/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:39:02,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:39:02,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:39:02,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:39:02,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:39:02,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:39:02,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:39:02,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:39:02,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:39:02,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:39:02,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:39:02,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:39:02,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:39:02,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:39:02,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:39:02,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:39:02,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:39:02,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:39:02,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:39:02,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:39:02,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:39:02,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:39:02,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:39:02,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:39:02,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:39:02,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:39:02,461 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:39:02,462 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:39:02,463 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:39:02,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:39:02,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:39:02,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:39:02,465 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:39:02,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:39:02,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:39:02,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:39:02,470 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:39:02,470 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:39:02,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:39:02,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:39:02,472 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:39:02,473 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 19:39:02,516 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:39:02,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:39:02,517 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:39:02,517 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:39:02,518 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:39:02,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:39:02,518 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:39:02,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:39:02,519 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:39:02,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:39:02,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:39:02,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:39:02,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:39:02,520 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:39:02,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:39:02,520 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:39:02,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:39:02,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:39:02,521 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:39:02,521 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:39:02,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:39:02,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:39:02,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:39:02,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:39:02,522 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:39:02,522 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:39:02,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:39:02,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:39:02,522 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:39:02,523 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:39:02,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:39:02,867 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:39:02,870 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:39:02,872 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:39:02,872 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:39:02,873 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-12 19:39:02,935 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b2f99937/8bb962cd4ec64341b2d25c3c0c67ca5f/FLAG84bf7219b [2020-10-12 19:39:03,403 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:39:03,407 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-12 19:39:03,424 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b2f99937/8bb962cd4ec64341b2d25c3c0c67ca5f/FLAG84bf7219b [2020-10-12 19:39:03,715 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b2f99937/8bb962cd4ec64341b2d25c3c0c67ca5f [2020-10-12 19:39:03,725 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:39:03,726 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:39:03,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:39:03,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:39:03,732 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:39:03,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:39:03" (1/1) ... [2020-10-12 19:39:03,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57916dbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:39:03, skipping insertion in model container [2020-10-12 19:39:03,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:39:03" (1/1) ... [2020-10-12 19:39:03,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:39:03,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:39:04,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:39:04,316 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:39:04,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:39:04,434 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:39:04,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:39:04 WrapperNode [2020-10-12 19:39:04,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:39:04,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:39:04,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:39:04,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:39:04,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:39:04" (1/1) ... [2020-10-12 19:39:04,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:39:04" (1/1) ... [2020-10-12 19:39:04,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:39:04" (1/1) ... [2020-10-12 19:39:04,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:39:04" (1/1) ... [2020-10-12 19:39:04,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:39:04" (1/1) ... [2020-10-12 19:39:04,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:39:04" (1/1) ... [2020-10-12 19:39:04,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:39:04" (1/1) ... [2020-10-12 19:39:04,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:39:04,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:39:04,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:39:04,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:39:04,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:39:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:39:04,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:39:04,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:39:04,571 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:39:04,571 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:39:04,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:39:04,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:39:04,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:39:04,572 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:39:04,573 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:39:04,573 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:39:04,573 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:39:04,573 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:39:04,573 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:39:04,573 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:39:04,573 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:39:04,574 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:39:04,575 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 19:39:04,575 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:39:04,575 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:39:04,575 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:39:04,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:39:04,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:39:05,456 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:39:05,456 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:39:05,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:39:05 BoogieIcfgContainer [2020-10-12 19:39:05,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:39:05,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:39:05,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:39:05,473 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:39:05,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:39:03" (1/3) ... [2020-10-12 19:39:05,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@734dec41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:39:05, skipping insertion in model container [2020-10-12 19:39:05,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:39:04" (2/3) ... [2020-10-12 19:39:05,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@734dec41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:39:05, skipping insertion in model container [2020-10-12 19:39:05,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:39:05" (3/3) ... [2020-10-12 19:39:05,478 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-12 19:39:05,491 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:39:05,502 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:39:05,516 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:39:05,539 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:39:05,539 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:39:05,540 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:39:05,540 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:39:05,540 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:39:05,540 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:39:05,540 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:39:05,540 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:39:05,561 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states. [2020-10-12 19:39:05,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 19:39:05,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:39:05,571 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] [2020-10-12 19:39:05,572 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:39:05,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:39:05,578 INFO L82 PathProgramCache]: Analyzing trace with hash 289215473, now seen corresponding path program 1 times [2020-10-12 19:39:05,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:39:05,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737199298] [2020-10-12 19:39:05,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:39:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:39:06,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:06,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:06,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:06,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:06,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:06,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:07,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:07,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:10,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:39:10,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 19:39:10,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:39:10,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:39:10,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:39:10,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:39:10,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 19:39:10,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 19:39:10,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 19:39:11,285 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:39:11,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:39:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:39:11,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:11,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:39:11,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:39:11,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:39:11,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:39:11,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:39:11,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:39:11,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:39:11,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:39:11,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:39:11,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:39:11,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737199298] [2020-10-12 