/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 02:56:57,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 02:56:57,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 02:56:57,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 02:56:57,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 02:56:57,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 02:56:57,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 02:56:57,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 02:56:57,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 02:56:57,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 02:56:57,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 02:56:57,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 02:56:57,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 02:56:57,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 02:56:57,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 02:56:57,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 02:56:57,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 02:56:57,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 02:56:57,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 02:56:57,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 02:56:57,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 02:56:57,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 02:56:57,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 02:56:57,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 02:56:57,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 02:56:57,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 02:56:57,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 02:56:57,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 02:56:57,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 02:56:57,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 02:56:57,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 02:56:57,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 02:56:57,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 02:56:57,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 02:56:57,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 02:56:57,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 02:56:57,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 02:56:57,643 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 02:56:57,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 02:56:57,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 02:56:57,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 02:56:57,646 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 [2020-10-15 02:56:57,681 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 02:56:57,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 02:56:57,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 02:56:57,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 02:56:57,684 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 02:56:57,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 02:56:57,685 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 02:56:57,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 02:56:57,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 02:56:57,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 02:56:57,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 02:56:57,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 02:56:57,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 02:56:57,687 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 02:56:57,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 02:56:57,688 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 02:56:57,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 02:56:57,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 02:56:57,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 02:56:57,689 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 02:56:57,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 02:56:57,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:56:57,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 02:56:57,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 02:56:57,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 02:56:57,690 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 02:56:57,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 02:56:57,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 02:56:57,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 02:56:57,691 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 02:56:57,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 02:56:57,995 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 02:56:58,001 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 02:56:58,002 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 02:56:58,003 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 02:56:58,003 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-10-15 02:56:58,062 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07421dae6/e5fa1b7b65044a0e82fe10811611c173/FLAG2fa53af07 [2020-10-15 02:56:58,495 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 02:56:58,496 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-10-15 02:56:58,507 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07421dae6/e5fa1b7b65044a0e82fe10811611c173/FLAG2fa53af07 [2020-10-15 02:56:58,894 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07421dae6/e5fa1b7b65044a0e82fe10811611c173 [2020-10-15 02:56:58,904 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 02:56:58,906 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 02:56:58,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 02:56:58,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 02:56:58,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 02:56:58,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:56:58" (1/1) ... [2020-10-15 02:56:58,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c6b7cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:58, skipping insertion in model container [2020-10-15 02:56:58,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:56:58" (1/1) ... [2020-10-15 02:56:58,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 02:56:58,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 02:56:59,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:56:59,415 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 02:56:59,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:56:59,524 INFO L208 MainTranslator]: Completed translation [2020-10-15 02:56:59,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:59 WrapperNode [2020-10-15 02:56:59,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 02:56:59,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 02:56:59,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 02:56:59,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 02:56:59,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:59" (1/1) ... [2020-10-15 02:56:59,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:59" (1/1) ... [2020-10-15 02:56:59,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:59" (1/1) ... [2020-10-15 02:56:59,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:59" (1/1) ... [2020-10-15 02:56:59,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:59" (1/1) ... [2020-10-15 02:56:59,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:59" (1/1) ... [2020-10-15 02:56:59,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:59" (1/1) ... [2020-10-15 02:56:59,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 02:56:59,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 02:56:59,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 02:56:59,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 02:56:59,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:59" (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 [2020-10-15 02:56:59,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 02:56:59,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 02:56:59,655 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 02:56:59,655 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 02:56:59,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 02:56:59,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 02:56:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 02:56:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 02:56:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 02:56:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 02:56:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 02:56:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 02:56:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 02:56:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 02:56:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 02:56:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 02:56:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 02:56:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 02:56:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 02:56:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 02:57:00,487 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 02:57:00,487 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 02:57:00,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:57:00 BoogieIcfgContainer [2020-10-15 02:57:00,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 02:57:00,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 02:57:00,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 02:57:00,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 02:57:00,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:56:58" (1/3) ... [2020-10-15 02:57:00,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@540c85fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:57:00, skipping insertion in model container [2020-10-15 02:57:00,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:59" (2/3) ... [2020-10-15 02:57:00,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@540c85fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:57:00, skipping insertion in model container [2020-10-15 02:57:00,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:57:00" (3/3) ... [2020-10-15 02:57:00,513 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-10-15 02:57:00,525 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 02:57:00,539 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 02:57:00,552 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 02:57:00,573 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 