/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=DEEPEST --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 language data_model -i ../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:11:21,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:11:21,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:11:21,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:11:21,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:11:21,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:11:21,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:11:21,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:11:21,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:11:21,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:11:21,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:11:21,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:11:21,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:11:21,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:11:21,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:11:21,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:11:21,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:11:21,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:11:21,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:11:21,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:11:21,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:11:21,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:11:21,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:11:21,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:11:21,615 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:11:21,616 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:11:21,616 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:11:21,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:11:21,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:11:21,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:11:21,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:11:21,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:11:21,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:11:21,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:11:21,628 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:11:21,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:11:21,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:11:21,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:11:21,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:11:21,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:11:21,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:11:21,638 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 [2020-10-27 14:11:21,689 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:11:21,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:11:21,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:11:21,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:11:21,694 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:11:21,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:11:21,694 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:11:21,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:11:21,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:11:21,695 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:11:21,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:11:21,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:11:21,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:11:21,696 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:11:21,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:11:21,697 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:11:21,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:11:21,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:11:21,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:11:21,698 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:11:21,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:11:21,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:11:21,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:11:21,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:11:21,699 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:11:21,699 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:11:21,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:11:21,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:11:21,699 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:11:21,700 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:11:22,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:11:22,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:11:22,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:11:22,133 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:11:22,133 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:11:22,135 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2020-10-27 14:11:22,221 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b4f7288c/00f93db2695546ef9f42443685145c3b/FLAG962944fe2 [2020-10-27 14:11:22,905 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:11:22,906 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2020-10-27 14:11:22,915 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b4f7288c/00f93db2695546ef9f42443685145c3b/FLAG962944fe2 [2020-10-27 14:11:23,247 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b4f7288c/00f93db2695546ef9f42443685145c3b [2020-10-27 14:11:23,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:11:23,260 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:11:23,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:11:23,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:11:23,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:11:23,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:11:23" (1/1) ... [2020-10-27 14:11:23,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45a88475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:23, skipping insertion in model container [2020-10-27 14:11:23,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:11:23" (1/1) ... [2020-10-27 14:11:23,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:11:23,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:11:23,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:11:23,503 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:11:23,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:11:23,580 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:11:23,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:23 WrapperNode [2020-10-27 14:11:23,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:11:23,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:11:23,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:11:23,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:11:23,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:23" (1/1) ... [2020-10-27 14:11:23,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:23" (1/1) ... [2020-10-27 14:11:23,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:23" (1/1) ... [2020-10-27 14:11:23,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:23" (1/1) ... [2020-10-27 14:11:23,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:23" (1/1) ... [2020-10-27 14:11:23,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:23" (1/1) ... [2020-10-27 14:11:23,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:23" (1/1) ... [2020-10-27 14:11:23,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:11:23,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:11:23,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:11:23,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:11:23,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:23" (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 [2020-10-27 14:11:23,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:11:23,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:11:23,755 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:11:23,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:11:23,756 INFO L138 BoogieDeclarations]: Found implementation of procedure insert [2020-10-27 14:11:23,756 INFO L138 BoogieDeclarations]: Found implementation of procedure elem_exists [2020-10-27 14:11:23,756 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:11:23,756 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:11:23,756 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:11:23,756 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 14:11:23,757 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 14:11:23,757 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:11:23,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:11:23,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:11:23,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:11:23,758 INFO L130 BoogieDeclarations]: Found specification of procedure insert [2020-10-27 14:11:23,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:11:23,758 INFO L130 BoogieDeclarations]: Found specification of procedure elem_exists [2020-10-27 14:11:23,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:11:23,758 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:11:23,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:11:23,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:11:23,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:11:23,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:11:24,389 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:11:24,390 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-27 14:11:24,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:11:24 BoogieIcfgContainer [2020-10-27 14:11:24,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:11:24,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:11:24,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:11:24,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:11:24,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:11:23" (1/3) ... [2020-10-27 14:11:24,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c223c22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:11:24, skipping insertion in model container [2020-10-27 14:11:24,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:11:23" (2/3) ... [2020-10-27 14:11:24,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c223c22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:11:24, skipping insertion in model container [2020-10-27 14:11:24,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:11:24" (3/3) ... [2020-10-27 14:11:24,407 INFO L111 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2020-10-27 14:11:24,421 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:11:24,426 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:11:24,441 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:11:24,488 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:11:24,488 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:11:24,488 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:11:24,488 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:11:24,489 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:11:24,489 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:11:24,489 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:11:24,489 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:11:24,515 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-10-27 14:11:24,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 14:11:24,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:11:24,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:11:24,524 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:11:24,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:11:24,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1391341864, now seen corresponding path program 1 times [2020-10-27 14:11:24,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:11:24,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34724710] [2020-10-27 14:11:24,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:11:24,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:24,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:24,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:25,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:25,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 14:11:25,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:11:25,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-27 14:11:25,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:25,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:11:25,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:11:25,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:11:25,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:11:25,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:11:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:25,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:25,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:25,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:11:25,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:25,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:11:25,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:25,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:25,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:11:25,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:25,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:25,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:11:25,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34724710] [2020-10-27 14:11:25,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:11:25,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 14:11:25,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273847186] [2020-10-27 14:11:25,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:11:25,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:11:25,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:11:25,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:11:25,262 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 5 states. [2020-10-27 14:11:25,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:11:25,633 INFO L93 Difference]: Finished difference Result 132 states and 193 transitions. [2020-10-27 14:11:25,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 14:11:25,635 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-27 14:11:25,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:11:25,645 INFO L225 Difference]: With dead ends: 132 [2020-10-27 14:11:25,645 INFO L226 Difference]: Without dead ends: 64 [2020-10-27 14:11:25,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:11:25,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-27 14:11:25,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2020-10-27 14:11:25,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-27 14:11:25,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2020-10-27 14:11:25,703 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 16 [2020-10-27 14:11:25,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:11:25,703 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2020-10-27 14:11:25,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:11:25,704 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2020-10-27 14:11:25,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-27 14:11:25,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:11:25,707 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] [2020-10-27 14:11:25,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:11:25,707 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:11:25,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:11:25,708 INFO L82 PathProgramCache]: Analyzing trace with hash 877698945, now seen corresponding path program 1 times [2020-10-27 14:11:25,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:11:25,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972789618] [2020-10-27 14:11:25,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:11:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:25,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:25,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:25,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:25,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:26,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:26,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:30,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:30,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 14:11:30,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:11:30,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4615 [2020-10-27 14:11:30,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:30,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:11:30,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:11:30,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:11:30,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:30,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:11:30,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:30,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:30,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:30,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:11:30,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:30,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:11:30,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:30,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:30,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:11:30,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:30,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:30,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 14:11:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:30,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:30,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:30,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:11:30,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:30,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:11:30,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:30,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:30,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 14:11:30,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:30,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:30,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:11:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:30,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:30,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:30,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:11:30,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:30,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:11:30,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:30,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:30,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 14:11:30,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:30,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:30,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:11:30,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972789618] [2020-10-27 14:11:30,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:11:30,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 14:11:30,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087686144] [2020-10-27 14:11:30,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:11:30,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:11:30,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:11:30,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:11:30,455 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand 5 states. [2020-10-27 14:11:30,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:11:30,824 INFO L93 Difference]: Finished difference Result 127 states and 156 transitions. [2020-10-27 14:11:30,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:11:30,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-10-27 14:11:30,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:11:30,827 INFO L225 Difference]: With dead ends: 127 [2020-10-27 14:11:30,827 INFO L226 Difference]: Without dead ends: 80 [2020-10-27 14:11:30,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:11:30,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-27 14:11:30,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 62. [2020-10-27 14:11:30,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-27 14:11:30,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2020-10-27 14:11:30,843 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 37 [2020-10-27 14:11:30,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:11:30,843 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2020-10-27 14:11:30,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:11:30,843 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2020-10-27 14:11:30,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 14:11:30,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:11:30,846 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] [2020-10-27 14:11:30,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:11:30,847 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:11:30,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:11:30,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1014640993, now seen corresponding path program 1 times [2020-10-27 14:11:30,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:11:30,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904664192] [2020-10-27 14:11:30,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:11:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:30,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:30,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:30,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:30,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:30,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:31,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:35,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:35,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 14:11:35,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:11:35,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:11:35,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:35,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:11:35,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:11:35,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:11:35,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:11:35,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:11:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:35,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:35,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:35,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:11:35,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:35,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:11:35,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:35,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:35,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:11:35,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:35,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:35,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 