19:39:11,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:39:11,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:39:11,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842746492] [2020-10-12 19:39:11,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:39:11,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:39:11,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:39:11,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:39:11,362 INFO L87 Difference]: Start difference. First operand 155 states. Second operand 7 states. [2020-10-12 19:39:11,602 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-12 19:39:13,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:39:13,040 INFO L93 Difference]: Finished difference Result 779 states and 1253 transitions. [2020-10-12 19:39:13,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:39:13,042 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 80 [2020-10-12 19:39:13,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:39:13,063 INFO L225 Difference]: With dead ends: 779 [2020-10-12 19:39:13,063 INFO L226 Difference]: Without dead ends: 642 [2020-10-12 19:39:13,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:39:13,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-10-12 19:39:13,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 317. [2020-10-12 19:39:13,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-10-12 19:39:13,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 463 transitions. [2020-10-12 19:39:13,147 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 463 transitions. Word has length 80 [2020-10-12 19:39:13,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:39:13,148 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 463 transitions. [2020-10-12 19:39:13,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:39:13,148 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 463 transitions. [2020-10-12 19:39:13,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 19:39:13,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:39:13,152 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] [2020-10-12 19:39:13,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:39:13,152 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:39:13,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:39:13,153 INFO L82 PathProgramCache]: Analyzing trace with hash -778747246, now seen corresponding path program 1 times [2020-10-12 19:39:13,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:39:13,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415466253] [2020-10-12 19:39:13,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:39:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:39:13,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:13,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:13,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:13,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:13,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:14,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:14,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:16,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:16,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:16,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:18,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:39:18,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 19:39:18,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:39:18,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 19:39:18,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:39:18,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:39:18,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 19:39:18,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 19:39:18,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:39:18,408 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:39:18,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:39:18,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:39:18,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:18,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:39:18,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:39:18,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:39:18,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:39:18,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:39:18,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:39:18,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:39:18,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:39:18,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:39:18,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:39:18,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415466253] [2020-10-12 19:39:18,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:39:18,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:39:18,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640664865] [2020-10-12 19:39:18,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:39:18,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:39:18,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:39:18,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:39:18,457 INFO L87 Difference]: Start difference. First operand 317 states and 463 transitions. Second operand 7 states. [2020-10-12 19:39:18,660 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-12 19:39:19,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:39:19,815 INFO L93 Difference]: Finished difference Result 1572 states and 2428 transitions. [2020-10-12 19:39:19,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:39:19,816 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 81 [2020-10-12 19:39:19,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:39:19,825 INFO L225 Difference]: With dead ends: 1572 [2020-10-12 19:39:19,825 INFO L226 Difference]: Without dead ends: 1407 [2020-10-12 19:39:19,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:39:19,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2020-10-12 19:39:19,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 560. [2020-10-12 19:39:19,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-10-12 19:39:19,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 837 transitions. [2020-10-12 19:39:19,905 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 837 transitions. Word has length 81 [2020-10-12 19:39:19,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:39:19,905 INFO L479 AbstractCegarLoop]: Abstraction has 560 states and 837 transitions. [2020-10-12 19:39:19,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:39:19,906 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 837 transitions. [2020-10-12 19:39:19,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 19:39:19,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:39:19,910 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] [2020-10-12 19:39:19,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:39:19,910 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:39:19,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:39:19,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1038427297, now seen corresponding path program 1 times [2020-10-12 19:39:19,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:39:19,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16575095] [2020-10-12 19:39:19,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:39:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:39:19,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:19,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:20,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:20,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:20,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:20,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:20,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:20,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:20,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:21,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:24,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:39:24,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 19:39:24,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:39:24,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 19:39:24,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:39:24,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:39:24,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 19:39:24,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 19:39:24,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:39:25,173 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:39:25,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:39:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:39:25,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:25,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:39:25,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:39:25,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:39:25,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:39:25,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:39:25,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:39:25,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:39:25,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:39:25,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:39:25,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:39:25,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16575095] [2020-10-12 19:39:25,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:39:25,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:39:25,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888621334] [2020-10-12 19:39:25,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:39:25,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:39:25,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:39:25,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:39:25,214 INFO L87 Difference]: Start difference. First operand 560 states and 837 transitions. Second operand 7 states. [2020-10-12 19:39:25,395 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-12 19:39:26,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:39:26,581 INFO L93 Difference]: Finished difference Result 2281 states and 3543 transitions. [2020-10-12 19:39:26,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:39:26,582 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 81 [2020-10-12 19:39:26,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:39:26,592 INFO L225 Difference]: With dead ends: 2281 [2020-10-12 19:39:26,593 INFO L226 Difference]: Without dead ends: 2000 [2020-10-12 19:39:26,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:39:26,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2000 states. [2020-10-12 19:39:26,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2000 to 712. [2020-10-12 19:39:26,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 712 states. [2020-10-12 19:39:26,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1073 transitions. [2020-10-12 19:39:26,644 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1073 transitions. Word has length 81 [2020-10-12 19:39:26,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:39:26,644 INFO L479 AbstractCegarLoop]: Abstraction has 712 states and 1073 transitions. [2020-10-12 19:39:26,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:39:26,645 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1073 transitions. [2020-10-12 19:39:26,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-12 19:39:26,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:39:26,648 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] [2020-10-12 19:39:26,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:39:26,648 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:39:26,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:39:26,649 INFO L82 PathProgramCache]: Analyzing trace with hash -295179774, now seen corresponding path program 1 times [2020-10-12 19:39:26,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:39:26,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944144854] [2020-10-12 19:39:26,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:39:26,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:39:26,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:26,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:26,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:26,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:27,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:27,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:27,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:27,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:28,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:30,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:30,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:31,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:39:31,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 19:39:31,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:39:31,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:39:31,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:39:31,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:39:31,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:39:31,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 19:39:31,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:39:32,133 