02:57:00,574 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 02:57:00,574 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 02:57:00,574 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 02:57:00,574 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 02:57:00,574 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 02:57:00,574 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 02:57:00,574 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 02:57:00,595 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states. [2020-10-15 02:57:00,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 02:57:00,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:00,606 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] [2020-10-15 02:57:00,606 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:00,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:00,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1817058804, now seen corresponding path program 1 times [2020-10-15 02:57:00,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:00,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502429773] [2020-10-15 02:57:00,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:01,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:01,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:01,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:01,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:03,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:03,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 02:57:03,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:57:03,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2370 [2020-10-15 02:57:03,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:03,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:03,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:57:03,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 02:57:03,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 02:57:03,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 02:57:03,613 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 02:57:03,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:03,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:03,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:03,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:03,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:03,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 02:57:03,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:03,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:03,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:03,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:03,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:03,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:57:03,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:57:03,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502429773] [2020-10-15 02:57:03,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:03,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 02:57:03,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476512084] [2020-10-15 02:57:03,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 02:57:03,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:03,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 02:57:03,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 02:57:03,688 INFO L87 Difference]: Start difference. First operand 140 states. Second operand 4 states. [2020-10-15 02:57:03,921 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-15 02:57:04,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:04,772 INFO L93 Difference]: Finished difference Result 297 states and 502 transitions. [2020-10-15 02:57:04,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:57:04,774 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-10-15 02:57:04,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:04,789 INFO L225 Difference]: With dead ends: 297 [2020-10-15 02:57:04,789 INFO L226 Difference]: Without dead ends: 207 [2020-10-15 02:57:04,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:57:04,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-15 02:57:04,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2020-10-15 02:57:04,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-15 02:57:04,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 325 transitions. [2020-10-15 02:57:04,864 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 325 transitions. Word has length 61 [2020-10-15 02:57:04,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:04,865 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 325 transitions. [2020-10-15 02:57:04,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 02:57:04,865 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 325 transitions. [2020-10-15 02:57:04,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 02:57:04,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:04,872 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] [2020-10-15 02:57:04,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 02:57:04,872 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:04,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:04,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1189934876, now seen corresponding path program 1 times [2020-10-15 02:57:04,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:04,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231536655] [2020-10-15 02:57:04,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:04,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:04,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:05,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:05,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:05,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:06,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:09,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:09,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-15 02:57:09,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:57:09,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 02:57:09,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:09,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:09,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:57:09,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:57:09,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 02:57:09,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 02:57:10,224 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 02:57:10,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:10,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:10,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:10,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:10,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:10,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 02:57:10,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:10,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:10,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:10,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:10,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:10,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:57:10,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:57:10,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231536655] [2020-10-15 02:57:10,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:10,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:57:10,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711919581] [2020-10-15 02:57:10,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:57:10,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:10,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:57:10,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:57:10,286 INFO L87 Difference]: Start difference. First operand 205 states and 325 transitions. Second operand 5 states. [2020-10-15 02:57:11,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:11,343 INFO L93 Difference]: Finished difference Result 583 states and 928 transitions. [2020-10-15 02:57:11,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:57:11,345 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-15 02:57:11,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:11,354 INFO L225 Difference]: With dead ends: 583 [2020-10-15 02:57:11,358 INFO L226 Difference]: Without dead ends: 391 [2020-10-15 02:57:11,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:57:11,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2020-10-15 02:57:11,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 389. [2020-10-15 02:57:11,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2020-10-15 02:57:11,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 616 transitions. [2020-10-15 02:57:11,501 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 616 transitions. Word has length 63 [2020-10-15 02:57:11,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:11,502 INFO L479 AbstractCegarLoop]: Abstraction has 389 states and 616 transitions. [2020-10-15 02:57:11,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:57:11,502 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 616 transitions. [2020-10-15 02:57:11,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 02:57:11,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:11,506 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] [2020-10-15 02:57:11,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 02:57:11,507 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:11,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:11,507 INFO L82 PathProgramCache]: Analyzing trace with hash 2127268679, now seen corresponding path program 1 times [2020-10-15 02:57:11,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:11,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558008387] [2020-10-15 02:57:11,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:11,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:11,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:11,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:11,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:12,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:14,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:14,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-15 02:57:14,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:57:14,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3063 [2020-10-15 