14:11:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:35,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:35,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:35,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:11:35,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:35,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:11:35,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:35,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:35,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 14:11:35,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:35,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:11:36,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 14:11:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:36,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:36,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:36,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:11:36,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:36,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:11:36,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:36,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:36,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 14:11:36,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:36,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:36,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:11:36,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904664192] [2020-10-27 14:11:36,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:11:36,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 14:11:36,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046178208] [2020-10-27 14:11:36,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:11:36,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:11:36,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:11:36,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:11:36,023 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand 6 states. [2020-10-27 14:11:36,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:11:36,462 INFO L93 Difference]: Finished difference Result 150 states and 188 transitions. [2020-10-27 14:11:36,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 14:11:36,463 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-10-27 14:11:36,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:11:36,464 INFO L225 Difference]: With dead ends: 150 [2020-10-27 14:11:36,465 INFO L226 Difference]: Without dead ends: 103 [2020-10-27 14:11:36,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:11:36,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-27 14:11:36,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 79. [2020-10-27 14:11:36,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-27 14:11:36,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 97 transitions. [2020-10-27 14:11:36,481 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 97 transitions. Word has length 39 [2020-10-27 14:11:36,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:11:36,481 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 97 transitions. [2020-10-27 14:11:36,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:11:36,481 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 97 transitions. [2020-10-27 14:11:36,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-27 14:11:36,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:11:36,483 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:11:36,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:11:36,484 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:11:36,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:11:36,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1512812093, now seen corresponding path program 2 times [2020-10-27 14:11:36,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:11:36,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544639168] [2020-10-27 14:11:36,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:11:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:36,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:36,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:36,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:36,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:37,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:37,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:41,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:41,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 14:11:41,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:11:41,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:11:41,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:41,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:11:41,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:11:41,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:11:41,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:41,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:11:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:41,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:41,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:41,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:11:41,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:41,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:11:41,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:41,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:41,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:11:41,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:41,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:41,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 14:11:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:41,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:41,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:41,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:11:41,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:41,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:11:41,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:41,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:41,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 14:11:41,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:41,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:41,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 14:11:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:41,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:41,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:41,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:11:41,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:41,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:11:41,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:41,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:41,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 14:11:41,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:41,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:41,641 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:11:41,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544639168] [2020-10-27 14:11:41,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:11:41,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 14:11:41,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705096805] [2020-10-27 14:11:41,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 14:11:41,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:11:41,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 14:11:41,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:11:41,647 INFO L87 Difference]: Start difference. First operand 79 states and 97 transitions. Second operand 7 states. [2020-10-27 14:11:42,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:11:42,153 INFO L93 Difference]: Finished difference Result 188 states and 240 transitions. [2020-10-27 14:11:42,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 14:11:42,154 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-10-27 14:11:42,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:11:42,156 INFO L225 Difference]: With dead ends: 188 [2020-10-27 14:11:42,156 INFO L226 Difference]: Without dead ends: 126 [2020-10-27 14:11:42,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:11:42,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-27 14:11:42,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 102. [2020-10-27 14:11:42,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-27 14:11:42,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 128 transitions. [2020-10-27 14:11:42,172 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 128 transitions. Word has length 41 [2020-10-27 14:11:42,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:11:42,172 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 128 transitions. [2020-10-27 14:11:42,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 14:11:42,173 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 128 transitions. [2020-10-27 14:11:42,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-27 14:11:42,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:11:42,174 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:11:42,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:11:42,175 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:11:42,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:11:42,175 INFO L82 PathProgramCache]: Analyzing trace with hash -556261797, now seen corresponding path program 3 times [2020-10-27 14:11:42,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:11:42,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042138708] [2020-10-27 14:11:42,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:11:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:42,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:42,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:42,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:42,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:42,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:42,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:47,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:47,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 14:11:47,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:11:47,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:11:47,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:47,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:11:47,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:11:47,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:11:47,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:11:47,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:11:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:47,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:47,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:47,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:11:47,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:47,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:11:47,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:47,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:47,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:11:47,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:47,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:47,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 14:11:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:47,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:47,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:47,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:11:47,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:47,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 14:11:47,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:47,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:47,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 14:11:47,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:47,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:47,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 14:11:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:47,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:47,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:47,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:11:47,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:47,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:11:47,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:47,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:47,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 14:11:47,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:47,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:47,351 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:11:47,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042138708] [2020-10-27 14:11:47,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:11:47,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 14:11:47,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642642814] [2020-10-27 14:11:47,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:11:47,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:11:47,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:11:47,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:11:47,354 INFO L87 Difference]: Start difference. First operand 102 states and 128 transitions. Second operand 8 states. [2020-10-27 14:11:48,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:11:48,080 INFO L93 Difference]: Finished difference Result 232 states and 300 transitions. [2020-10-27 14:11:48,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 14:11:48,082 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-10-27 14:11:48,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:11:48,083 INFO L225 Difference]: With dead ends: 232 [2020-10-27 14:11:48,083 INFO L226 Difference]: Without dead ends: 149 [2020-10-27 14:11:48,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:11:48,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-27 14:11:48,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 125. [2020-10-27 14:11:48,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-27 14:11:48,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 159 transitions. [2020-10-27 14:11:48,101 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 159 transitions. Word has length 43 [2020-10-27 14:11:48,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:11:48,101 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 159 transitions. [2020-10-27 14:11:48,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:11:48,101 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 159 transitions. [2020-10-27 14:11:48,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-27 14:11:48,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:11:48,103 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:11:48,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:11:48,103 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:11:48,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:11:48,104 INFO L82 PathProgramCache]: Analyzing trace with hash -366412039, now seen corresponding path program 4 times [2020-10-27 14:11:48,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:11:48,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812864713] [2020-10-27 14:11:48,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:11:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:48,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:48,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:48,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:48,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:48,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:48,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:53,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:53,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 14:11:53,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:11:53,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:11:53,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:53,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:11:53,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:11:53,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:11:53,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:53,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:11:53,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:53,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:53,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:53,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:11:53,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:53,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:11:53,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:53,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:53,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:11:53,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:53,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:53,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 14:11:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:53,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:53,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:53,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:11:53,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:53,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:11:53,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:53,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:53,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 14:11:53,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:53,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:53,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:11:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:53,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:53,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:53,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:11:53,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:53,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:11:53,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:53,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:53,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 14:11:53,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:53,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:11:53,278 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:11:53,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812864713] [2020-10-27 14:11:53,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:11:53,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:11:53,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247983302] [2020-10-27 14:11:53,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:11:53,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:11:53,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:11:53,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:11:53,282 INFO L87 Difference]: Start difference. First operand 125 states and 159 transitions. Second operand 9 states. [2020-10-27 14:11:53,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:11:53,945 INFO L93 Difference]: Finished difference Result 276 states and 360 transitions. [2020-10-27 14:11:53,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 14:11:53,947 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-10-27 14:11:53,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:11:53,949 INFO L225 Difference]: With dead ends: 276 [2020-10-27 14:11:53,949 INFO L226 Difference]: Without dead ends: 172 [2020-10-27 14:11:53,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:11:53,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-27 14:11:53,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 148. [2020-10-27 14:11:53,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-27 14:11:53,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 190 transitions. [2020-10-27 14:11:53,966 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 190 transitions. Word has length 45 [2020-10-27 14:11:53,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:11:53,966 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 190 transitions. [2020-10-27 14:11:53,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:11:53,966 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 190 transitions. [2020-10-27 14:11:53,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-27 14:11:53,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:11:53,968 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:11:53,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:11:53,968 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:11:53,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:11:53,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1690578967, now seen corresponding path program 5 times [2020-10-27 14:11:53,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:11:53,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320541173] [2020-10-27 14:11:53,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:11:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:53,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:53,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:54,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:54,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:54,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:54,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:58,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:58,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 14:11:58,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:11:58,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:11:58,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:58,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:11:58,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:11:58,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:11:58,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:59,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:11:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:59,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:59,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:59,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:11:59,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:59,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:11:59,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:59,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:59,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:11:59,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:59,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:59,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 