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:39:32,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:39:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:39:32,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:32,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:39:32,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:39:32,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:39:32,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:39:32,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:39:32,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:39:32,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:39:32,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:39:32,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:39:32,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:39:32,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944144854] [2020-10-12 19:39:32,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:39:32,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:39:32,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558361310] [2020-10-12 19:39:32,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:39:32,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:39:32,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:39:32,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:39:32,180 INFO L87 Difference]: Start difference. First operand 712 states and 1073 transitions. Second operand 12 states. [2020-10-12 19:39:32,400 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:39:36,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:39:36,350 INFO L93 Difference]: Finished difference Result 5189 states and 8035 transitions. [2020-10-12 19:39:36,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 19:39:36,350 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-10-12 19:39:36,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:39:36,382 INFO L225 Difference]: With dead ends: 5189 [2020-10-12 19:39:36,382 INFO L226 Difference]: Without dead ends: 4774 [2020-10-12 19:39:36,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=250, Invalid=1010, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 19:39:36,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4774 states. [2020-10-12 19:39:36,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4774 to 760. [2020-10-12 19:39:36,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 760 states. [2020-10-12 19:39:36,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1129 transitions. [2020-10-12 19:39:36,542 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1129 transitions. Word has length 82 [2020-10-12 19:39:36,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:39:36,542 INFO L479 AbstractCegarLoop]: Abstraction has 760 states and 1129 transitions. [2020-10-12 19:39:36,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:39:36,542 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1129 transitions. [2020-10-12 19:39:36,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-12 19:39:36,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:39:36,546 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] [2020-10-12 19:39:36,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:39:36,546 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:39:36,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:39:36,547 INFO L82 PathProgramCache]: Analyzing trace with hash 971982818, now seen corresponding path program 1 times [2020-10-12 19:39:36,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:39:36,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133443760] [2020-10-12 19:39:36,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:39:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:39:36,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:36,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:36,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:36,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:36,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:37,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:38,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:38,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:38,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:38,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:40,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:41,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:39:41,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 19:39:41,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:39:41,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:39:41,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:39:41,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:39:41,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:39:41,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 19:39:41,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:39:42,016 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:39:42,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:39:42,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:39:42,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:42,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:39:42,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:39:42,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:39:42,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:39:42,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:39:42,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:39:42,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:39:42,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:39:42,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:39:42,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:39:42,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133443760] [2020-10-12 19:39:42,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:39:42,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:39:42,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945661867] [2020-10-12 19:39:42,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:39:42,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:39:42,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:39:42,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:39:42,101 INFO L87 Difference]: Start difference. First operand 760 states and 1129 transitions. Second operand 12 states. [2020-10-12 19:39:42,441 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-12 19:39:46,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:39:46,255 INFO L93 Difference]: Finished difference Result 5890 states and 9237 transitions. [2020-10-12 19:39:46,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-12 19:39:46,256 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-10-12 19:39:46,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:39:46,282 INFO L225 Difference]: With dead ends: 5890 [2020-10-12 19:39:46,282 INFO L226 Difference]: Without dead ends: 5329 [2020-10-12 19:39:46,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=500, Invalid=2152, Unknown=0, NotChecked=0, Total=2652 [2020-10-12 19:39:46,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5329 states. [2020-10-12 19:39:46,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5329 to 1012. [2020-10-12 19:39:46,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1012 states. [2020-10-12 19:39:46,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1531 transitions. [2020-10-12 19:39:46,441 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1531 transitions. Word has length 82 [2020-10-12 19:39:46,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:39:46,442 INFO L479 AbstractCegarLoop]: Abstraction has 1012 states and 1531 transitions. [2020-10-12 19:39:46,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:39:46,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1531 transitions. [2020-10-12 19:39:46,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-12 19:39:46,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:39:46,447 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] [2020-10-12 19:39:46,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:39:46,447 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:39:46,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:39:46,448 INFO L82 PathProgramCache]: Analyzing trace with hash 360222849, now seen corresponding path program 1 times [2020-10-12 19:39:46,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:39:46,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804772528] [2020-10-12 19:39:46,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:39:46,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:39:46,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:46,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:46,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:46,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:46,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:46,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:47,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:47,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:48,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:48,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:48,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:49,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:51,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:39:51,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 19:39:51,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:39:51,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 19:39:51,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:39:51,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:39:51,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:39:51,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 19:39:51,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:39:52,290 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:39:52,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:39:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:39:52,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:52,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:39:52,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:39:52,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:39:52,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:39:52,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:39:52,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:39:52,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:39:52,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:39:52,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:39:52,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:39:52,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804772528] [2020-10-12 19:39:52,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:39:52,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 19:39:52,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133500000] [2020-10-12 19:39:52,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:39:52,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:39:52,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:39:52,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:39:52,348 INFO L87 Difference]: Start difference. First operand 1012 states and 1531 transitions. Second operand 15 states. [2020-10-12 19:39:52,621 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-12 19:39:53,329 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2020-10-12 19:39:53,494 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2020-10-12 19:39:56,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:39:56,680 INFO L93 Difference]: Finished difference Result 5567 states and 8671 transitions. [2020-10-12 19:39:56,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 19:39:56,681 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 83 [2020-10-12 19:39:56,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:39:56,705 INFO L225 Difference]: With dead ends: 5567 [2020-10-12 19:39:56,705 INFO L226 Difference]: Without dead ends: 4811 [2020-10-12 19:39:56,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=213, Invalid=1047, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 19:39:56,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4811 states. [2020-10-12 19:39:56,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4811 to 1065. [2020-10-12 19:39:56,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1065 states. [2020-10-12 19:39:56,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1595 transitions. [2020-10-12 19:39:56,903 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1595 transitions. Word has length 83 [2020-10-12 19:39:56,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:39:56,903 INFO L479 AbstractCegarLoop]: Abstraction has 1065 states and 1595 transitions. [2020-10-12 19:39:56,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:39:56,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1595 transitions. [2020-10-12 19:39:56,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-12 19:39:56,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:39:56,905 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] [2020-10-12 19:39:56,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:39:56,906 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:39:56,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:39:56,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1459029890, now seen corresponding path program 1 times [2020-10-12 19:39:56,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:39:56,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857282431] [2020-10-12 