02:57:14,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:14,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:14,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:57:14,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:57:14,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 02:57:14,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:57:14,874 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 02:57:14,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:14,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:14,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:14,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:14,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:14,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:57:14,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:14,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:14,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:14,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:14,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:14,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:57:14,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:57:14,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558008387] [2020-10-15 02:57:14,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:14,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:57:14,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476526846] [2020-10-15 02:57:14,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:57:14,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:14,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:57:14,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:57:14,916 INFO L87 Difference]: Start difference. First operand 389 states and 616 transitions. Second operand 5 states. [2020-10-15 02:57:15,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:15,754 INFO L93 Difference]: Finished difference Result 1020 states and 1648 transitions. [2020-10-15 02:57:15,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:57:15,754 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-15 02:57:15,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:15,759 INFO L225 Difference]: With dead ends: 1020 [2020-10-15 02:57:15,759 INFO L226 Difference]: Without dead ends: 737 [2020-10-15 02:57:15,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:57:15,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2020-10-15 02:57:15,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 735. [2020-10-15 02:57:15,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 735 states. [2020-10-15 02:57:15,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1159 transitions. [2020-10-15 02:57:15,819 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1159 transitions. Word has length 63 [2020-10-15 02:57:15,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:15,820 INFO L479 AbstractCegarLoop]: Abstraction has 735 states and 1159 transitions. [2020-10-15 02:57:15,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:57:15,820 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1159 transitions. [2020-10-15 02:57:15,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-15 02:57:15,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:15,824 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] [2020-10-15 02:57:15,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 02:57:15,824 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:15,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:15,825 INFO L82 PathProgramCache]: Analyzing trace with hash 322403316, now seen corresponding path program 1 times [2020-10-15 02:57:15,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:15,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514649758] [2020-10-15 02:57:15,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:15,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:15,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:15,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:16,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:16,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:17,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:17,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:20,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:20,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:57:20,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 02:57:20,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 02:57:20,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:20,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:20,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:57:20,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:57:20,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 02:57:20,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:57:21,124 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 02:57:21,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:21,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:21,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:21,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:21,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:21,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 02:57:21,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:21,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:21,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:21,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:21,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:21,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:57:21,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:57:21,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514649758] [2020-10-15 02:57:21,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:21,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:57:21,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786035882] [2020-10-15 02:57:21,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:57:21,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:21,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:57:21,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:57:21,165 INFO L87 Difference]: Start difference. First operand 735 states and 1159 transitions. Second operand 5 states. [2020-10-15 02:57:21,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:21,962 INFO L93 Difference]: Finished difference Result 2086 states and 3285 transitions. [2020-10-15 02:57:21,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:57:21,963 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-15 02:57:21,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:21,971 INFO L225 Difference]: With dead ends: 2086 [2020-10-15 02:57:21,971 INFO L226 Difference]: Without dead ends: 1410 [2020-10-15 02:57:21,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:57:21,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2020-10-15 02:57:22,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 1408. [2020-10-15 02:57:22,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1408 states. [2020-10-15 02:57:22,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 2203 transitions. [2020-10-15 02:57:22,074 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 2203 transitions. Word has length 64 [2020-10-15 02:57:22,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:22,076 INFO L479 AbstractCegarLoop]: Abstraction has 1408 states and 2203 transitions. [2020-10-15 02:57:22,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:57:22,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 2203 transitions. [2020-10-15 02:57:22,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-15 02:57:22,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:22,082 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] [2020-10-15 02:57:22,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 02:57:22,083 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:22,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:22,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1572095812, now seen corresponding path program 1 times [2020-10-15 02:57:22,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:22,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885260300] [2020-10-15 02:57:22,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:22,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:22,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:22,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:22,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:22,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:22,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:22,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:24,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:24,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:57:24,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:57:24,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2354 [2020-10-15 02:57:24,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:24,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:24,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:57:24,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:57:24,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 02:57:24,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:57:24,773 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 02:57:24,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:24,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:24,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:24,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:24,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:24,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:57:24,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:24,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:24,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:24,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:24,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:24,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:24,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:57:24,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885260300] [2020-10-15 02:57:24,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:24,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:57:24,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501106110] [2020-10-15 