14:11:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:59,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:59,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:59,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:11:59,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:59,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:11:59,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:59,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:59,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 14:11:59,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:59,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:59,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 14:11:59,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:11:59,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:11:59,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:11:59,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:11:59,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:11:59,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:11:59,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:11:59,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:11:59,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 14:11:59,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:11:59,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:11:59,162 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:11:59,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320541173] [2020-10-27 14:11:59,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:11:59,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:11:59,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760236989] [2020-10-27 14:11:59,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:11:59,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:11:59,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:11:59,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:11:59,166 INFO L87 Difference]: Start difference. First operand 148 states and 190 transitions. Second operand 10 states. [2020-10-27 14:11:59,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:11:59,956 INFO L93 Difference]: Finished difference Result 320 states and 420 transitions. [2020-10-27 14:11:59,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:11:59,956 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2020-10-27 14:11:59,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:11:59,958 INFO L225 Difference]: With dead ends: 320 [2020-10-27 14:11:59,958 INFO L226 Difference]: Without dead ends: 195 [2020-10-27 14:11:59,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:11:59,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-27 14:11:59,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 171. [2020-10-27 14:11:59,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-27 14:11:59,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 221 transitions. [2020-10-27 14:11:59,980 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 221 transitions. Word has length 47 [2020-10-27 14:11:59,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:11:59,981 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 221 transitions. [2020-10-27 14:11:59,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:11:59,981 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 221 transitions. [2020-10-27 14:11:59,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 14:11:59,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:11:59,982 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:11:59,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:11:59,983 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:11:59,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:11:59,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1520987723, now seen corresponding path program 6 times [2020-10-27 14:11:59,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:11:59,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170585906] [2020-10-27 14:11:59,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:12:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:00,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:00,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:00,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:00,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:00,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:00,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:05,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:05,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 14:12:05,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:12:05,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:12:05,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:05,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:12:05,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:12:05,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:12:05,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 14:12:05,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:12:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:05,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:05,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:05,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:12:05,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:05,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:12:05,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:05,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:05,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:12:05,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:05,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:05,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 14:12:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:05,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:05,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:05,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:12:05,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:05,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:12:05,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:05,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:05,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 14:12:05,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:05,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:05,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 14:12:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:05,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:05,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:05,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:12:05,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:05,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:12:05,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:05,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:05,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 14:12:05,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:05,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:12:05,227 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:12:05,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170585906] [2020-10-27 14:12:05,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:12:05,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:12:05,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714529532] [2020-10-27 14:12:05,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:12:05,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:12:05,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:12:05,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:12:05,230 INFO L87 Difference]: Start difference. First operand 171 states and 221 transitions. Second operand 11 states. [2020-10-27 14:12:06,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:12:06,146 INFO L93 Difference]: Finished difference Result 364 states and 480 transitions. [2020-10-27 14:12:06,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:12:06,147 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-10-27 14:12:06,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:12:06,150 INFO L225 Difference]: With dead ends: 364 [2020-10-27 14:12:06,150 INFO L226 Difference]: Without dead ends: 218 [2020-10-27 14:12:06,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:12:06,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-27 14:12:06,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 194. [2020-10-27 14:12:06,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-27 14:12:06,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 252 transitions. [2020-10-27 14:12:06,171 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 252 transitions. Word has length 49 [2020-10-27 14:12:06,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:12:06,172 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 252 transitions. [2020-10-27 14:12:06,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:12:06,172 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 252 transitions. [2020-10-27 14:12:06,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-27 14:12:06,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:12:06,173 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:12:06,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:12:06,174 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:12:06,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:12:06,174 INFO L82 PathProgramCache]: Analyzing trace with hash 244909011, now seen corresponding path program 7 times [2020-10-27 14:12:06,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:12:06,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209602583] [2020-10-27 14:12:06,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:12:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:06,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:06,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:06,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:06,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:06,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:06,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:11,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:11,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 14:12:11,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:12:11,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:12:11,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:11,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:12:11,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:12:11,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:12:11,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:11,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:12:11,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:11,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:11,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:11,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:12:11,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:11,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:12:11,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:11,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:11,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:12:11,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:11,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:11,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 14:12:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:11,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:11,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:11,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:12:11,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:11,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:12:11,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:11,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:11,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 14:12:11,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:11,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:11,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 14:12:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:11,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:11,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:11,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:12:11,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:11,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:12:11,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:11,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:11,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 14:12:11,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:11,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:11,402 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:12:11,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209602583] [2020-10-27 14:12:11,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:12:11,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:12:11,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969402989] [2020-10-27 14:12:11,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:12:11,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:12:11,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:12:11,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:12:11,404 INFO L87 Difference]: Start difference. First operand 194 states and 252 transitions. Second operand 12 states. [2020-10-27 14:12:12,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:12:12,385 INFO L93 Difference]: Finished difference Result 408 states and 540 transitions. [2020-10-27 14:12:12,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:12:12,389 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-10-27 14:12:12,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:12:12,391 INFO L225 Difference]: With dead ends: 408 [2020-10-27 14:12:12,391 INFO L226 Difference]: Without dead ends: 241 [2020-10-27 14:12:12,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:12:12,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-27 14:12:12,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 217. [2020-10-27 14:12:12,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-27 14:12:12,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 283 transitions. [2020-10-27 14:12:12,419 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 283 transitions. Word has length 51 [2020-10-27 14:12:12,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:12:12,422 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 283 transitions. [2020-10-27 14:12:12,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:12:12,422 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 283 transitions. [2020-10-27 14:12:12,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-27 14:12:12,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:12:12,430 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:12:12,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:12:12,431 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:12:12,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:12:12,431 INFO L82 PathProgramCache]: Analyzing trace with hash 759588465, now seen corresponding path program 8 times [2020-10-27 14:12:12,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:12:12,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094145410] [2020-10-27 14:12:12,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:12:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:12,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:12,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:12,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:12,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:12,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:12,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:17,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:17,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 14:12:17,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:12:17,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 14:12:17,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:17,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:12:17,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:12:17,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:12:17,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:17,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:12:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:17,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:17,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:17,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:12:17,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:17,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:12:17,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:17,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:17,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:12:17,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:17,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:17,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:12:17,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:17,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:17,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:17,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:12:17,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:17,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:12:17,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:17,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:17,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 14:12:17,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:17,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:17,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:12:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:17,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:17,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:17,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:12:17,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:17,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:12:17,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:17,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:17,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 14:12:17,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:17,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:17,705 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:12:17,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094145410] [2020-10-27 14:12:17,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:12:17,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:12:17,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612922409] [2020-10-27 14:12:17,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:12:17,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:12:17,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:12:17,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:12:17,711 INFO L87 Difference]: Start difference. First operand 217 states and 283 transitions. Second operand 13 states. [2020-10-27 14:12:18,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:12:18,853 INFO L93 Difference]: Finished difference Result 452 states and 600 transitions. [2020-10-27 14:12:18,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:12:18,854 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2020-10-27 14:12:18,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:12:18,857 INFO L225 Difference]: With dead ends: 452 [2020-10-27 14:12:18,857 INFO L226 Difference]: Without dead ends: 264 [2020-10-27 14:12:18,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:12:18,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-10-27 14:12:18,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 240. [2020-10-27 14:12:18,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-27 14:12:18,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 314 transitions. [2020-10-27 14:12:18,876 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 314 transitions. Word has length 53 [2020-10-27 14:12:18,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:12:18,877 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 314 transitions. [2020-10-27 14:12:18,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:12:18,877 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 314 transitions. [2020-10-27 14:12:18,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 14:12:18,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:12:18,878 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:12:18,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:12:18,878 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:12:18,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:12:18,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1445304719, now seen corresponding path program 9 times [2020-10-27 14:12:18,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:12:18,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34867594] [2020-10-27 14:12:18,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:12:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:18,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:18,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:18,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:19,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:19,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:19,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:23,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:23,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 14:12:23,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:12:23,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:12:23,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:23,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:12:23,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:12:23,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:12:23,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:24,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:12:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:24,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:24,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:24,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:12:24,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:24,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:12:24,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:24,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:24,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:12:24,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:24,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:24,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 14:12:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:24,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:24,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:24,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:12:24,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:24,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:12:24,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:24,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:24,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 