125276914] [2020-10-13 13:16:48,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:16:48,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:16:48,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:16:48,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:16:48,283 INFO L87 Difference]: Start difference. First operand 41962 states and 61411 transitions. Second operand 7 states. [2020-10-13 13:16:48,485 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:16:51,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:16:51,560 INFO L93 Difference]: Finished difference Result 88117 states and 128900 transitions. [2020-10-13 13:16:51,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:16:51,560 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-10-13 13:16:51,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:16:51,729 INFO L225 Difference]: With dead ends: 88117 [2020-10-13 13:16:51,729 INFO L226 Difference]: Without dead ends: 46189 [2020-10-13 13:16:51,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:16:51,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46189 states. [2020-10-13 13:16:55,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46189 to 41964. [2020-10-13 13:16:55,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41964 states. [2020-10-13 13:16:56,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41964 states to 41964 states and 61413 transitions. [2020-10-13 13:16:56,065 INFO L78 Accepts]: Start accepts. Automaton has 41964 states and 61413 transitions. Word has length 93 [2020-10-13 13:16:56,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:16:56,066 INFO L479 AbstractCegarLoop]: Abstraction has 41964 states and 61413 transitions. [2020-10-13 13:16:56,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:16:56,066 INFO L276 IsEmpty]: Start isEmpty. Operand 41964 states and 61413 transitions. [2020-10-13 13:16:56,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 13:16:56,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:16:56,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:16:56,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 13:16:56,068 INFO L427 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:16:56,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:16:56,068 INFO L82 PathProgramCache]: Analyzing trace with hash -815748683, now seen corresponding path program 1 times [2020-10-13 13:16:56,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:16:56,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348069916] [2020-10-13 13:16:56,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:16:56,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:56,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:56,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:56,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:56,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:56,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:58,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:58,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:01,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:01,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 13:17:01,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:17:01,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5134 [2020-10-13 13:17:01,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:01,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:17:01,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 13:17:01,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 13:17:01,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:01,373 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:17:01,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:17:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:01,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:01,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:01,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:17:01,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:01,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:17:01,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:01,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:01,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:01,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:01,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:01,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:17:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:01,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:01,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:01,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:17:01,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:01,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 13:17:01,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:01,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:17:01,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:01,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 13:17:01,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:01,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:17:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:01,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:01,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:01,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:17:01,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:01,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:17:01,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:01,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:01,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:01,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:17:01,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:01,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 13:17:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:01,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:01,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:01,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:01,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:01,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:17:01,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:01,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:17:01,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:17:01,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:17:01,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:01,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:17:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:01,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:01,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:01,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:01,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:01,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:17:01,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:01,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:01,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:01,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:17:01,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:01,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:17:01,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:01,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:01,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:01,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:01,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:01,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:17:01,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:01,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:01,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 13:17:01,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:17:01,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:01,582 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 13:17:01,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348069916] [2020-10-13 13:17:01,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:17:01,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:17:01,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734666709] [2020-10-13 13:17:01,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:17:01,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:17:01,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:17:01,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:17:01,584 INFO L87 Difference]: Start difference. First operand 41964 states and 61413 transitions. Second operand 10 states. [2020-10-13 13:17:01,769 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:17:02,215 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:17:03,588 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:17:03,757 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:17:12,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:17:12,126 INFO L93 Difference]: Finished difference Result 150308 states and 220786 transitions. [2020-10-13 13:17:12,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 13:17:12,127 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-13 13:17:12,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:17:12,475 INFO L225 Difference]: With dead ends: 150308 [2020-10-13 13:17:12,475 INFO L226 Difference]: Without dead ends: 108555 [2020-10-13 13:17:12,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 13:17:12,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108555 states. [2020-10-13 13:17:19,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108555 to 98801. [2020-10-13 13:17:19,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98801 states. [2020-10-13 13:17:20,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98801 states to 98801 states and 143617 transitions. [2020-10-13 13:17:20,060 INFO L78 Accepts]: Start accepts. Automaton has 98801 states and 143617 transitions. Word has length 94 [2020-10-13 13:17:20,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:17:20,060 INFO L479 AbstractCegarLoop]: Abstraction has 98801 states and 143617 transitions. [2020-10-13 13:17:20,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:17:20,061 INFO L276 IsEmpty]: Start isEmpty. Operand 98801 states and 143617 transitions. [2020-10-13 13:17:20,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 13:17:20,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:17:20,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:17:20,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 13:17:20,078 INFO L427 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:17:20,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:17:20,079 INFO L82 PathProgramCache]: Analyzing trace with hash -316566782, now seen corresponding path program 1 times [2020-10-13 13:17:20,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:17:20,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262487376] [2020-10-13 13:17:20,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:17:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:20,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:20,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:20,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:20,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:20,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:20,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:21,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:25,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:25,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 13:17:25,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:17:25,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 13:17:25,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:25,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:17:25,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 13:17:25,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 13:17:25,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:25,311 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:17:25,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:17:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:25,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:25,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:25,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:17:25,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:25,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:17:25,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:25,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:25,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:25,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:25,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:25,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:17:25,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:25,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:25,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:25,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:17:25,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:25,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 