19:39:56,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:39:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:39:56,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:56,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:57,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:57,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:57,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:57,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:00,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:00,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:00,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:00,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:00,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:00,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:00,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:00,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:00,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:01,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:40:01,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 19:40:01,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:40:01,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:40:01,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:40:01,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:40:01,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:40:01,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 19:40:01,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:40:02,327 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:40:02,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:40:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:40:02,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:02,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:40:02,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:40:02,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:40:02,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:40:02,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:40:02,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:40:02,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:40:02,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:40:02,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:40:02,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:40:02,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857282431] [2020-10-12 19:40:02,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:40:02,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:40:02,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716224260] [2020-10-12 19:40:02,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:40:02,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:40:02,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:40:02,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:40:02,379 INFO L87 Difference]: Start difference. First operand 1065 states and 1595 transitions. Second operand 13 states. [2020-10-12 19:40:02,800 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 154 [2020-10-12 19:40:07,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:40:07,792 INFO L93 Difference]: Finished difference Result 6023 states and 9136 transitions. [2020-10-12 19:40:07,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-12 19:40:07,793 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 83 [2020-10-12 19:40:07,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:40:07,825 INFO L225 Difference]: With dead ends: 6023 [2020-10-12 19:40:07,825 INFO L226 Difference]: Without dead ends: 5226 [2020-10-12 19:40:07,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1026 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=647, Invalid=2433, Unknown=0, NotChecked=0, Total=3080 [2020-10-12 19:40:07,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5226 states. [2020-10-12 19:40:08,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5226 to 875. [2020-10-12 19:40:08,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 875 states. [2020-10-12 19:40:08,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1298 transitions. [2020-10-12 19:40:08,023 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1298 transitions. Word has length 83 [2020-10-12 19:40:08,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:40:08,023 INFO L479 AbstractCegarLoop]: Abstraction has 875 states and 1298 transitions. [2020-10-12 19:40:08,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:40:08,023 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1298 transitions. [2020-10-12 19:40:08,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-12 19:40:08,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:40:08,024 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] [2020-10-12 19:40:08,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:40:08,024 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:40:08,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:40:08,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1610867075, now seen corresponding path program 1 times [2020-10-12 19:40:08,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:40:08,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639748799] [2020-10-12 19:40:08,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:40:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:40:08,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:08,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:08,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:08,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:08,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:08,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:08,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:09,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:09,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:09,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:10,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:13,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:40:13,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 19:40:13,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:40:13,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:40:13,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:40:13,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:40:13,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 19:40:13,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 19:40:13,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:40:13,537 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:40:13,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:40:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:40:13,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:13,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:40:13,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:40:13,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:40:13,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:40:13,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:40:13,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:40:13,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:40:13,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:40:13,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:40:13,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:40:13,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639748799] [2020-10-12 19:40:13,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:40:13,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 19:40:13,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350801496] [2020-10-12 19:40:13,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:40:13,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:40:13,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:40:13,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:40:13,575 INFO L87 Difference]: Start difference. First operand 875 states and 1298 transitions. Second operand 15 states. [2020-10-12 19:40:14,003 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 149 [2020-10-12 19:40:18,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:40:18,049 INFO L93 Difference]: Finished difference Result 4553 states and 6947 transitions. [2020-10-12 19:40:18,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 19:40:18,049 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 84 [2020-10-12 19:40:18,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:40:18,060 INFO L225 Difference]: With dead ends: 4553 [2020-10-12 19:40:18,060 INFO L226 Difference]: Without dead ends: 3874 [2020-10-12 19:40:18,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=294, Invalid=1266, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 19:40:18,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3874 states. [2020-10-12 19:40:18,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3874 to 943. [2020-10-12 19:40:18,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2020-10-12 19:40:18,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1386 transitions. [2020-10-12 19:40:18,236 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1386 transitions. Word has length 84 [2020-10-12 19:40:18,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:40:18,236 INFO L479 AbstractCegarLoop]: Abstraction has 943 states and 1386 transitions. [2020-10-12 19:40:18,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:40:18,236 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1386 transitions. [2020-10-12 19:40:18,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-12 19:40:18,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:40:18,238 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] [2020-10-12 19:40:18,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:40:18,239 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:40:18,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:40:18,239 INFO L82 PathProgramCache]: Analyzing trace with hash -416267399, now seen corresponding path program 1 times [2020-10-12 19:40:18,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:40:18,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338453463] [2020-10-12 19:40:18,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:40:18,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:40:18,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:18,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:18,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:18,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:18,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:18,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:18,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:21,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:21,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:21,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:21,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:21,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:21,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:21,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:23,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:40:23,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 19:40:23,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:40:23,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:40:23,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:40:23,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:40:23,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:40:23,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 19:40:23,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:40:23,665 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:40:23,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:40:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:40:23,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:23,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:40:23,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:40:23,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:40:23,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:40:23,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:40:23,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:40:23,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:40:23,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:40:23,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:40:23,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:40:23,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338453463] [2020-10-12 19:40:23,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:40:23,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:40:23,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343363198] [2020-10-12 19:40:23,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:40:23,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:40:23,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:40:23,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:40:23,700 INFO L87 Difference]: Start difference. First operand 943 states and 1386 transitions. Second operand 12 states. [2020-10-12 19:40:23,928 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 19:40:27,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:40:27,736 INFO L93 Difference]: Finished difference Result 3485 states and 5284 transitions. [2020-10-12 19:40:27,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 19:40:27,737 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-10-12 19:40:27,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:40:27,742 INFO L225 Difference]: With dead ends: 3485 [2020-10-12 19:40:27,742 INFO L226 Difference]: Without dead ends: 2836 [2020-10-12 19:40:27,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=302, Invalid=1180, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 19:40:27,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2836 