14:12:24,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:24,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:24,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:12:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:24,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:24,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:24,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:12:24,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:24,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:12:24,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:24,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:24,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 14:12:24,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:24,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:24,160 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:12:24,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34867594] [2020-10-27 14:12:24,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:12:24,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:12:24,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379472527] [2020-10-27 14:12:24,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:12:24,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:12:24,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:12:24,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:12:24,162 INFO L87 Difference]: Start difference. First operand 240 states and 314 transitions. Second operand 14 states. [2020-10-27 14:12:25,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:12:25,337 INFO L93 Difference]: Finished difference Result 496 states and 660 transitions. [2020-10-27 14:12:25,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 14:12:25,338 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 55 [2020-10-27 14:12:25,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:12:25,340 INFO L225 Difference]: With dead ends: 496 [2020-10-27 14:12:25,340 INFO L226 Difference]: Without dead ends: 287 [2020-10-27 14:12:25,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:12:25,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-10-27 14:12:25,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 263. [2020-10-27 14:12:25,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-27 14:12:25,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 345 transitions. [2020-10-27 14:12:25,361 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 345 transitions. Word has length 55 [2020-10-27 14:12:25,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:12:25,362 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 345 transitions. [2020-10-27 14:12:25,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:12:25,362 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 345 transitions. [2020-10-27 14:12:25,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 14:12:25,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:12:25,363 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:12:25,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:12:25,363 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:12:25,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:12:25,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1006338771, now seen corresponding path program 10 times [2020-10-27 14:12:25,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:12:25,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058073098] [2020-10-27 14:12:25,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:12:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:25,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:25,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:25,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:25,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:25,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:25,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:30,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:30,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 14:12:30,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:12:30,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:12:30,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:30,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:12:30,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:12:30,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:12:30,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:30,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:12:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:30,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:30,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:30,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:12:30,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:30,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:12:30,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:30,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:30,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:12:30,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:30,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:30,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 14:12:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:30,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:30,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:30,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:12:30,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:30,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:12:30,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:30,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:30,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 14:12:30,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:30,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:30,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:12:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:30,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:30,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:30,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:12:30,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:30,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:12:30,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:30,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:30,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 14:12:30,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:30,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:30,672 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:12:30,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058073098] [2020-10-27 14:12:30,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:12:30,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:12:30,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934728147] [2020-10-27 14:12:30,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:12:30,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:12:30,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:12:30,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:12:30,675 INFO L87 Difference]: Start difference. First operand 263 states and 345 transitions. Second operand 15 states. [2020-10-27 14:12:31,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:12:31,965 INFO L93 Difference]: Finished difference Result 540 states and 720 transitions. [2020-10-27 14:12:31,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 14:12:31,966 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2020-10-27 14:12:31,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:12:31,969 INFO L225 Difference]: With dead ends: 540 [2020-10-27 14:12:31,969 INFO L226 Difference]: Without dead ends: 310 [2020-10-27 14:12:31,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:12:31,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-27 14:12:31,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 286. [2020-10-27 14:12:31,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-10-27 14:12:31,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 376 transitions. [2020-10-27 14:12:31,992 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 376 transitions. Word has length 57 [2020-10-27 14:12:31,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:12:31,993 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 376 transitions. [2020-10-27 14:12:31,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:12:31,993 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 376 transitions. [2020-10-27 14:12:31,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 14:12:31,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:12:31,994 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:12:31,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:12:31,994 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:12:31,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:12:31,995 INFO L82 PathProgramCache]: Analyzing trace with hash 901312843, now seen corresponding path program 11 times [2020-10-27 14:12:31,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:12:31,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286849807] [2020-10-27 14:12:31,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:12:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:32,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:32,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:32,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:32,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:32,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:32,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:37,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:37,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 14:12:37,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:12:37,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:12:37,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:37,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:12:37,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:12:37,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:12:37,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:37,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:12:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:37,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:37,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:37,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:12:37,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:37,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:12:37,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:37,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:37,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:12:37,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:37,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:37,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 14:12:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:37,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:37,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:37,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:12:37,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:37,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:12:37,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:37,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:37,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 14:12:37,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:37,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:12:37,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 14:12:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:37,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:37,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:37,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:12:37,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:37,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:12:37,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:37,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:37,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 14:12:37,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:37,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:12:37,431 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:12:37,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286849807] [2020-10-27 14:12:37,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:12:37,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:12:37,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860139897] [2020-10-27 14:12:37,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:12:37,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:12:37,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:12:37,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:12:37,439 INFO L87 Difference]: Start difference. First operand 286 states and 376 transitions. Second operand 16 states. [2020-10-27 14:12:38,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:12:38,836 INFO L93 Difference]: Finished difference Result 584 states and 780 transitions. [2020-10-27 14:12:38,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 14:12:38,837 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 59 [2020-10-27 14:12:38,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:12:38,840 INFO L225 Difference]: With dead ends: 584 [2020-10-27 14:12:38,840 INFO L226 Difference]: Without dead ends: 333 [2020-10-27 14:12:38,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:12:38,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-10-27 14:12:38,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 309. [2020-10-27 14:12:38,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-10-27 14:12:38,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 407 transitions. [2020-10-27 14:12:38,871 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 407 transitions. Word has length 59 [2020-10-27 14:12:38,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:12:38,873 INFO L481 AbstractCegarLoop]: Abstraction has 309 states and 407 transitions. [2020-10-27 14:12:38,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:12:38,873 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 407 transitions. [2020-10-27 14:12:38,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 14:12:38,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:12:38,874 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:12:38,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:12:38,874 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:12:38,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:12:38,875 INFO L82 PathProgramCache]: Analyzing trace with hash 203478505, now seen corresponding path program 12 times [2020-10-27 14:12:38,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:12:38,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400138111] [2020-10-27 14:12:38,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:12:38,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:38,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:38,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:38,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:38,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:39,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:39,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:43,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:43,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 14:12:43,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:12:43,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:12:43,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:43,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:12:43,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:12:43,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:12:43,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:44,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:12:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:44,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:44,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:44,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:12:44,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:44,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:12:44,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:44,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:44,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:12:44,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:44,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:44,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:12:44,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:44,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:44,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:44,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:12:44,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:44,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:12:44,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:44,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:44,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 14:12:44,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:44,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:44,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:12:44,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:44,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:44,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:44,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:12:44,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:44,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:12:44,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:44,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:44,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 14:12:44,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:44,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:12:44,322 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:12:44,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400138111] [2020-10-27 14:12:44,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:12:44,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:12:44,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676039575] [2020-10-27 14:12:44,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:12:44,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:12:44,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:12:44,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:12:44,324 INFO L87 Difference]: Start difference. First operand 309 states and 407 transitions. Second operand 17 states. [2020-10-27 14:12:45,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:12:45,916 INFO L93 Difference]: Finished difference Result 628 states and 840 transitions. [2020-10-27 14:12:45,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 14:12:45,917 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 61 [2020-10-27 14:12:45,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:12:45,919 INFO L225 Difference]: With dead ends: 628 [2020-10-27 14:12:45,919 INFO L226 Difference]: Without dead ends: 356 [2020-10-27 14:12:45,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:12:45,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-10-27 14:12:45,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 332. [2020-10-27 14:12:45,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-10-27 14:12:45,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 438 transitions. [2020-10-27 14:12:45,946 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 438 transitions. Word has length 61 [2020-10-27 14:12:45,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:12:45,946 INFO L481 AbstractCegarLoop]: Abstraction has 332 states and 438 transitions. [2020-10-27 14:12:45,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:12:45,946 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 438 transitions. [2020-10-27 14:12:45,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 14:12:45,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:12:45,947 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:12:45,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:12:45,947 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:12:45,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:12:45,948 INFO L82 PathProgramCache]: Analyzing trace with hash -400422137, now seen corresponding path program 13 times [2020-10-27 14:12:45,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:12:45,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141862232] [2020-10-27 14:12:45,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:12:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:45,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:45,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:45,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:46,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:46,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:46,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:50,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:50,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 14:12:50,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:12:50,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:12:50,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:50,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:12:50,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:12:50,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:12:50,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:51,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:12:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:51,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:51,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:51,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:12:51,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:51,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:12:51,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:51,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:51,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:12:51,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:51,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:12:51,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:12:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:51,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:51,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:51,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:12:51,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:51,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:12:51,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:51,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:51,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 