13:17:25,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:25,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:17:25,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:25,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 13:17:25,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:25,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:17:25,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:25,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:25,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:25,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:17:25,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:25,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:17:25,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:25,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:25,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:25,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:17:25,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:25,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 13:17:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:25,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:25,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:25,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:25,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:25,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:17:25,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:25,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:25,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:25,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:17:25,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:25,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:17:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:25,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:25,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:25,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:25,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:25,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:17:25,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:25,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:17:25,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:17:25,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:17:25,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:25,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:17:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:25,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:25,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:25,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:17:25,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:25,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:17:25,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:25,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:25,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:17:25,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:17:25,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:25,534 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 13:17:25,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262487376] [2020-10-13 13:17:25,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:17:25,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:17:25,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766567391] [2020-10-13 13:17:25,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:17:25,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:17:25,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:17:25,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:17:25,536 INFO L87 Difference]: Start difference. First operand 98801 states and 143617 transitions. Second operand 10 states. [2020-10-13 13:17:25,713 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:17:26,154 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:17:27,403 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:17:27,585 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:17:46,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:17:46,750 INFO L93 Difference]: Finished difference Result 424313 states and 619390 transitions. [2020-10-13 13:17:46,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 13:17:46,751 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 95 [2020-10-13 13:17:46,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:17:48,313 INFO L225 Difference]: With dead ends: 424313 [2020-10-13 13:17:48,314 INFO L226 Difference]: Without dead ends: 325723 [2020-10-13 13:17:48,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=254, Invalid=802, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 13:17:48,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325723 states. [2020-10-13 13:18:09,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325723 to 261912. [2020-10-13 13:18:09,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261912 states. [2020-10-13 13:18:10,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261912 states to 261912 states and 378490 transitions. [2020-10-13 13:18:10,264 INFO L78 Accepts]: Start accepts. Automaton has 261912 states and 378490 transitions. Word has length 95 [2020-10-13 13:18:10,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:18:10,264 INFO L479 AbstractCegarLoop]: Abstraction has 261912 states and 378490 transitions. [2020-10-13 13:18:10,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:18:10,265 INFO L276 IsEmpty]: Start isEmpty. Operand 261912 states and 378490 transitions. [2020-10-13 13:18:10,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 13:18:10,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:18:10,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:18:10,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 13:18:10,266 INFO L427 AbstractCegarLoop]: === Iteration 15 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:18:10,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:18:10,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1034941976, now seen corresponding path program 1 times [2020-10-13 13:18:10,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:18:10,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089568830] [2020-10-13 13:18:10,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:18:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:10,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:10,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:10,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:10,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:10,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:11,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:18,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:18,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 13:18:18,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:18:18,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8449 [2020-10-13 13:18:18,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:18,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:18:18,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:18:18,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 13:18:18,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:18,890 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:18:18,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:18:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:18,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:18,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:18,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:18:18,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:18,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:18:18,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:18,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:18:18,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:18:18,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:18:18,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:18,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:18:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:18,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:18,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:18,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:18:18,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:18,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 13:18:18,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:18,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:18:18,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:18:18,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:18:18,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:18,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:18:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:18,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:18,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:18,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:18:18,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:18,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:18:18,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:18,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:18:18,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:18:18,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:18:18,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:19,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 13:18:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:19,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:19,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:19,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:18:19,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:19,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:18:19,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:19,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:18:19,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:18:19,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:18:19,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:19,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:18:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:19,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:19,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:19,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:18:19,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:19,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:18:19,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:19,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:18:19,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:18:19,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:18:19,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:19,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:18:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:19,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:19,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:19,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:18:19,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:19,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:18:19,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:19,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:18:19,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:18:19,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:18:19,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:19,089 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 13:18:19,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089568830] [2020-10-13 13:18:19,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:18:19,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:18:19,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572087060] [2020-10-13 13:18:19,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:18:19,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:18:19,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:18:19,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:18:19,091 INFO L87 Difference]: Start difference. First operand 261912 states and 378490 transitions. Second operand 9 states. [2020-10-13 13:18:19,263 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:18:19,418 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:18:19,587 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 13:18:19,745 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 13:18:20,407 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 151