states. [2020-10-12 19:40:27,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2836 to 943. [2020-10-12 19:40:27,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2020-10-12 19:40:27,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1382 transitions. [2020-10-12 19:40:27,951 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1382 transitions. Word has length 84 [2020-10-12 19:40:27,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:40:27,952 INFO L479 AbstractCegarLoop]: Abstraction has 943 states and 1382 transitions. [2020-10-12 19:40:27,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:40:27,952 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1382 transitions. [2020-10-12 19:40:27,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-12 19:40:27,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:40:27,953 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] [2020-10-12 19:40:27,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:40:27,953 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:40:27,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:40:27,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1711880038, now seen corresponding path program 1 times [2020-10-12 19:40:27,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:40:27,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210906747] [2020-10-12 19:40:27,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:40:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:40:27,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:28,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:28,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:28,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:28,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:28,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:30,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:30,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:30,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:30,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:30,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:30,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:30,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:30,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:30,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:32,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:40:32,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 19:40:32,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:40:32,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:40:32,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:40:32,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 19:40:32,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:40:32,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 19:40:32,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:40:33,420 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:40:33,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:40:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:40:33,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:33,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:40:33,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:40:33,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:40:33,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:40:33,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:40:33,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:40:33,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:40:33,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:40:33,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:40:33,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:40:33,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210906747] [2020-10-12 19:40:33,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:40:33,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 19:40:33,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774419502] [2020-10-12 19:40:33,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 19:40:33,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:40:33,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 19:40:33,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:40:33,467 INFO L87 Difference]: Start difference. First operand 943 states and 1382 transitions. Second operand 16 states. [2020-10-12 19:40:33,941 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 156 [2020-10-12 19:40:36,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:40:36,847 INFO L93 Difference]: Finished difference Result 1380 states and 2061 transitions. [2020-10-12 19:40:36,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 19:40:36,847 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 84 [2020-10-12 19:40:36,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:40:36,849 INFO L225 Difference]: With dead ends: 1380 [2020-10-12 19:40:36,850 INFO L226 Difference]: Without dead ends: 638 [2020-10-12 19:40:36,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=316, Invalid=1244, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 19:40:36,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-10-12 19:40:36,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 447. [2020-10-12 19:40:36,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2020-10-12 19:40:36,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 627 transitions. [2020-10-12 19:40:36,968 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 627 transitions. Word has length 84 [2020-10-12 19:40:36,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:40:36,968 INFO L479 AbstractCegarLoop]: Abstraction has 447 states and 627 transitions. [2020-10-12 19:40:36,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 19:40:36,968 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 627 transitions. [2020-10-12 19:40:36,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-12 19:40:36,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:40:36,969 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] [2020-10-12 19:40:36,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:40:36,970 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:40:36,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:40:36,972 INFO L82 PathProgramCache]: Analyzing trace with hash 199897944, now seen corresponding path program 1 times [2020-10-12 19:40:36,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:40:36,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041927480] [2020-10-12 19:40:36,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:40:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:40:37,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:37,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:37,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:37,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:37,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:37,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:38,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:38,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:38,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:42,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:40:42,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 19:40:42,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:40:42,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:40:42,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:40:42,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:40:42,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:40:42,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 19:40:42,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:40:42,189 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:40:42,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:40:42,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:40:42,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:42,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:40:42,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:40:42,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:40:42,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:40:42,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:40:42,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:40:42,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:40:42,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:40:42,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:40:42,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:40:42,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041927480] [2020-10-12 19:40:42,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:40:42,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:40:42,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566832354] [2020-10-12 19:40:42,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:40:42,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:40:42,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:40:42,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:40:42,213 INFO L87 Difference]: Start difference. First operand 447 states and 627 transitions. Second operand 8 states. [2020-10-12 19:40:42,419 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-12 19:40:44,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:40:44,383 INFO L93 Difference]: Finished difference Result 2923 states and 4501 transitions. [2020-10-12 19:40:44,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:40:44,384 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-10-12 19:40:44,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:40:44,390 INFO L225 Difference]: With dead ends: 2923 [2020-10-12 19:40:44,390 INFO L226 Difference]: Without dead ends: 2689 [2020-10-12 19:40:44,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:40:44,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2020-10-12 19:40:44,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 740. [2020-10-12 19:40:44,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 740 states. [2020-10-12 19:40:44,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1071 transitions. [2020-10-12 19:40:44,657 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1071 transitions. Word has length 84 [2020-10-12 19:40:44,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:40:44,657 INFO L479 AbstractCegarLoop]: Abstraction has 740 states and 1071 transitions. [2020-10-12 19:40:44,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:40:44,658 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1071 transitions. [2020-10-12 19:40:44,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-12 19:40:44,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:40:44,659 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] [2020-10-12 19:40:44,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:40:44,659 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:40:44,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:40:44,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1252746638, now seen corresponding path program 1 times [2020-10-12 19:40:44,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:40:44,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30838501] [2020-10-12 19:40:44,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:40:44,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:40:44,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:44,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:44,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:44,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:45,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:45,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:45,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:49,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:40:49,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 19:40:49,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:40:49,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:40:49,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:40:49,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:40:49,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:40:49,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 19:40:49,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:40:50,013 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:40:50,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:40:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:40:50,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:50,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:40:50,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:40:50,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:40:50,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:40:50,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:40:50,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:40:50,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:40:50,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:40:50,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:40:50,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:40:50,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30838501] [2020-10-12 19:40:50,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:40:50,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:40:50,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706308990] [2020-10-12 19:40:50,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:40:50,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:40:50,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:40:50,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:40:50,042 