02:57:24,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:57:24,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:24,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:57:24,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:57:24,810 INFO L87 Difference]: Start difference. First operand 1408 states and 2203 transitions. Second operand 5 states. [2020-10-15 02:57:25,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:25,742 INFO L93 Difference]: Finished difference Result 3854 states and 6077 transitions. [2020-10-15 02:57:25,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:57:25,743 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-15 02:57:25,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:25,762 INFO L225 Difference]: With dead ends: 3854 [2020-10-15 02:57:25,762 INFO L226 Difference]: Without dead ends: 2680 [2020-10-15 02:57:25,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:57:25,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2020-10-15 02:57:25,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 2678. [2020-10-15 02:57:25,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2678 states. [2020-10-15 02:57:26,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2678 states to 2678 states and 4147 transitions. [2020-10-15 02:57:26,005 INFO L78 Accepts]: Start accepts. Automaton has 2678 states and 4147 transitions. Word has length 64 [2020-10-15 02:57:26,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:26,006 INFO L479 AbstractCegarLoop]: Abstraction has 2678 states and 4147 transitions. [2020-10-15 02:57:26,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:57:26,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2678 states and 4147 transitions. [2020-10-15 02:57:26,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-15 02:57:26,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:26,013 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] [2020-10-15 02:57:26,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 02:57:26,014 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:26,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:26,014 INFO L82 PathProgramCache]: Analyzing trace with hash -7270665, now seen corresponding path program 1 times [2020-10-15 02:57:26,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:26,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693440672] [2020-10-15 02:57:26,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:26,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:26,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:26,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:26,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:26,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:26,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:29,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:29,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 02:57:29,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:57:29,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3266 [2020-10-15 02:57:29,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:29,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:29,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:57:29,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-15 02:57:29,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 02:57:29,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:29,511 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 02:57:29,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:29,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:29,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:29,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:29,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:29,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 02:57:29,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:29,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:29,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:29,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:29,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:29,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:57:29,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:57:29,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693440672] [2020-10-15 02:57:29,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:29,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 02:57:29,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399221983] [2020-10-15 02:57:29,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 02:57:29,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:29,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 02:57:29,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 02:57:29,556 INFO L87 Difference]: Start difference. First operand 2678 states and 4147 transitions. Second operand 4 states. [2020-10-15 02:57:29,826 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-15 02:57:30,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:30,937 INFO L93 Difference]: Finished difference Result 6506 states and 10533 transitions. [2020-10-15 02:57:30,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:57:30,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-10-15 02:57:30,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:30,962 INFO L225 Difference]: With dead ends: 6506 [2020-10-15 02:57:30,962 INFO L226 Difference]: Without dead ends: 4488 [2020-10-15 02:57:30,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:57:30,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4488 states. [2020-10-15 02:57:31,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4488 to 4486. [2020-10-15 02:57:31,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4486 states. [2020-10-15 02:57:31,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4486 states to 4486 states and 7123 transitions. [2020-10-15 02:57:31,380 INFO L78 Accepts]: Start accepts. Automaton has 4486 states and 7123 transitions. Word has length 65 [2020-10-15 02:57:31,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:31,381 INFO L479 AbstractCegarLoop]: Abstraction has 4486 states and 7123 transitions. [2020-10-15 02:57:31,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 02:57:31,381 INFO L276 IsEmpty]: Start isEmpty. Operand 4486 states and 7123 transitions. [2020-10-15 02:57:31,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 02:57:31,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:31,386 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] [2020-10-15 02:57:31,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 02:57:31,387 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:31,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:31,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1994722692, now seen corresponding path program 1 times [2020-10-15 02:57:31,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:31,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524546028] [2020-10-15 02:57:31,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:31,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:31,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:31,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:31,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:31,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:31,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:32,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:33,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:36,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:36,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 02:57:36,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 02:57:36,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 02:57:36,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:36,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:36,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:57:36,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:57:36,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 02:57:36,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:36,673 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 02:57:36,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:36,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:36,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:36,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:36,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:36,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 02:57:36,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:36,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:36,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:36,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:36,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:36,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:57:36,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:57:36,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524546028] [2020-10-15 02:57:36,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:36,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:57:36,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177392263] [2020-10-15 02:57:36,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:57:36,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:36,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:57:36,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:57:36,721 INFO L87 Difference]: Start difference. First operand 4486 states and 7123 transitions. Second operand 5 states. [2020-10-15 02:57:38,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:38,095 INFO L93 Difference]: Finished difference Result 12366 states and 19907 transitions. [2020-10-15 02:57:38,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:57:38,095 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-10-15 02:57:38,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:38,139 INFO L225 Difference]: With dead ends: 12366 [2020-10-15 02:57:38,139 INFO L226 Difference]: Without dead ends: 8540 [2020-10-15 02:57:38,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:57:38,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8540 states. [2020-10-15 02:57:38,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8540 to 8538. [2020-10-15 02:57:38,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8538 states. [2020-10-15 02:57:38,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8538 states to 8538 states and 13425 transitions. [2020-10-15 02:57:38,911 INFO L78 Accepts]: Start accepts. Automaton has 8538 states and 13425 transitions. Word has length 67 [2020-10-15 