14:12:51,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:51,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:51,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 14:12:51,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:51,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:51,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:51,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:12:51,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:51,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:12:51,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:51,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:51,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 14:12:51,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:51,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:12:51,468 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:12:51,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141862232] [2020-10-27 14:12:51,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:12:51,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:12:51,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716966601] [2020-10-27 14:12:51,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:12:51,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:12:51,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:12:51,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:12:51,471 INFO L87 Difference]: Start difference. First operand 332 states and 438 transitions. Second operand 18 states. [2020-10-27 14:12:52,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:12:52,913 INFO L93 Difference]: Finished difference Result 672 states and 900 transitions. [2020-10-27 14:12:52,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 14:12:52,914 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 63 [2020-10-27 14:12:52,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:12:52,917 INFO L225 Difference]: With dead ends: 672 [2020-10-27 14:12:52,917 INFO L226 Difference]: Without dead ends: 379 [2020-10-27 14:12:52,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=214, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:12:52,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2020-10-27 14:12:52,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 355. [2020-10-27 14:12:52,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-10-27 14:12:52,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 469 transitions. [2020-10-27 14:12:52,942 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 469 transitions. Word has length 63 [2020-10-27 14:12:52,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:12:52,943 INFO L481 AbstractCegarLoop]: Abstraction has 355 states and 469 transitions. [2020-10-27 14:12:52,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:12:52,943 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 469 transitions. [2020-10-27 14:12:52,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 14:12:52,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:12:52,944 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:12:52,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:12:52,944 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:12:52,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:12:52,945 INFO L82 PathProgramCache]: Analyzing trace with hash -928354139, now seen corresponding path program 14 times [2020-10-27 14:12:52,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:12:52,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865180800] [2020-10-27 14:12:52,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:12:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:52,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:52,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:52,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:53,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:54,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:54,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:57,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:57,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 14:12:57,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:12:57,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:12:57,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:57,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:12:57,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:12:57,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:12:57,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:58,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:12:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:58,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:58,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:58,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:12:58,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:58,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:12:58,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:58,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:58,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:12:58,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:58,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:58,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:12:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:58,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:58,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:58,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:12:58,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:58,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:12:58,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:58,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:58,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 14:12:58,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:58,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:58,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:12:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:58,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:58,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:12:58,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:12:58,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:12:58,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:12:58,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:12:58,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:12:58,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 14:12:58,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:12:58,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:12:58,374 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:12:58,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865180800] [2020-10-27 14:12:58,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:12:58,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:12:58,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530700564] [2020-10-27 14:12:58,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:12:58,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:12:58,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:12:58,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=202, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:12:58,380 INFO L87 Difference]: Start difference. First operand 355 states and 469 transitions. Second operand 19 states. [2020-10-27 14:12:59,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:12:59,813 INFO L93 Difference]: Finished difference Result 716 states and 960 transitions. [2020-10-27 14:12:59,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:12:59,814 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-10-27 14:12:59,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:12:59,817 INFO L225 Difference]: With dead ends: 716 [2020-10-27 14:12:59,817 INFO L226 Difference]: Without dead ends: 402 [2020-10-27 14:12:59,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=144, Invalid=236, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:12:59,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-10-27 14:12:59,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 378. [2020-10-27 14:12:59,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-10-27 14:12:59,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 500 transitions. [2020-10-27 14:12:59,845 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 500 transitions. Word has length 65 [2020-10-27 14:12:59,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:12:59,845 INFO L481 AbstractCegarLoop]: Abstraction has 378 states and 500 transitions. [2020-10-27 14:12:59,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:12:59,845 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 500 transitions. [2020-10-27 14:12:59,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 14:12:59,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:12:59,846 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:12:59,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:12:59,846 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:12:59,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:12:59,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1464867133, now seen corresponding path program 15 times [2020-10-27 14:12:59,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:12:59,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310310909] [2020-10-27 14:12:59,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:12:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:12:59,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:59,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:12:59,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:00,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:00,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:00,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:04,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:04,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 14:13:04,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:13:04,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:13:04,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:04,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:13:04,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:13:04,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:13:04,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:05,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:13:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:05,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:05,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:05,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:13:05,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:13:05,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:13:05,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:05,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:13:05,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:13:05,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:13:05,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:05,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 14:13:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:05,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:05,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:05,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:13:05,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:13:05,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:13:05,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:05,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:13:05,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 14:13:05,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:13:05,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:05,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 14:13:05,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:05,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:05,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:05,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:13:05,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:13:05,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:13:05,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:05,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:13:05,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 14:13:05,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:13:05,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:05,338 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:13:05,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310310909] [2020-10-27 14:13:05,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:13:05,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:13:05,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649323741] [2020-10-27 14:13:05,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:13:05,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:13:05,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:13:05,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=223, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:13:05,340 INFO L87 Difference]: Start difference. First operand 378 states and 500 transitions. Second operand 20 states. [2020-10-27 14:13:06,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:13:06,916 INFO L93 Difference]: Finished difference Result 760 states and 1020 transitions. [2020-10-27 14:13:06,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 14:13:06,917 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 67 [2020-10-27 14:13:06,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:13:06,920 INFO L225 Difference]: With dead ends: 760 [2020-10-27 14:13:06,920 INFO L226 Difference]: Without dead ends: 425 [2020-10-27 14:13:06,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=161, Invalid=259, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:13:06,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-10-27 14:13:06,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 401. [2020-10-27 14:13:06,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-10-27 14:13:06,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 531 transitions. [2020-10-27 14:13:06,948 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 531 transitions. Word has length 67 [2020-10-27 14:13:06,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:13:06,949 INFO L481 AbstractCegarLoop]: Abstraction has 401 states and 531 transitions. [2020-10-27 14:13:06,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:13:06,949 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 531 transitions. [2020-10-27 14:13:06,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 14:13:06,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:13:06,950 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:13:06,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:13:06,950 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:13:06,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:13:06,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1657778847, now seen corresponding path program 16 times [2020-10-27 14:13:06,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:13:06,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900103338] [2020-10-27 14:13:06,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:13:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:06,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:06,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:06,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:07,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:08,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:08,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:11,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:11,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 14:13:11,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:13:11,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:13:11,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:11,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:13:11,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:13:11,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 14:13:11,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:12,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:13:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:12,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:12,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:12,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:13:12,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:13:12,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:13:12,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:12,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:13:12,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:13:12,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:13:12,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:12,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:13:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:12,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:12,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:12,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:13:12,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:13:12,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:13:12,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:12,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:13:12,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 14:13:12,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:13:12,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:12,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:13:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:12,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:12,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:12,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:13:12,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:13:12,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:13:12,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:12,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:13:12,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 14:13:12,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:13:12,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:12,484 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:13:12,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900103338] [2020-10-27 14:13:12,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:13:12,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 14:13:12,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869178365] [2020-10-27 14:13:12,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 14:13:12,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:13:12,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 14:13:12,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=245, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:13:12,487 INFO L87 Difference]: Start difference. First operand 401 states and 531 transitions. Second operand 21 states. [2020-10-27 14:13:14,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:13:14,158 INFO L93 Difference]: Finished difference Result 804 states and 1080 transitions. [2020-10-27 14:13:14,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 14:13:14,159 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 69 [2020-10-27 14:13:14,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:13:14,165 INFO L225 Difference]: With dead ends: 804 [2020-10-27 14:13:14,165 INFO L226 Difference]: Without dead ends: 448 [2020-10-27 14:13:14,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=179, Invalid=283, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:13:14,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-10-27 14:13:14,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 424. [2020-10-27 14:13:14,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2020-10-27 14:13:14,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 562 transitions. [2020-10-27 14:13:14,197 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 562 transitions. Word has length 69 [2020-10-27 14:13:14,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:13:14,197 INFO L481 AbstractCegarLoop]: Abstraction has 424 states and 562 transitions. [2020-10-27 14:13:14,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 14:13:14,198 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 562 transitions. [2020-10-27 14:13:14,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 14:13:14,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:13:14,199 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:13:14,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:13:14,199 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:13:14,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:13:14,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1932625023, now seen corresponding path program 17 times [2020-10-27 14:13:14,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:13:14,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92984906] [2020-10-27 14:13:14,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:13:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:14,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:14,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:14,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:14,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:15,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:15,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:19,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:19,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 14:13:19,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:13:19,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:13:19,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:19,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:13:19,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:13:19,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 14:13:19,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:19,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:13:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:19,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:19,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:19,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:13:19,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:13:19,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:13:19,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:19,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:13:19,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:13:19,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:13:19,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:19,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 