INFO L87 Difference]: Start difference. First operand 740 states and 1071 transitions. Second operand 10 states. [2020-10-12 19:40:50,222 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-12 19:40:51,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:40:51,540 INFO L93 Difference]: Finished difference Result 1454 states and 2183 transitions. [2020-10-12 19:40:51,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:40:51,541 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-10-12 19:40:51,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:40:51,543 INFO L225 Difference]: With dead ends: 1454 [2020-10-12 19:40:51,543 INFO L226 Difference]: Without dead ends: 976 [2020-10-12 19:40:51,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-12 19:40:51,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2020-10-12 19:40:51,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 740. [2020-10-12 19:40:51,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 740 states. [2020-10-12 19:40:51,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1067 transitions. [2020-10-12 19:40:51,800 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1067 transitions. Word has length 85 [2020-10-12 19:40:51,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:40:51,801 INFO L479 AbstractCegarLoop]: Abstraction has 740 states and 1067 transitions. [2020-10-12 19:40:51,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 19:40:51,801 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1067 transitions. [2020-10-12 19:40:51,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-12 19:40:51,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:40:51,803 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] [2020-10-12 19:40:51,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 19:40:51,803 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:40:51,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:40:51,804 INFO L82 PathProgramCache]: Analyzing trace with hash -453827119, now seen corresponding path program 1 times [2020-10-12 19:40:51,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:40:51,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504981888] [2020-10-12 19:40:51,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:40:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:40:51,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:51,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:51,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:52,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:52,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:52,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:53,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:53,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:54,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:54,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:54,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:56,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:56,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:56,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:40:56,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 19:40:56,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:40:56,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 19:40:56,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:40:56,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:40:56,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:40:56,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 19:40:56,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:40:57,297 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:40:57,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:40:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:40:57,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:57,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:40:57,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:40:57,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:40:57,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:40:57,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:40:57,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:40:57,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:40:57,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:40:57,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:40:57,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:40:57,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504981888] [2020-10-12 19:40:57,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:40:57,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:40:57,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239850266] [2020-10-12 19:40:57,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:40:57,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:40:57,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:40:57,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:40:57,341 INFO L87 Difference]: Start difference. First operand 740 states and 1067 transitions. Second operand 15 states. [2020-10-12 19:40:57,852 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 156 [2020-10-12 19:40:58,957 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-10-12 19:41:04,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:41:04,852 INFO L93 Difference]: Finished difference Result 6302 states and 9493 transitions. [2020-10-12 19:41:04,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-12 19:41:04,853 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 85 [2020-10-12 19:41:04,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:41:04,863 INFO L225 Difference]: With dead ends: 6302 [2020-10-12 19:41:04,863 INFO L226 Difference]: Without dead ends: 5828 [2020-10-12 19:41:04,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=556, Invalid=1994, Unknown=0, NotChecked=0, Total=2550 [2020-10-12 19:41:04,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5828 states. [2020-10-12 19:41:05,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5828 to 826. [2020-10-12 19:41:05,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 826 states. [2020-10-12 19:41:05,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1175 transitions. [2020-10-12 19:41:05,173 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1175 transitions. Word has length 85 [2020-10-12 19:41:05,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:41:05,173 INFO L479 AbstractCegarLoop]: Abstraction has 826 states and 1175 transitions. [2020-10-12 19:41:05,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:41:05,174 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1175 transitions. [2020-10-12 19:41:05,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 19:41:05,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:41:05,175 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] [2020-10-12 19:41:05,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 19:41:05,176 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:41:05,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:41:05,176 INFO L82 PathProgramCache]: Analyzing trace with hash 912030227, now seen corresponding path program 1 times [2020-10-12 19:41:05,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:41:05,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853920037] [2020-10-12 19:41:05,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:41:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:05,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:05,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:05,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:05,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:05,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:05,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:05,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:05,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:06,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:06,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:06,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:09,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:09,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:09,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:10,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:10,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 19:41:10,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:41:10,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:41:10,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:10,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:41:10,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 19:41:10,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 19:41:10,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:10,641 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 49 [2020-10-12 19:41:10,860 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:41:10,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:41:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:10,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:10,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:10,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:41:10,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:41:10,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:41:10,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:10,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:41:10,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:41:10,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:41:10,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:10,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:41:10,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853920037] [2020-10-12 19:41:10,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:41:10,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 19:41:10,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813496893] [2020-10-12 19:41:10,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:41:10,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:41:10,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:41:10,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:41:10,891 INFO L87 Difference]: Start difference. First operand 826 states and 1175 transitions. Second operand 13 states. [2020-10-12 19:41:11,106 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-10-12 19:41:11,613 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 160 [2020-10-12 19:41:12,259 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2020-10-12 19:41:13,459 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2020-10-12 19:41:13,727 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2020-10-12 19:41:16,585 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-10-12 19:41:16,804 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-10-12 19:41:17,030 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2020-10-12 19:41:19,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:41:19,403 INFO L93 Difference]: Finished difference Result 6353 states and 9491 transitions. [2020-10-12 19:41:19,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-12 19:41:19,403 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 86 [2020-10-12 19:41:19,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:41:19,411 INFO L225 Difference]: With dead ends: 6353 [2020-10-12 19:41:19,412 INFO L226 Difference]: Without dead ends: 5813 [2020-10-12 19:41:19,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=373, Invalid=1349, Unknown=0, NotChecked=0, Total=1722 [2020-10-12 19:41:19,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5813 states. [2020-10-12 19:41:19,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5813 to 1411. [2020-10-12 19:41:19,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1411 states. [2020-10-12 19:41:19,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 2049 transitions. [2020-10-12 19:41:19,885 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 2049 transitions. Word has length 86 [2020-10-12 19:41:19,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:41:19,885 INFO L479 AbstractCegarLoop]: Abstraction has 1411 states and 2049 transitions. [2020-10-12 19:41:19,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:41:19,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 2049 transitions. [2020-10-12 19:41:19,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 19:41:19,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:41:19,888 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] [2020-10-12 19:41:19,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 19:41:19,888 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:41:19,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:41:19,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1949605640, now seen corresponding path program 1 times [2020-10-12 19:41:19,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:41:19,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941888241] [2020-10-12 19:41:19,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:41:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:19,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:19,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:19,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:19,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:20,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:20,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:20,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:20,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:21,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:21,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:21,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:24,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:24,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 