02:57:38,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:38,911 INFO L479 AbstractCegarLoop]: Abstraction has 8538 states and 13425 transitions. [2020-10-15 02:57:38,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:57:38,911 INFO L276 IsEmpty]: Start isEmpty. Operand 8538 states and 13425 transitions. [2020-10-15 02:57:38,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 02:57:38,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:38,921 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] [2020-10-15 02:57:38,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 02:57:38,921 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:38,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:38,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1879848622, now seen corresponding path program 1 times [2020-10-15 02:57:38,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:38,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695879431] [2020-10-15 02:57:38,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:38,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:38,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:39,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:39,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:39,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:40,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:43,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:43,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 02:57:43,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:57:43,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 02:57:43,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:43,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:43,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:57:43,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:57:43,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 02:57:43,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:44,195 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 02:57:44,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:44,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:44,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:44,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:44,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:44,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:57:44,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:44,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:44,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:44,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:44,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:44,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:44,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:57:44,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695879431] [2020-10-15 02:57:44,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:44,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:57:44,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409644106] [2020-10-15 02:57:44,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:57:44,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:44,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:57:44,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:57:44,229 INFO L87 Difference]: Start difference. First operand 8538 states and 13425 transitions. Second operand 5 states. [2020-10-15 02:57:45,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:45,961 INFO L93 Difference]: Finished difference Result 24276 states and 38450 transitions. [2020-10-15 02:57:45,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:57:45,962 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-10-15 02:57:45,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:46,022 INFO L225 Difference]: With dead ends: 24276 [2020-10-15 02:57:46,023 INFO L226 Difference]: Without dead ends: 16396 [2020-10-15 02:57:46,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:57:46,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16396 states. [2020-10-15 02:57:47,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16396 to 16394. [2020-10-15 02:57:47,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16394 states. [2020-10-15 02:57:47,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16394 states to 16394 states and 25594 transitions. [2020-10-15 02:57:47,192 INFO L78 Accepts]: Start accepts. Automaton has 16394 states and 25594 transitions. Word has length 67 [2020-10-15 02:57:47,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:47,192 INFO L479 AbstractCegarLoop]: Abstraction has 16394 states and 25594 transitions. [2020-10-15 02:57:47,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:57:47,192 INFO L276 IsEmpty]: Start isEmpty. Operand 16394 states and 25594 transitions. [2020-10-15 02:57:47,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 02:57:47,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:47,211 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] [2020-10-15 02:57:47,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 02:57:47,211 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:47,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:47,212 INFO L82 PathProgramCache]: Analyzing trace with hash 824660448, now seen corresponding path program 1 times [2020-10-15 02:57:47,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:47,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415800670] [2020-10-15 02:57:47,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:47,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:47,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:47,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:47,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:47,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:47,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:50,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:52,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:52,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 02:57:52,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 02:57:52,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 02:57:52,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:52,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:52,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:57:52,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-15 02:57:52,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 02:57:52,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:57:52,574 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 02:57:52,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:52,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:52,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:52,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:52,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:52,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 02:57:52,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:52,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:52,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:52,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:52,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:52,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:57:52,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:57:52,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415800670] [2020-10-15 02:57:52,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:52,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 02:57:52,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875074364] [2020-10-15 02:57:52,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 02:57:52,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:52,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 02:57:52,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 02:57:52,603 INFO L87 Difference]: Start difference. First operand 16394 states and 25594 transitions. Second operand 4 states. [2020-10-15 02:57:52,777 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-15 02:57:55,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:55,386 INFO L93 Difference]: Finished difference Result 40974 states and 65788 transitions. [2020-10-15 02:57:55,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:57:55,387 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-15 02:57:55,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:55,459 INFO L225 Difference]: With dead ends: 40974 [2020-10-15 02:57:55,459 INFO L226 Difference]: Without dead ends: 26892 [2020-10-15 02:57:55,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:57:55,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26892 states. [2020-10-15 02:57:57,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26892 to 26890. [2020-10-15 02:57:57,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26890 states. [2020-10-15 02:57:57,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26890 states to 26890 states and 41466 transitions. [2020-10-15 02:57:57,517 INFO L78 Accepts]: Start accepts. Automaton has 26890 states and 41466 transitions. Word has length 68 [2020-10-15 02:57:57,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:57,517 INFO L479 AbstractCegarLoop]: Abstraction has 26890 states and 41466 transitions. [2020-10-15 02:57:57,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 02:57:57,517 INFO L276 IsEmpty]: Start isEmpty. Operand 26890 states and 41466 transitions. [2020-10-15 02:57:57,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 02:57:57,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:57,537 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] [2020-10-15 02:57:57,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 02:57:57,537 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:57,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:57,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1597765702, now seen corresponding path program 1 times [2020-10-15 02:57:57,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:57,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341073795] [2020-10-15 02:57:57,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:57,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:57,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:57,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:57,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:57,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:57,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:58,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:00,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:02,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:02,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 