14:13:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:19,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:19,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:19,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:13:19,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:13:19,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:13:19,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:19,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:13:19,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 14:13:19,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:13:19,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:19,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 14:13:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:19,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:19,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:19,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:13:19,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:13:19,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:13:19,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:19,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:13:19,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 14:13:19,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:13:19,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:19,806 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:13:19,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92984906] [2020-10-27 14:13:19,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:13:19,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:13:19,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384241082] [2020-10-27 14:13:19,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:13:19,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:13:19,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:13:19,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=268, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:13:19,809 INFO L87 Difference]: Start difference. First operand 424 states and 562 transitions. Second operand 22 states. [2020-10-27 14:13:21,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:13:21,634 INFO L93 Difference]: Finished difference Result 848 states and 1140 transitions. [2020-10-27 14:13:21,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 14:13:21,636 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 71 [2020-10-27 14:13:21,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:13:21,640 INFO L225 Difference]: With dead ends: 848 [2020-10-27 14:13:21,640 INFO L226 Difference]: Without dead ends: 471 [2020-10-27 14:13:21,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:13:21,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-10-27 14:13:21,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 447. [2020-10-27 14:13:21,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2020-10-27 14:13:21,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 593 transitions. [2020-10-27 14:13:21,669 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 593 transitions. Word has length 71 [2020-10-27 14:13:21,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:13:21,669 INFO L481 AbstractCegarLoop]: Abstraction has 447 states and 593 transitions. [2020-10-27 14:13:21,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:13:21,669 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 593 transitions. [2020-10-27 14:13:21,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-27 14:13:21,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:13:21,670 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:13:21,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 14:13:21,671 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:13:21,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:13:21,671 INFO L82 PathProgramCache]: Analyzing trace with hash -842961891, now seen corresponding path program 18 times [2020-10-27 14:13:21,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:13:21,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947054047] [2020-10-27 14:13:21,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:13:21,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:21,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:21,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:21,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:22,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:23,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:23,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:26,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:26,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 14:13:26,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:13:26,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:13:26,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:26,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:13:26,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:13:26,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:13:26,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:27,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:13:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:27,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:27,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:27,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:13:27,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:13:27,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:13:27,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:27,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:13:27,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:13:27,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:13:27,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:27,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:13:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:27,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:27,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:27,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:13:27,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:13:27,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:13:27,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:27,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:13:27,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 14:13:27,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:13:27,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:27,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:13:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:27,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:27,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:27,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:13:27,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:13:27,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:13:27,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:27,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:13:27,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 14:13:27,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:13:27,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:27,298 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:13:27,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947054047] [2020-10-27 14:13:27,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:13:27,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 14:13:27,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477313089] [2020-10-27 14:13:27,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 14:13:27,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:13:27,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 14:13:27,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=292, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:13:27,300 INFO L87 Difference]: Start difference. First operand 447 states and 593 transitions. Second operand 23 states. [2020-10-27 14:13:29,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:13:29,368 INFO L93 Difference]: Finished difference Result 892 states and 1200 transitions. [2020-10-27 14:13:29,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:13:29,369 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 73 [2020-10-27 14:13:29,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:13:29,372 INFO L225 Difference]: With dead ends: 892 [2020-10-27 14:13:29,372 INFO L226 Difference]: Without dead ends: 494 [2020-10-27 14:13:29,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=218, Invalid=334, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:13:29,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2020-10-27 14:13:29,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 470. [2020-10-27 14:13:29,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2020-10-27 14:13:29,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 624 transitions. [2020-10-27 14:13:29,405 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 624 transitions. Word has length 73 [2020-10-27 14:13:29,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:13:29,405 INFO L481 AbstractCegarLoop]: Abstraction has 470 states and 624 transitions. [2020-10-27 14:13:29,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 14:13:29,405 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 624 transitions. [2020-10-27 14:13:29,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-27 14:13:29,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:13:29,406 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:13:29,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 14:13:29,406 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:13:29,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:13:29,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1007295429, now seen corresponding path program 19 times [2020-10-27 14:13:29,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:13:29,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543618952] [2020-10-27 14:13:29,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:13:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:29,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:29,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:29,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:30,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:30,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:30,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:34,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:34,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 14:13:34,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:13:34,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:13:34,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:34,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:13:34,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:13:34,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 14:13:34,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:35,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:13:35,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:35,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:35,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:35,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:13:35,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:13:35,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:13:35,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:35,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:13:35,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:13:35,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:13:35,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:35,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 14:13:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:35,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:35,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:35,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:13:35,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:13:35,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:13:35,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:35,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:13:35,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 14:13:35,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:13:35,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:35,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:13:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:35,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:35,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:35,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:13:35,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:13:35,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:13:35,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:35,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:13:35,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 14:13:35,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:13:35,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:35,103 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:13:35,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543618952] [2020-10-27 14:13:35,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:13:35,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:13:35,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364155176] [2020-10-27 14:13:35,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:13:35,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:13:35,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:13:35,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=317, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:13:35,105 INFO L87 Difference]: Start difference. First operand 470 states and 624 transitions. Second operand 24 states. [2020-10-27 14:13:37,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:13:37,536 INFO L93 Difference]: Finished difference Result 936 states and 1260 transitions. [2020-10-27 14:13:37,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 14:13:37,538 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 75 [2020-10-27 14:13:37,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:13:37,542 INFO L225 Difference]: With dead ends: 936 [2020-10-27 14:13:37,542 INFO L226 Difference]: Without dead ends: 517 [2020-10-27 14:13:37,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=239, Invalid=361, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:13:37,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2020-10-27 14:13:37,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 493. [2020-10-27 14:13:37,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-10-27 14:13:37,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 655 transitions. [2020-10-27 14:13:37,575 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 655 transitions. Word has length 75 [2020-10-27 14:13:37,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:13:37,576 INFO L481 AbstractCegarLoop]: Abstraction has 493 states and 655 transitions. [2020-10-27 14:13:37,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:13:37,576 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 655 transitions. [2020-10-27 14:13:37,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-27 14:13:37,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:13:37,577 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:13:37,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 14:13:37,577 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:13:37,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:13:37,578 INFO L82 PathProgramCache]: Analyzing trace with hash -18035495, now seen corresponding path program 20 times [2020-10-27 14:13:37,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:13:37,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42545450] [2020-10-27 14:13:37,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:13:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:37,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:37,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:37,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:37,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:39,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:39,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:42,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:42,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 14:13:42,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:13:42,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 14:13:42,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:42,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:13:42,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:13:42,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 14:13:42,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:43,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:13:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:43,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:43,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:43,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:13:43,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:13:43,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:13:43,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:43,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:13:43,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:13:43,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:13:43,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:13:43,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:13:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:43,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:43,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:43,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:13:43,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:13:43,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:13:43,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:43,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:13:43,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 14:13:43,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:13:43,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:43,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:13:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:43,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:43,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:43,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:13:43,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:13:43,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:13:43,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:43,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:13:43,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 14:13:43,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:13:43,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:43,329 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:13:43,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42545450] [2020-10-27 14:13:43,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:13:43,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 14:13:43,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705040976] [2020-10-27 14:13:43,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 14:13:43,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:13:43,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 14:13:43,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=343, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:13:43,331 INFO L87 Difference]: Start difference. First operand 493 states and 655 transitions. Second operand 25 states. [2020-10-27 14:13:45,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:13:45,937 INFO L93 Difference]: Finished difference Result 980 states and 1320 transitions. [2020-10-27 14:13:45,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 14:13:45,941 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 77 [2020-10-27 14:13:45,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:13:45,944 INFO L225 Difference]: With dead ends: 980 [2020-10-27 14:13:45,945 INFO L226 Difference]: Without dead ends: 540 [2020-10-27 14:13:45,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=261, Invalid=389, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:13:45,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2020-10-27 14:13:45,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 516. [2020-10-27 14:13:45,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2020-10-27 14:13:45,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 686 transitions. [2020-10-27 14:13:45,980 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 686 transitions. Word has length 77 [2020-10-27 14:13:45,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:13:45,980 INFO L481 AbstractCegarLoop]: Abstraction has 516 states and 686 transitions. [2020-10-27 14:13:45,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 14:13:45,980 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 686 transitions. [2020-10-27 14:13:45,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 14:13:45,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:13:45,981 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:13:45,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 14:13:45,981 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:13:45,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:13:45,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1472988663, now seen corresponding path program 21 times [2020-10-27 14:13:45,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:13:45,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726546455] [2020-10-27 14:13:45,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:13:45,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:45,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:46,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:46,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:46,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:47,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:47,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:51,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:51,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 14:13:51,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:13:51,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 14:13:51,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:51,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:13:51,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:13:51,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 14:13:51,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:51,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:13:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:51,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:51,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:51,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:13:51,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:13:51,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:13:51,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:13:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:13:51,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:13:51,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:51,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 