19:41:24,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:41:24,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:41:24,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:24,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:41:24,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 19:41:24,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 19:41:24,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:25,273 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 37 [2020-10-12 19:41:25,491 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:41:25,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:41:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:25,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:25,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:25,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:41:25,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:41:25,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:41:25,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:25,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:41:25,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:41:25,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:41:25,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:25,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:41:25,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941888241] [2020-10-12 19:41:25,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:41:25,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 19:41:25,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687494782] [2020-10-12 19:41:25,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:41:25,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:41:25,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:41:25,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:41:25,527 INFO L87 Difference]: Start difference. First operand 1411 states and 2049 transitions. Second operand 13 states. [2020-10-12 19:41:25,761 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-12 19:41:26,371 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-12 19:41:34,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:41:34,836 INFO L93 Difference]: Finished difference Result 17303 states and 26232 transitions. [2020-10-12 19:41:34,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 19:41:34,837 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 86 [2020-10-12 19:41:34,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:41:34,853 INFO L225 Difference]: With dead ends: 17303 [2020-10-12 19:41:34,853 INFO L226 Difference]: Without dead ends: 16333 [2020-10-12 19:41:34,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=307, Invalid=1099, Unknown=0, NotChecked=0, Total=1406 [2020-10-12 19:41:34,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16333 states. [2020-10-12 19:41:36,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16333 to 3758. [2020-10-12 19:41:36,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3758 states. [2020-10-12 19:41:36,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3758 states to 3758 states and 5637 transitions. [2020-10-12 19:41:36,495 INFO L78 Accepts]: Start accepts. Automaton has 3758 states and 5637 transitions. Word has length 86 [2020-10-12 19:41:36,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:41:36,495 INFO L479 AbstractCegarLoop]: Abstraction has 3758 states and 5637 transitions. [2020-10-12 19:41:36,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:41:36,496 INFO L276 IsEmpty]: Start isEmpty. Operand 3758 states and 5637 transitions. [2020-10-12 19:41:36,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 19:41:36,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:41:36,499 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] [2020-10-12 19:41:36,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 19:41:36,499 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:41:36,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:41:36,499 INFO L82 PathProgramCache]: Analyzing trace with hash 2016996533, now seen corresponding path program 1 times [2020-10-12 19:41:36,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:41:36,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393960889] [2020-10-12 19:41:36,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:41:36,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:36,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:36,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:36,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:36,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:37,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:37,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:40,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:40,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:41,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:41,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:41,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 19:41:41,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:41:41,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 19:41:41,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:41,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:41:41,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:41:41,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 19:41:41,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:41,945 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:41:41,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:41:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:41,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:41,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:41,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:41:41,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:41:41,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:41:41,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:41,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:41:41,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:41:41,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:41:41,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:41,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:41:41,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393960889] [2020-10-12 19:41:41,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:41:41,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:41:41,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398135037] [2020-10-12 19:41:41,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:41:41,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:41:41,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:41:41,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:41:41,982 INFO L87 Difference]: Start difference. First operand 3758 states and 5637 transitions. Second operand 10 states. [2020-10-12 19:41:42,194 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:41:45,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:41:45,624 INFO L93 Difference]: Finished difference Result 8316 states and 12701 transitions. [2020-10-12 19:41:45,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:41:45,625 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 86 [2020-10-12 19:41:45,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:41:45,630 INFO L225 Difference]: With dead ends: 8316 [2020-10-12 19:41:45,630 INFO L226 Difference]: Without dead ends: 5282 [2020-10-12 19:41:45,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-12 19:41:45,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5282 states. [2020-10-12 19:41:47,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5282 to 3758. [2020-10-12 19:41:47,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3758 states. [2020-10-12 19:41:47,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3758 states to 3758 states and 5605 transitions. [2020-10-12 19:41:47,056 INFO L78 Accepts]: Start accepts. Automaton has 3758 states and 5605 transitions. Word has length 86 [2020-10-12 19:41:47,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:41:47,056 INFO L479 AbstractCegarLoop]: Abstraction has 3758 states and 5605 transitions. [2020-10-12 19:41:47,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 19:41:47,056 INFO L276 IsEmpty]: Start isEmpty. Operand 3758 states and 5605 transitions. [2020-10-12 19:41:47,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 19:41:47,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:41:47,065 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] [2020-10-12 19:41:47,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 19:41:47,065 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:41:47,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:41:47,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1176077716, now seen corresponding path program 1 times [2020-10-12 19:41:47,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:41:47,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086602499] [2020-10-12 19:41:47,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:41:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:47,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:47,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:47,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:47,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:47,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:47,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:49,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:49,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:52,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:52,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 19:41:52,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:41:52,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:41:52,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:52,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:41:52,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:41:52,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 19:41:52,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:52,442 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:41:52,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:41:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:52,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:52,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:52,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:41:52,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:41:52,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:41:52,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:52,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:41:52,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:41:52,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:41:52,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:41:52,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:41:52,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086602499] [2020-10-12 19:41:52,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:41:52,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:41:52,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032167037] [2020-10-12 19:41:52,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:41:52,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:41:52,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:41:52,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:41:52,508 INFO L87 Difference]: Start difference. First operand 3758 states and 5605 transitions. Second operand 8 states. [2020-10-12 19:41:52,875 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-12 19:41:59,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:41:59,874 INFO L93 Difference]: Finished difference Result 19076 states and 29317 transitions. [2020-10-12 19:41:59,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:41:59,875 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 86 [2020-10-12 19:41:59,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:41:59,894 INFO L225 Difference]: With dead ends: 19076 [2020-10-12 19:41:59,894 INFO L226 Difference]: Without dead ends: 16058 [2020-10-12 19:41:59,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:41:59,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16058 states. [2020-10-12 19:42:01,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16058 to 3758. [2020-10-12 19:42:01,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3758 states. [2020-10-12 19:42:01,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3758 states to 3758 states and 5581 transitions. [2020-10-12 19:42:01,393 INFO L78 Accepts]: Start accepts. Automaton has 3758 states and 5581 transitions. Word has length 86 [2020-10-12 19:42:01,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:42:01,393 INFO L479 AbstractCegarLoop]: Abstraction has 3758 states and 5581 transitions. [2020-10-12 19:42:01,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:42:01,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3758 states and 5581 transitions. [2020-10-12 19:42:01,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 19:42:01,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:42:01,395 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] [2020-10-12 19:42:01,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 19:42:01,396 