02:58:02,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 02:58:02,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 02:58:02,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:02,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:02,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:58:02,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 02:58:02,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 02:58:02,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 02:58:02,843 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 02:58:02,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:58:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:02,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:02,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:02,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:58:02,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:58:02,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 02:58:02,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:02,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:02,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:58:02,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:58:02,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:58:02,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:58:02,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:58:02,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341073795] [2020-10-15 02:58:02,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:58:02,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:58:02,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281512813] [2020-10-15 02:58:02,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:58:02,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:58:02,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:58:02,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:58:02,898 INFO L87 Difference]: Start difference. First operand 26890 states and 41466 transitions. Second operand 5 states. [2020-10-15 02:58:05,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:58:05,001 INFO L93 Difference]: Finished difference Result 44067 states and 67793 transitions. [2020-10-15 02:58:05,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:58:05,002 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-15 02:58:05,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:58:05,037 INFO L225 Difference]: With dead ends: 44067 [2020-10-15 02:58:05,037 INFO L226 Difference]: Without dead ends: 17281 [2020-10-15 02:58:05,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:58:05,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17281 states. [2020-10-15 02:58:06,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17281 to 17281. [2020-10-15 02:58:06,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17281 states. [2020-10-15 02:58:06,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17281 states to 17281 states and 26474 transitions. [2020-10-15 02:58:06,590 INFO L78 Accepts]: Start accepts. Automaton has 17281 states and 26474 transitions. Word has length 71 [2020-10-15 02:58:06,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:58:06,590 INFO L479 AbstractCegarLoop]: Abstraction has 17281 states and 26474 transitions. [2020-10-15 02:58:06,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:58:06,591 INFO L276 IsEmpty]: Start isEmpty. Operand 17281 states and 26474 transitions. [2020-10-15 02:58:06,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 02:58:06,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:58:06,601 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] [2020-10-15 02:58:06,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 02:58:06,601 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:58:06,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:58:06,602 INFO L82 PathProgramCache]: Analyzing trace with hash -89026277, now seen corresponding path program 1 times [2020-10-15 02:58:06,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:58:06,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903977008] [2020-10-15 02:58:06,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:58:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:06,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:06,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:06,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:06,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:06,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:11,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:11,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:11,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 02:58:11,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:58:11,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 02:58:11,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:11,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:11,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:58:11,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 02:58:11,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 02:58:11,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:58:11,882 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 02:58:11,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:58:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:11,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:11,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:11,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:58:11,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:58:11,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-15 02:58:11,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:11,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:11,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:58:11,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:58:11,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:58:11,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 02:58:11,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:58:11,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903977008] [2020-10-15 02:58:11,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:58:11,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 02:58:11,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373165238] [2020-10-15 02:58:11,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 02:58:11,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:58:11,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 02:58:11,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 02:58:11,951 INFO L87 Difference]: Start difference. First operand 17281 states and 26474 transitions. Second operand 8 states. [2020-10-15 02:58:12,251 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 02:58:16,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:58:16,225 INFO L93 Difference]: Finished difference Result 42921 states and 66160 transitions. [2020-10-15 02:58:16,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 02:58:16,226 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2020-10-15 02:58:16,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:58:16,276 INFO L225 Difference]: With dead ends: 42921 [2020-10-15 02:58:16,276 INFO L226 Difference]: Without dead ends: 29155 [2020-10-15 02:58:16,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-15 02:58:16,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29155 states. [2020-10-15 02:58:17,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29155 to 18209. [2020-10-15 02:58:17,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18209 states. [2020-10-15 02:58:17,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18209 states to 18209 states and 27514 transitions. [2020-10-15 02:58:17,858 INFO L78 Accepts]: Start accepts. Automaton has 18209 states and 27514 transitions. Word has length 71 [2020-10-15 02:58:17,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:58:17,859 INFO L479 AbstractCegarLoop]: Abstraction has 18209 states and 27514 transitions. [2020-10-15 02:58:17,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 02:58:17,859 INFO L276 IsEmpty]: Start isEmpty. Operand 18209 states and 27514 transitions. [2020-10-15 02:58:17,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 02:58:17,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:58:17,866 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] [2020-10-15 02:58:17,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 02:58:17,867 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:58:17,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:58:17,867 INFO L82 PathProgramCache]: Analyzing trace with hash 871908610, now seen corresponding path program 1 times [2020-10-15 02:58:17,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:58:17,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003282910] [2020-10-15 02:58:17,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:58:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:17,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:17,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:17,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:17,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:18,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:20,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:20,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 02:58:20,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:58:20,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3055 [2020-10-15 02:58:20,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:20,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:20,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:58:20,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-15 02:58:20,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 02:58:20,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:58:21,148 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 02:58:21,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:58:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:21,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:21,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:21,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:58:21,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:58:21,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 02:58:21,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:21,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:21,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:58:21,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:58:21,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:58:21,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:58:21,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:58:21,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003282910] [2020-10-15 02:58:21,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:58:21,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 02:58:21,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739254197] [2020-10-15 02:58:21,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 02:58:21,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:58:21,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 02:58:21,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:58:21,200 INFO L87 Difference]: Start difference. First operand 18209 states and 27514 transitions. Second operand 6 states. [2020-10-15 02:58:21,464 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 02:58:27,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:58:27,699 INFO L93 Difference]: Finished difference Result 89813 states and 139352 transitions. [2020-10-15 02:58:27,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 02:58:27,700 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-15 02:58:27,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:58:27,802 INFO L225 Difference]: With dead ends: 89813 [2020-10-15 02:58:27,802 INFO L226 Difference]: Without dead ends: 73987 [2020-10-15 02:58:27,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 02:58:27,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73987 states. [2020-10-15 02:58:31,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73987 to 33545. [2020-10-15 02:58:31,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33545 states. [2020-10-15 02:58:31,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33545 states to 33545 states and 50994 transitions. [2020-10-15 02:58:31,970 INFO L78 Accepts]: Start accepts. Automaton has 33545 states and 50994 transitions. Word has length 71 [2020-10-15 02:58:31,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:58:31,970 INFO L479 AbstractCegarLoop]: Abstraction has 33545 states and 50994 transitions. [2020-10-15 02:58:31,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 02:58:31,970 INFO L276 IsEmpty]: Start isEmpty. Operand 33545 states and 50994 transitions. [2020-10-15 02:58:31,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 02:58:31,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:58:31,986 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] [2020-10-15 02:58:31,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 02:58:31,987 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:58:31,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:58:31,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1197752670, now seen corresponding path program 1 times [2020-10-15 02:58:31,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:58:31,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546055128] [2020-10-15 02:58:31,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:58:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:32,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:32,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:32,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:32,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:32,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:32,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:35,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:35,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 02:58:35,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:58:35,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3773 [2020-10-15 02:58:35,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:35,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:35,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:58:35,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-15 02:58:35,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 02:58:35,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:58:35,952 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 02:58:35,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:58:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:35,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:35,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:35,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:58:35,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:58:35,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:58:35,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:35,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:35,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:58:35,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:58:35,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:58:35,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:58:35,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:58:35,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546055128] [2020-10-15 02:58:35,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:58:35,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:58:35,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503778157] [2020-10-15 02:58:35,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:58:35,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:58:35,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:58:35,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:58:35,972 INFO L87 Difference]: Start difference. First operand 33545 states and 50994 transitions. Second operand 5 states. [2020-10-15 02:58:36,175 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-15 02:58:44,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:58:44,063 INFO L93 Difference]: Finished difference Result 120135 states and 184637 transitions. [2020-10-15 02:58:44,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 02:58:44,063 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-15 02:58:44,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:58:44,180 INFO L225 Difference]: With dead ends: 120135 [2020-10-15 02:58:44,181 INFO L226 Difference]: Without dead ends: 89125 [2020-10-15 02:58:44,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:58:44,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89125 states. [2020-10-15 02:58:51,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89125 to 61129. [2020-10-15 02:58:51,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61129 states. [2020-10-15 02:58:51,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61129 states to 61129 states and 92874 transitions. [2020-10-15 02:58:51,132 INFO L78 Accepts]: Start accepts. Automaton has 61129 states and 92874 transitions. Word has length 72 [2020-10-15 02:58:51,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:58:51,133 INFO L479 AbstractCegarLoop]: Abstraction has 61129 states and 92874 transitions. [2020-10-15 02:58:51,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:58:51,133 INFO L276 IsEmpty]: Start isEmpty. Operand 61129 states and 92874 transitions. [2020-10-15 02:58:51,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 02:58:51,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:58:51,149 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] [2020-10-15 02:58:51,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 02:58:51,150 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:58:51,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:58:51,150 INFO L82 PathProgramCache]: Analyzing trace with hash 69546411, now seen corresponding path program 1 times [2020-10-15 02:58:51,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:58:51,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505680542] [2020-10-15 02:58:51,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:58:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:51,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:51,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:51,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:51,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:51,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:52,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:55,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:55,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 02:58:55,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:58:55,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4515 [2020-10-15 02:58:55,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:55,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:55,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:58:55,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-15 02:58:55,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 02:58:55,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:58:55,925 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 02:58:55,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:58:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:55,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:55,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:55,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:58:55,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:58:55,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 02:58:55,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:55,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:55,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:58:55,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:58:55,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:58:55,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:58:55,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:58:55,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505680542] [2020-10-15 02:58:55,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:58:55,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:58:55,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650414224] [2020-10-15 02:58:55,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:58:55,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:58:55,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:58:55,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:58:55,952 INFO L87 Difference]: Start difference. First operand 61129 states and 92874 transitions. Second operand 5 states. [2020-10-15 02:58:56,164 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-15 02:59:09,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:59:09,519 INFO L93 Difference]: Finished difference Result 151247 states and 232365 transitions. [2020-10-15 02:59:09,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 02:59:09,520 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-15 02:59:09,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:59:09,691 INFO L225 Difference]: With dead ends: 151247 [2020-10-15 02:59:09,691 INFO L226 Difference]: Without dead ends: 118349 [2020-10-15 02:59:09,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:59:09,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118349 states. [2020-10-15 02:59:18,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118349 to 93385. [2020-10-15 02:59:18,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93385 states. [2020-10-15 02:59:18,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93385 states to 93385 states and 141802 transitions. [2020-10-15 02:59:18,795 INFO L78 Accepts]: Start accepts. Automaton has 93385 states and 141802 transitions. Word has length 72 [2020-10-15 02:59:18,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:59:18,795 INFO L479 AbstractCegarLoop]: Abstraction has 93385 states and 141802 transitions. [2020-10-15 02:59:18,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:59:18,796 INFO L276 IsEmpty]: Start isEmpty. Operand 93385 states and 141802 transitions. [2020-10-15 02:59:18,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 02:59:18,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:59:18,810 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] [2020-10-15 02:59:18,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 02:59:18,810 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:59:18,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:59:18,810 INFO L82 PathProgramCache]: Analyzing trace with hash -2135368009, now seen corresponding path program 1 times [2020-10-15 02:59:18,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:59:18,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809923736] [2020-10-15 02:59:18,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:59:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:59:18,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:18,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:18,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:18,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:18,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:20,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:23,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:59:23,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 02:59:23,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:59:23,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 02:59:23,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:59:23,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:59:23,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:59:23,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-15 02:59:23,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 02:59:23,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:59:24,074 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 02:59:24,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:59:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:59:24,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:24,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:59:24,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:59:24,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:59:24,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:59:24,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:59:24,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:59:24,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:59:24,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:59:24,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:59:24,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:59:24,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:59:24,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809923736] [2020-10-15 02:59:24,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:59:24,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:59:24,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605102370] [2020-10-15 02:59:24,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:59:24,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:59:24,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:59:24,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:59:24,101 INFO L87 Difference]: Start difference. First operand 93385 states and 141802 transitions. Second operand 5 states. [2020-10-15 02:59:24,333 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-15 02:59:45,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:59:45,330 INFO L93 Difference]: Finished difference Result 230199 states and 350937 transitions. [2020-10-15 02:59:45,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 02:59:45,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-15 02:59:45,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:59:45,598 INFO L225 Difference]: With dead ends: 230199 [2020-10-15 02:59:45,598 INFO L226 Difference]: Without dead ends: 182637 [2020-10-15 02:59:45,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:59:45,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182637 states. [2020-10-15 03:00:06,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182637 to 163009. [2020-10-15 03:00:06,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163009 states. [2020-10-15 03:00:06,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163009 states to 163009 states and 246318 transitions. [2020-10-15 03:00:06,935 INFO L78 Accepts]: Start accepts. Automaton has 163009 states and 246318 transitions. Word has length 72 [2020-10-15 03:00:06,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:00:06,935 INFO L479 AbstractCegarLoop]: Abstraction has 163009 states and 246318 transitions. [2020-10-15 03:00:06,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:00:06,935 INFO L276 IsEmpty]: Start isEmpty. Operand 163009 states and 246318 transitions. [2020-10-15 03:00:06,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:00:06,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:00:06,944 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] [2020-10-15 03:00:06,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:00:06,944 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:00:06,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:00:06,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1130051244, now seen corresponding path program 1 times [2020-10-15 03:00:06,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:00:06,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429614703] [2020-10-15 03:00:06,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:00:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:00:06,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:07,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:07,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:07,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:07,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:07,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:07,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:07,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:11,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:00:11,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:00:11,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:00:11,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:00:11,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:00:11,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:00:11,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:00:11,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:00:11,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 03:00:11,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:00:12,241 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:00:12,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:00:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:00:12,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:00:12,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:00:12,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:00:12,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:00:12,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-15 03:00:12,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:00:12,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:00:12,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:00:12,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:00:12,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:00:12,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:00:12,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:00:12,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429614703] [2020-10-15 03:00:12,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:00:12,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:00:12,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841430765] [2020-10-15 03:00:12,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:00:12,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:00:12,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:00:12,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:00:12,310 INFO L87 Difference]: Start difference. First operand 163009 states and 246318 transitions. Second operand 8 states. [2020-10-15 03:00:12,523 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-15 03:00:40,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:00:40,010 INFO L93 Difference]: Finished difference Result 356089 states and 536536 transitions. [2020-10-15 03:00:40,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:00:40,011 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 72 [2020-10-15 03:00:40,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:00:40,399 INFO L225 Difference]: With dead ends: 356089 [2020-10-15 03:00:40,399 INFO L226 Difference]: Without dead ends: 216195 [2020-10-15 03:00:40,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:00:40,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216195 states.