14:13:51,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:51,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:51,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:51,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:13:51,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:13:51,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:13:51,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:51,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:13:51,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 14:13:51,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:13:51,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:51,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 14:13:51,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:51,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:51,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:51,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:13:51,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:13:51,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:13:51,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:51,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:13:51,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 14:13:51,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:13:51,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:13:51,773 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:13:51,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726546455] [2020-10-27 14:13:51,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:13:51,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 14:13:51,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073148271] [2020-10-27 14:13:51,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 14:13:51,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:13:51,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 14:13:51,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=370, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:13:51,775 INFO L87 Difference]: Start difference. First operand 516 states and 686 transitions. Second operand 26 states. [2020-10-27 14:13:54,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:13:54,495 INFO L93 Difference]: Finished difference Result 1024 states and 1380 transitions. [2020-10-27 14:13:54,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 14:13:54,496 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 79 [2020-10-27 14:13:54,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:13:54,500 INFO L225 Difference]: With dead ends: 1024 [2020-10-27 14:13:54,500 INFO L226 Difference]: Without dead ends: 563 [2020-10-27 14:13:54,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=284, Invalid=418, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:13:54,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-10-27 14:13:54,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 539. [2020-10-27 14:13:54,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2020-10-27 14:13:54,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 717 transitions. [2020-10-27 14:13:54,540 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 717 transitions. Word has length 79 [2020-10-27 14:13:54,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:13:54,540 INFO L481 AbstractCegarLoop]: Abstraction has 539 states and 717 transitions. [2020-10-27 14:13:54,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 14:13:54,541 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 717 transitions. [2020-10-27 14:13:54,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 14:13:54,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:13:54,542 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:13:54,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 14:13:54,542 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:13:54,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:13:54,543 INFO L82 PathProgramCache]: Analyzing trace with hash -171872363, now seen corresponding path program 22 times [2020-10-27 14:13:54,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:13:54,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304023139] [2020-10-27 14:13:54,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:13:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:13:54,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:54,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:54,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:55,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:56,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:56,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:13:59,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:13:59,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 14:13:59,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:13:59,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 14:13:59,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:13:59,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:13:59,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:13:59,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 14:13:59,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:00,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:14:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:00,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:00,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:00,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:14:00,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:00,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:14:00,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:00,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:00,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:14:00,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:00,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:00,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:14:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:00,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:00,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:00,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:14:00,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:00,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:14:00,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:00,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:00,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 14:14:00,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:00,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:00,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:14:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:00,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:00,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:00,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:14:00,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:00,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:14:00,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:00,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:00,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 14:14:00,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:00,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:00,416 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:14:00,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304023139] [2020-10-27 14:14:00,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:14:00,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 14:14:00,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368269474] [2020-10-27 14:14:00,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 14:14:00,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:14:00,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 14:14:00,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=398, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:14:00,418 INFO L87 Difference]: Start difference. First operand 539 states and 717 transitions. Second operand 27 states. [2020-10-27 14:14:03,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:14:03,326 INFO L93 Difference]: Finished difference Result 1068 states and 1440 transitions. [2020-10-27 14:14:03,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 14:14:03,328 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 81 [2020-10-27 14:14:03,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:14:03,332 INFO L225 Difference]: With dead ends: 1068 [2020-10-27 14:14:03,332 INFO L226 Difference]: Without dead ends: 586 [2020-10-27 14:14:03,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=308, Invalid=448, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:14:03,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-10-27 14:14:03,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 562. [2020-10-27 14:14:03,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2020-10-27 14:14:03,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 748 transitions. [2020-10-27 14:14:03,372 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 748 transitions. Word has length 81 [2020-10-27 14:14:03,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:14:03,372 INFO L481 AbstractCegarLoop]: Abstraction has 562 states and 748 transitions. [2020-10-27 14:14:03,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 14:14:03,372 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 748 transitions. [2020-10-27 14:14:03,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 14:14:03,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:14:03,373 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:14:03,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 14:14:03,374 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:14:03,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:14:03,374 INFO L82 PathProgramCache]: Analyzing trace with hash -335353421, now seen corresponding path program 23 times [2020-10-27 14:14:03,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:14:03,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367751563] [2020-10-27 14:14:03,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:14:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:03,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:03,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:03,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:05,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:05,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:05,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:08,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:08,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 14:14:08,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:14:08,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 14:14:08,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:08,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:14:08,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:14:08,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 14:14:08,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:09,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:14:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:09,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:09,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:09,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:14:09,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:09,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:14:09,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:09,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:09,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:14:09,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:09,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:09,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:14:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:09,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:09,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:09,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:14:09,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:09,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:14:09,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:09,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:09,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 14:14:09,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:09,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:09,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 14:14:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:09,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:09,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:09,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:14:09,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:09,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:14:09,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:09,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:09,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 14:14:09,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:09,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:09,288 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:14:09,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367751563] [2020-10-27 14:14:09,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:14:09,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 14:14:09,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275950279] [2020-10-27 14:14:09,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 14:14:09,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:14:09,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 14:14:09,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=427, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:14:09,291 INFO L87 Difference]: Start difference. First operand 562 states and 748 transitions. Second operand 28 states. [2020-10-27 14:14:12,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:14:12,341 INFO L93 Difference]: Finished difference Result 1112 states and 1500 transitions. [2020-10-27 14:14:12,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 14:14:12,343 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 83 [2020-10-27 14:14:12,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:14:12,346 INFO L225 Difference]: With dead ends: 1112 [2020-10-27 14:14:12,346 INFO L226 Difference]: Without dead ends: 609 [2020-10-27 14:14:12,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=333, Invalid=479, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:14:12,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2020-10-27 14:14:12,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 585. [2020-10-27 14:14:12,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-10-27 14:14:12,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 779 transitions. [2020-10-27 14:14:12,388 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 779 transitions. Word has length 83 [2020-10-27 14:14:12,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:14:12,388 INFO L481 AbstractCegarLoop]: Abstraction has 585 states and 779 transitions. [2020-10-27 14:14:12,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 14:14:12,389 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 779 transitions. [2020-10-27 14:14:12,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 14:14:12,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:14:12,390 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:14:12,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 14:14:12,390 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:14:12,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:14:12,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1473139793, now seen corresponding path program 24 times [2020-10-27 14:14:12,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:14:12,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064289364] [2020-10-27 14:14:12,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:14:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:12,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:12,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:12,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:12,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:14,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:14,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:17,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:17,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 14:14:17,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:14:17,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:14:17,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:17,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:14:17,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:14:17,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 14:14:17,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:18,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:14:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:18,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:18,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:18,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:14:18,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:18,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:14:18,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:18,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:18,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:14:18,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:18,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:18,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:14:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:18,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:18,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:18,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:14:18,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:18,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:14:18,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:18,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:18,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 14:14:18,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:18,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:18,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:14:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:18,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:18,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:18,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:14:18,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:18,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:14:18,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:18,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:18,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 14:14:18,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:18,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:18,403 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:14:18,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064289364] [2020-10-27 14:14:18,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:14:18,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 14:14:18,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767877306] [2020-10-27 14:14:18,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 14:14:18,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:14:18,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 14:14:18,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=457, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:14:18,408 INFO L87 Difference]: Start difference. First operand 585 states and 779 transitions. Second operand 29 states. [2020-10-27 14:14:21,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:14:21,452 INFO L93 Difference]: Finished difference Result 1156 states and 1560 transitions. [2020-10-27 14:14:21,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 14:14:21,454 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 85 [2020-10-27 14:14:21,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:14:21,457 INFO L225 Difference]: With dead ends: 1156 [2020-10-27 14:14:21,457 INFO L226 Difference]: Without dead ends: 632 [2020-10-27 14:14:21,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=359, Invalid=511, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:14:21,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2020-10-27 14:14:21,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 608. [2020-10-27 14:14:21,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2020-10-27 14:14:21,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 810 transitions. [2020-10-27 14:14:21,518 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 810 transitions. Word has length 85 [2020-10-27 14:14:21,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:14:21,518 INFO L481 AbstractCegarLoop]: Abstraction has 608 states and 810 transitions. [2020-10-27 14:14:21,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-27 14:14:21,518 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 810 transitions. [2020-10-27 14:14:21,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 14:14:21,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:14:21,519 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:14:21,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 14:14:21,520 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:14:21,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:14:21,520 INFO L82 PathProgramCache]: Analyzing trace with hash -26636433, now seen corresponding path program 25 times [2020-10-27 14:14:21,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:14:21,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401242669] [2020-10-27 14:14:21,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:14:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:21,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:21,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:21,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:23,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:23,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:23,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:26,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:26,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 14:14:26,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:14:26,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 14:14:26,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:26,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 14:14:26,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:14:26,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 