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:42:01,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:42:01,396 INFO L82 PathProgramCache]: Analyzing trace with hash 971085845, now seen corresponding path program 1 times [2020-10-12 19:42:01,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:42:01,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205735977] [2020-10-12 19:42:01,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:42:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:01,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:01,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:01,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:01,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:01,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:01,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:03,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:03,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:03,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:06,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:06,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 19:42:06,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:42:06,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:42:06,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:06,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:42:06,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 19:42:06,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 19:42:06,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:06,604 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:42:06,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:42:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:06,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:06,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:06,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:42:06,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:42:06,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:42:06,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:06,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:42:06,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:42:06,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:42:06,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:06,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:42:06,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205735977] [2020-10-12 19:42:06,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:42:06,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:42:06,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689579427] [2020-10-12 19:42:06,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:42:06,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:42:06,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:42:06,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:42:06,698 INFO L87 Difference]: Start difference. First operand 3758 states and 5581 transitions. Second operand 7 states. [2020-10-12 19:42:06,884 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-12 19:42:14,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:42:14,977 INFO L93 Difference]: Finished difference Result 20430 states and 31037 transitions. [2020-10-12 19:42:14,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:42:14,978 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 86 [2020-10-12 19:42:14,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:42:14,994 INFO L225 Difference]: With dead ends: 20430 [2020-10-12 19:42:14,994 INFO L226 Difference]: Without dead ends: 17097 [2020-10-12 19:42:15,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:42:15,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17097 states. [2020-10-12 19:42:17,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17097 to 7458. [2020-10-12 19:42:17,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7458 states. [2020-10-12 19:42:17,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7458 states to 7458 states and 11144 transitions. [2020-10-12 19:42:17,973 INFO L78 Accepts]: Start accepts. Automaton has 7458 states and 11144 transitions. Word has length 86 [2020-10-12 19:42:17,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:42:17,973 INFO L479 AbstractCegarLoop]: Abstraction has 7458 states and 11144 transitions. [2020-10-12 19:42:17,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:42:17,973 INFO L276 IsEmpty]: Start isEmpty. Operand 7458 states and 11144 transitions. [2020-10-12 19:42:17,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 19:42:17,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:42:17,976 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] [2020-10-12 19:42:17,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 19:42:17,976 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:42:17,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:42:17,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1125195160, now seen corresponding path program 1 times [2020-10-12 19:42:17,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:42:17,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129545961] [2020-10-12 19:42:17,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:42:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:18,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:18,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:18,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:18,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:18,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:18,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:19,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:19,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:19,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:22,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:22,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-12 19:42:22,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:42:22,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:42:22,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:22,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 19:42:22,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:42:22,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 19:42:22,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:23,229 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 28 [2020-10-12 19:42:23,513 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:42:23,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:42:23,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:23,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:23,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:23,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:42:23,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:42:23,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:42:23,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:23,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:42:23,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:42:23,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:42:23,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:23,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:42:23,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129545961] [2020-10-12 19:42:23,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:42:23,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:42:23,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783803908] [2020-10-12 19:42:23,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 19:42:23,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:42:23,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 19:42:23,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:42:23,557 INFO L87 Difference]: Start difference. First operand 7458 states and 11144 transitions. Second operand 14 states. [2020-10-12 19:42:23,769 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 19:42:37,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:42:37,746 INFO L93 Difference]: Finished difference Result 31363 states and 47427 transitions. [2020-10-12 19:42:37,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 19:42:37,746 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 87 [2020-10-12 19:42:37,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:42:37,772 INFO L225 Difference]: With dead ends: 31363 [2020-10-12 19:42:37,772 INFO L226 Difference]: Without dead ends: 26083 [2020-10-12 19:42:37,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=152, Invalid=550, Unknown=0, NotChecked=0, Total=702 [2020-10-12 19:42:37,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26083 states. [2020-10-12 19:42:40,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26083 to 7445. [2020-10-12 19:42:40,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7445 states. [2020-10-12 19:42:40,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7445 states to 7445 states and 11124 transitions. [2020-10-12 19:42:40,813 INFO L78 Accepts]: Start accepts. Automaton has 7445 states and 11124 transitions. Word has length 87 [2020-10-12 19:42:40,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:42:40,814 INFO L479 AbstractCegarLoop]: Abstraction has 7445 states and 11124 transitions. [2020-10-12 19:42:40,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 19:42:40,814 INFO L276 IsEmpty]: Start isEmpty. Operand 7445 states and 11124 transitions. [2020-10-12 19:42:40,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 19:42:40,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:42:40,817 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] [2020-10-12 19:42:40,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 19:42:40,817 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:42:40,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:42:40,817 INFO L82 PathProgramCache]: Analyzing trace with hash -660326892, now seen corresponding path program 1 times [2020-10-12 19:42:40,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:42:40,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327792786] [2020-10-12 19:42:40,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:42:40,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:40,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:40,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:40,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:40,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:41,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:41,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:41,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:41,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:41,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:41,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:41,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:42,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:42,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:42,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:43,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:43,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:43,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:45,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:45,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-12 19:42:45,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:42:45,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:42:45,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:45,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 19:42:45,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:42:45,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 19:42:45,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:46,357 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 29 [2020-10-12 19:42:46,736 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:42:46,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:42:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:46,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:46,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:46,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:42:46,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:42:46,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:42:46,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:46,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:42:46,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:42:46,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:42:46,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:46,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:42:46,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327792786] [2020-10-12 19:42:46,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:42:46,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:42:46,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950355774] [2020-10-12 19:42:46,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 19:42:46,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:42:46,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 19:42:46,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:42:46,798 INFO L87 Difference]: Start difference. First operand 7445 states and 11124 transitions. Second operand 14 states. [2020-10-12 19:42:47,165 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-12 19:42:47,895 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2020-10-12 19:42:48,307 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 81 [2020-10-12 19:42:48,470 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2020-10-12 19:42:48,673 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43