14:14:26,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:27,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:14:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:27,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:27,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:27,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:14:27,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:27,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:14:27,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:27,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:27,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:14:27,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:27,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:27,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 14:14:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:27,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:27,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:27,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:14:27,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:27,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:14:27,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:27,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:27,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 14:14:27,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:27,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:27,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 14:14:27,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:27,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:27,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:27,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:14:27,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:27,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:14:27,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:27,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:27,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 14:14:27,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:27,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:27,606 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:14:27,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401242669] [2020-10-27 14:14:27,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:14:27,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 14:14:27,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544547322] [2020-10-27 14:14:27,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 14:14:27,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:14:27,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 14:14:27,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=488, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:14:27,609 INFO L87 Difference]: Start difference. First operand 608 states and 810 transitions. Second operand 30 states. [2020-10-27 14:14:30,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:14:30,972 INFO L93 Difference]: Finished difference Result 1200 states and 1620 transitions. [2020-10-27 14:14:30,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 14:14:30,973 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 87 [2020-10-27 14:14:30,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:14:30,976 INFO L225 Difference]: With dead ends: 1200 [2020-10-27 14:14:30,976 INFO L226 Difference]: Without dead ends: 655 [2020-10-27 14:14:30,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=386, Invalid=544, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:14:30,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2020-10-27 14:14:31,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 631. [2020-10-27 14:14:31,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2020-10-27 14:14:31,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 841 transitions. [2020-10-27 14:14:31,021 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 841 transitions. Word has length 87 [2020-10-27 14:14:31,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:14:31,021 INFO L481 AbstractCegarLoop]: Abstraction has 631 states and 841 transitions. [2020-10-27 14:14:31,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 14:14:31,021 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 841 transitions. [2020-10-27 14:14:31,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-27 14:14:31,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:14:31,023 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:14:31,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 14:14:31,023 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:14:31,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:14:31,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1797421837, now seen corresponding path program 26 times [2020-10-27 14:14:31,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:14:31,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197873162] [2020-10-27 14:14:31,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:14:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:31,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:31,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:31,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:31,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:33,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:33,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:36,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:36,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 14:14:36,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:14:36,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 14:14:36,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:36,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:14:36,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:14:36,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 14:14:36,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:37,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:14:37,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:37,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:37,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:37,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:14:37,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:37,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:14:37,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:37,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:37,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:14:37,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:37,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:37,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:14:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:37,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:37,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:37,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:14:37,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:37,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:14:37,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:37,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:37,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 14:14:37,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:37,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:37,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 14:14:37,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:37,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:37,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:37,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:14:37,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:37,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:14:37,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:37,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:37,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 14:14:37,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:37,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:37,141 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:14:37,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197873162] [2020-10-27 14:14:37,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:14:37,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-27 14:14:37,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055731713] [2020-10-27 14:14:37,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-27 14:14:37,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:14:37,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-27 14:14:37,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=520, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:14:37,143 INFO L87 Difference]: Start difference. First operand 631 states and 841 transitions. Second operand 31 states. [2020-10-27 14:14:39,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:14:39,904 INFO L93 Difference]: Finished difference Result 1244 states and 1680 transitions. [2020-10-27 14:14:39,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 14:14:39,906 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 89 [2020-10-27 14:14:39,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:14:39,910 INFO L225 Difference]: With dead ends: 1244 [2020-10-27 14:14:39,911 INFO L226 Difference]: Without dead ends: 678 [2020-10-27 14:14:39,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=414, Invalid=578, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:14:39,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2020-10-27 14:14:39,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 654. [2020-10-27 14:14:39,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654 states. [2020-10-27 14:14:39,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 872 transitions. [2020-10-27 14:14:39,957 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 872 transitions. Word has length 89 [2020-10-27 14:14:39,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:14:39,958 INFO L481 AbstractCegarLoop]: Abstraction has 654 states and 872 transitions. [2020-10-27 14:14:39,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-27 14:14:39,958 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 872 transitions. [2020-10-27 14:14:39,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 14:14:39,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:14:39,959 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:14:39,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 14:14:39,960 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:14:39,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:14:39,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1924204757, now seen corresponding path program 27 times [2020-10-27 14:14:39,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:14:39,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244906755] [2020-10-27 14:14:39,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:14:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:39,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:39,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:40,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:40,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:42,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:42,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:44,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:44,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 14:14:44,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:14:44,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 14:14:44,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:44,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 14:14:44,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:14:44,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 14:14:45,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:46,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:14:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:46,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:46,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:46,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:14:46,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:46,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:14:46,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:46,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:46,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:14:46,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:46,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:46,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 14:14:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:46,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:46,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:46,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:14:46,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:46,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:14:46,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:46,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:46,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 14:14:46,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:46,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:46,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 14:14:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:46,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:46,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:46,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:14:46,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:46,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:14:46,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:46,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:46,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 14:14:46,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:46,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:46,164 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:14:46,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244906755] [2020-10-27 14:14:46,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:14:46,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-27 14:14:46,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921261506] [2020-10-27 14:14:46,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-27 14:14:46,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:14:46,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-27 14:14:46,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=553, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:14:46,167 INFO L87 Difference]: Start difference. First operand 654 states and 872 transitions. Second operand 32 states. [2020-10-27 14:14:49,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:14:49,578 INFO L93 Difference]: Finished difference Result 1288 states and 1740 transitions. [2020-10-27 14:14:49,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 14:14:49,579 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 91 [2020-10-27 14:14:49,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:14:49,583 INFO L225 Difference]: With dead ends: 1288 [2020-10-27 14:14:49,583 INFO L226 Difference]: Without dead ends: 701 [2020-10-27 14:14:49,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=443, Invalid=613, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:14:49,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2020-10-27 14:14:49,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 677. [2020-10-27 14:14:49,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 677 states. [2020-10-27 14:14:49,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 903 transitions. [2020-10-27 14:14:49,639 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 903 transitions. Word has length 91 [2020-10-27 14:14:49,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:14:49,639 INFO L481 AbstractCegarLoop]: Abstraction has 677 states and 903 transitions. [2020-10-27 14:14:49,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-27 14:14:49,639 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 903 transitions. [2020-10-27 14:14:49,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 14:14:49,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:14:49,640 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:14:49,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 14:14:49,641 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:14:49,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:14:49,641 INFO L82 PathProgramCache]: Analyzing trace with hash -699604023, now seen corresponding path program 28 times [2020-10-27 14:14:49,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:14:49,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680594909] [2020-10-27 14:14:49,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:14:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:49,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:49,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:49,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:49,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:54,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:54,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 14:14:54,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:14:54,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 14:14:54,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:54,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 14:14:54,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 14:14:54,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 14:14:54,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:55,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:14:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:55,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:55,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:55,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:14:55,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:55,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:14:55,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:55,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:55,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:14:55,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:55,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:55,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:14:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:55,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:55,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:55,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 14:14:55,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:55,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:14:55,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:55,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:55,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 14:14:55,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:55,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:55,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:14:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:55,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:55,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:55,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:14:55,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:55,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:14:55,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:55,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:55,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 14:14:55,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:55,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:55,922 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:14:55,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680594909] [2020-10-27 14:14:55,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:14:55,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-27 14:14:55,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624127442] [2020-10-27 14:14:55,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-27 14:14:55,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:14:55,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-27 14:14:55,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=587, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:14:55,925 INFO L87 Difference]: Start difference. First operand 677 states and 903 transitions. Second operand 33 states. [2020-10-27 14:14:59,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:14:59,072 INFO L93 Difference]: Finished difference Result 1332 states and 1800 transitions. [2020-10-27 14:14:59,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 14:14:59,073 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 93 [2020-10-27 14:14:59,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:14:59,077 INFO L225 Difference]: With dead ends: 1332 [2020-10-27 14:14:59,077 INFO L226 Difference]: Without dead ends: 724 [2020-10-27 14:14:59,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=473, Invalid=649, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:14:59,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2020-10-27 14:14:59,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 700. [2020-10-27 14:14:59,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2020-10-27 14:14:59,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 934 transitions. [2020-10-27 14:14:59,128 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 934 transitions. Word has length 93 [2020-10-27 14:14:59,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:14:59,128 INFO L481 AbstractCegarLoop]: Abstraction has 700 states and 934 transitions. [2020-10-27 14:14:59,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-27 14:14:59,129 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 934 transitions. [2020-10-27 14:14:59,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 14:14:59,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:14:59,130 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:14:59,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 14:14:59,130 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:14:59,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:14:59,130 INFO L82 PathProgramCache]: Analyzing trace with hash -679337753, now seen corresponding path program 29 times [2020-10-27 14:14:59,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:14:59,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542107173] [2020-10-27 14:14:59,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:14:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:59,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:59,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:59,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:00,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:02,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:02,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking...