/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/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:22:57,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:22:57,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:22:57,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:22:57,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:22:57,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:22:57,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:22:57,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:22:57,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:22:57,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:22:57,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:22:57,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:22:57,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:22:57,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:22:57,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:22:57,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:22:57,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:22:57,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:22:57,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:22:57,647 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:22:57,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:22:57,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:22:57,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:22:57,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:22:57,660 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:22:57,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:22:57,661 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:22:57,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:22:57,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:22:57,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:22:57,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:22:57,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:22:57,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:22:57,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:22:57,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:22:57,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:22:57,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:22:57,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:22:57,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:22:57,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:22:57,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:22:57,672 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 23:22:57,697 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:22:57,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:22:57,699 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:22:57,699 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:22:57,700 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:22:57,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:22:57,700 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:22:57,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:22:57,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:22:57,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:22:57,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:22:57,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:22:57,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:22:57,701 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:22:57,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:22:57,702 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:22:57,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:22:57,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:22:57,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:22:57,703 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:22:57,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:22:57,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:22:57,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:22:57,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:22:57,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:22:57,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:22:57,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:22:57,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:22:57,704 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:22:57,705 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:22:58,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:22:58,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:22:58,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:22:58,092 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:22:58,092 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:22:58,097 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-10-27 23:22:58,168 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4b27c59f/6c32779daed64ec396dea19a232b1d38/FLAG2584cbed0 [2020-10-27 23:22:58,822 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:22:58,823 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-10-27 23:22:58,842 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4b27c59f/6c32779daed64ec396dea19a232b1d38/FLAG2584cbed0 [2020-10-27 23:22:59,074 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4b27c59f/6c32779daed64ec396dea19a232b1d38 [2020-10-27 23:22:59,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:22:59,093 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:22:59,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:22:59,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:22:59,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:22:59,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:22:59" (1/1) ... [2020-10-27 23:22:59,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29162f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:59, skipping insertion in model container [2020-10-27 23:22:59,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:22:59" (1/1) ... [2020-10-27 23:22:59,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:22:59,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:22:59,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:22:59,486 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:22:59,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:22:59,652 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:22:59,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:59 WrapperNode [2020-10-27 23:22:59,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:22:59,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:22:59,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:22:59,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:22:59,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:59" (1/1) ... [2020-10-27 23:22:59,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:59" (1/1) ... [2020-10-27 23:22:59,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:59" (1/1) ... [2020-10-27 23:22:59,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:59" (1/1) ... [2020-10-27 23:22:59,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:59" (1/1) ... [2020-10-27 23:22:59,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:59" (1/1) ... [2020-10-27 23:22:59,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:59" (1/1) ... [2020-10-27 23:22:59,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:22:59,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:22:59,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:22:59,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:22:59,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:22:59,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:22:59,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:22:59,809 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:22:59,809 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:22:59,809 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:22:59,810 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:22:59,810 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:22:59,810 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:22:59,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:22:59,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:22:59,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:22:59,811 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:22:59,811 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:22:59,811 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:22:59,811 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:22:59,811 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:22:59,811 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:22:59,812 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:22:59,812 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:22:59,812 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:22:59,812 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:22:59,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:22:59,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:22:59,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:22:59,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:22:59,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:22:59,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:23:00,692 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:23:00,692 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:23:00,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:23:00 BoogieIcfgContainer [2020-10-27 23:23:00,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:23:00,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:23:00,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:23:00,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:23:00,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:22:59" (1/3) ... [2020-10-27 23:23:00,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dfceafe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:23:00, skipping insertion in model container [2020-10-27 23:23:00,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:59" (2/3) ... [2020-10-27 23:23:00,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dfceafe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:23:00, skipping insertion in model container [2020-10-27 23:23:00,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:23:00" (3/3) ... [2020-10-27 23:23:00,703 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-10-27 23:23:00,715 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:23:00,721 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:23:00,734 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:23:00,760 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:23:00,760 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:23:00,760 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:23:00,760 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:23:00,760 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:23:00,761 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:23:00,761 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:23:00,761 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:23:00,782 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states. [2020-10-27 23:23:00,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 23:23:00,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:00,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:23:00,793 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:00,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:00,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1717592954, now seen corresponding path program 1 times [2020-10-27 23:23:00,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:00,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931112219] [2020-10-27 23:23:00,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:01,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:01,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:01,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:02,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:03,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:03,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 23:23:03,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 23:23:03,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2584 [2020-10-27 23:23:03,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:03,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:23:03,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 23:23:03,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 23:23:03,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 23:23:04,182 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:23:04,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:04,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:04,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:04,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:04,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:04,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 23:23:04,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:04,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:23:04,257 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 23:23:04,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931112219] [2020-10-27 23:23:04,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:04,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:23:04,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716401818] [2020-10-27 23:23:04,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:23:04,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:04,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:23:04,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:23:04,283 INFO L87 Difference]: Start difference. First operand 144 states. Second operand 6 states. [2020-10-27 23:23:04,635 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:23:05,854 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 23:23:06,182 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:23:06,602 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 23:23:06,907 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 23:23:07,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:07,004 INFO L93 Difference]: Finished difference Result 642 states and 1079 transitions. [2020-10-27 23:23:07,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 23:23:07,006 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-10-27 23:23:07,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:07,035 INFO L225 Difference]: With dead ends: 642 [2020-10-27 23:23:07,036 INFO L226 Difference]: Without dead ends: 532 [2020-10-27 23:23:07,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-27 23:23:07,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-10-27 23:23:07,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 213. [2020-10-27 23:23:07,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-27 23:23:07,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 338 transitions. [2020-10-27 23:23:07,133 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 338 transitions. Word has length 62 [2020-10-27 23:23:07,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:07,134 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 338 transitions. [2020-10-27 23:23:07,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:23:07,134 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 338 transitions. [2020-10-27 23:23:07,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 23:23:07,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:07,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:23:07,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:23:07,138 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:07,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:07,139 INFO L82 PathProgramCache]: Analyzing trace with hash -204459959, now seen corresponding path program 1 times [2020-10-27 23:23:07,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:07,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036932888] [2020-10-27 23:23:07,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:07,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:07,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:07,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:07,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:07,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:10,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:10,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 23:23:10,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:23:10,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3271 [2020-10-27 23:23:10,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:10,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:23:10,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 23:23:10,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 23:23:10,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 23:23:10,855 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:23:10,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:10,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:10,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:10,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:10,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:10,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:23:10,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:10,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:10,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:10,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:10,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:10,898 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 23:23:10,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036932888] [2020-10-27 23:23:10,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:10,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:23:10,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189342497] [2020-10-27 23:23:10,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:23:10,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:10,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:23:10,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:23:10,904 INFO L87 Difference]: Start difference. First operand 213 states and 338 transitions. Second operand 7 states. [2020-10-27 23:23:11,246 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-27 23:23:12,346 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 23:23:12,670 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 23:23:12,993 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:23:13,334 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 23:23:13,673 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 23:23:14,290 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 23:23:14,740 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 23:23:14,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:14,766 INFO L93 Difference]: Finished difference Result 1302 states and 2159 transitions. [2020-10-27 23:23:14,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 23:23:14,767 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2020-10-27 23:23:14,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:14,775 INFO L225 Difference]: With dead ends: 1302 [2020-10-27 23:23:14,775 INFO L226 Difference]: Without dead ends: 1147 [2020-10-27 23:23:14,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-10-27 23:23:14,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2020-10-27 23:23:14,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 606. [2020-10-27 23:23:14,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 606 states. [2020-10-27 23:23:14,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 999 transitions. [2020-10-27 23:23:14,865 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 999 transitions. Word has length 63 [2020-10-27 23:23:14,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:14,866 INFO L481 AbstractCegarLoop]: Abstraction has 606 states and 999 transitions. [2020-10-27 23:23:14,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:23:14,866 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 999 transitions. [2020-10-27 23:23:14,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 23:23:14,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:14,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:23:14,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:23:14,880 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:14,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:14,881 INFO L82 PathProgramCache]: Analyzing trace with hash 482740595, now seen corresponding path program 1 times [2020-10-27 23:23:14,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:14,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494886630] [2020-10-27 23:23:14,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:14,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:14,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:15,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:15,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:15,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:17,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:17,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 23:23:17,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:23:17,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2862 [2020-10-27 23:23:17,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:17,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:23:17,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 23:23:17,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 23:23:17,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:18,099 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:23:18,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:18,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:18,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:18,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:18,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:18,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:23:18,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:18,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:18,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:18,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:18,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:18,148 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 23:23:18,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494886630] [2020-10-27 23:23:18,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:18,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:23:18,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921425237] [2020-10-27 23:23:18,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:23:18,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:18,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:23:18,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:18,152 INFO L87 Difference]: Start difference. First operand 606 states and 999 transitions. Second operand 5 states. [2020-10-27 23:23:18,521 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 23:23:19,438 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:23:19,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:19,556 INFO L93 Difference]: Finished difference Result 2117 states and 3540 transitions. [2020-10-27 23:23:19,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:23:19,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-27 23:23:19,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:19,566 INFO L225 Difference]: With dead ends: 2117 [2020-10-27 23:23:19,567 INFO L226 Difference]: Without dead ends: 1616 [2020-10-27 23:23:19,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:23:19,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2020-10-27 23:23:19,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1105. [2020-10-27 23:23:19,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1105 states. [2020-10-27 23:23:19,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1836 transitions. [2020-10-27 23:23:19,664 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1836 transitions. Word has length 64 [2020-10-27 23:23:19,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:19,664 INFO L481 AbstractCegarLoop]: Abstraction has 1105 states and 1836 transitions. [2020-10-27 23:23:19,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:23:19,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1836 transitions. [2020-10-27 23:23:19,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 23:23:19,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:19,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:23:19,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:23:19,667 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:19,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:19,667 INFO L82 PathProgramCache]: Analyzing trace with hash 424108559, now seen corresponding path program 1 times [2020-10-27 23:23:19,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:19,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934736740] [2020-10-27 23:23:19,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:19,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:19,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:19,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:19,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:19,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:20,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:20,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:20,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:24,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:24,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 23:23:24,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:23:24,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 23:23:24,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:24,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:23:24,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 23:23:24,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:23:24,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:25,055 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:23:25,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:25,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:25,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:25,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:25,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:25,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:23:25,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:25,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:25,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:25,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:25,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:25,097 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 23:23:25,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934736740] [2020-10-27 23:23:25,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:25,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:23:25,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633000078] [2020-10-27 23:23:25,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:23:25,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:25,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:23:25,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:23:25,100 INFO L87 Difference]: Start difference. First operand 1105 states and 1836 transitions. Second operand 4 states. [2020-10-27 23:23:25,437 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 23:23:26,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:26,347 INFO L93 Difference]: Finished difference Result 2864 states and 4791 transitions. [2020-10-27 23:23:26,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:23:26,348 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-10-27 23:23:26,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:26,358 INFO L225 Difference]: With dead ends: 2864 [2020-10-27 23:23:26,358 INFO L226 Difference]: Without dead ends: 1831 [2020-10-27 23:23:26,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:26,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2020-10-27 23:23:26,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1828. [2020-10-27 23:23:26,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1828 states. [2020-10-27 23:23:26,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 3036 transitions. [2020-10-27 23:23:26,494 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 3036 transitions. Word has length 65 [2020-10-27 23:23:26,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:26,494 INFO L481 AbstractCegarLoop]: Abstraction has 1828 states and 3036 transitions. [2020-10-27 23:23:26,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:23:26,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 3036 transitions. [2020-10-27 23:23:26,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 23:23:26,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:26,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:23:26,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:23:26,496 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:26,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:26,497 INFO L82 PathProgramCache]: Analyzing trace with hash 452420002, now seen corresponding path program 1 times [2020-10-27 23:23:26,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:26,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800889984] [2020-10-27 23:23:26,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:26,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:26,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:26,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:26,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:26,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:28,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:28,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 23:23:28,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:23:28,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2273 [2020-10-27 23:23:28,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:28,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:23:28,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-27 23:23:28,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 23:23:28,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:29,113 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:23:29,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:29,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:29,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:29,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:29,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:29,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:23:29,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:29,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:29,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:29,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:29,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:29,155 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 23:23:29,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800889984] [2020-10-27 23:23:29,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:29,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:23:29,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77796908] [2020-10-27 23:23:29,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:23:29,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:29,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:23:29,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:29,158 INFO L87 Difference]: Start difference. First operand 1828 states and 3036 transitions. Second operand 5 states. [2020-10-27 23:23:29,480 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 23:23:30,389 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:23:30,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:30,776 INFO L93 Difference]: Finished difference Result 6991 states and 11664 transitions. [2020-10-27 23:23:30,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:23:30,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-27 23:23:30,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:30,809 INFO L225 Difference]: With dead ends: 6991 [2020-10-27 23:23:30,809 INFO L226 Difference]: Without dead ends: 5270 [2020-10-27 23:23:30,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:23:30,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5270 states. [2020-10-27 23:23:31,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5270 to 3518. [2020-10-27 23:23:31,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3518 states. [2020-10-27 23:23:31,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3518 states to 3518 states and 5838 transitions. [2020-10-27 23:23:31,114 INFO L78 Accepts]: Start accepts. Automaton has 3518 states and 5838 transitions. Word has length 65 [2020-10-27 23:23:31,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:31,115 INFO L481 AbstractCegarLoop]: Abstraction has 3518 states and 5838 transitions. [2020-10-27 23:23:31,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:23:31,115 INFO L276 IsEmpty]: Start isEmpty. Operand 3518 states and 5838 transitions. [2020-10-27 23:23:31,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 23:23:31,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:31,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:23:31,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:23:31,120 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:31,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:31,120 INFO L82 PathProgramCache]: Analyzing trace with hash -596557784, now seen corresponding path program 1 times [2020-10-27 23:23:31,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:31,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253089134] [2020-10-27 23:23:31,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:31,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:31,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:31,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:31,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:31,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:31,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:31,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:33,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:36,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:36,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 23:23:36,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:23:36,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 23:23:36,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:36,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:23:36,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-27 23:23:36,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 23:23:36,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:36,607 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:23:36,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:36,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:36,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:36,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:36,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:36,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:36,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:23:36,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:36,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:36,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:36,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:36,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:36,653 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 23:23:36,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253089134] [2020-10-27 23:23:36,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:36,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:23:36,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584045317] [2020-10-27 23:23:36,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:23:36,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:36,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:23:36,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:23:36,657 INFO L87 Difference]: Start difference. First operand 3518 states and 5838 transitions. Second operand 4 states. [2020-10-27 23:23:36,974 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 23:23:37,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:37,997 INFO L93 Difference]: Finished difference Result 9304 states and 15458 transitions. [2020-10-27 23:23:37,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:23:37,998 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-10-27 23:23:37,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:38,029 INFO L225 Difference]: With dead ends: 9304 [2020-10-27 23:23:38,029 INFO L226 Difference]: Without dead ends: 5881 [2020-10-27 23:23:38,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:38,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5881 states. [2020-10-27 23:23:38,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5881 to 5862. [2020-10-27 23:23:38,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5862 states. [2020-10-27 23:23:38,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5862 states to 5862 states and 9673 transitions. [2020-10-27 23:23:38,519 INFO L78 Accepts]: Start accepts. Automaton has 5862 states and 9673 transitions. Word has length 65 [2020-10-27 23:23:38,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:38,520 INFO L481 AbstractCegarLoop]: Abstraction has 5862 states and 9673 transitions. [2020-10-27 23:23:38,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:23:38,520 INFO L276 IsEmpty]: Start isEmpty. Operand 5862 states and 9673 transitions. [2020-10-27 23:23:38,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 23:23:38,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:38,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:23:38,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:23:38,522 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:38,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:38,523 INFO L82 PathProgramCache]: Analyzing trace with hash 506581598, now seen corresponding path program 1 times [2020-10-27 23:23:38,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:38,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170825033] [2020-10-27 23:23:38,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:38,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:38,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:38,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:38,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:38,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:39,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:41,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:43,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:43,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 23:23:43,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:23:43,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 23:23:43,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:43,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:23:43,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-27 23:23:43,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:23:43,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:43,945 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:23:43,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:43,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:43,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:43,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:43,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:43,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:23:43,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:43,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:43,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:43,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:43,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:43,978 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 23:23:43,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170825033] [2020-10-27 23:23:43,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:43,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:23:43,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545661965] [2020-10-27 23:23:43,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:23:43,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:43,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:23:43,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:23:43,987 INFO L87 Difference]: Start difference. First operand 5862 states and 9673 transitions. Second operand 4 states. [2020-10-27 23:23:44,289 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 23:23:45,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:45,538 INFO L93 Difference]: Finished difference Result 15356 states and 25325 transitions. [2020-10-27 23:23:45,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:23:45,539 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-10-27 23:23:45,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:45,589 INFO L225 Difference]: With dead ends: 15356 [2020-10-27 23:23:45,589 INFO L226 Difference]: Without dead ends: 9567 [2020-10-27 23:23:45,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:45,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9567 states. [2020-10-27 23:23:46,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9567 to 9549. [2020-10-27 23:23:46,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9549 states. [2020-10-27 23:23:46,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9549 states to 9549 states and 15614 transitions. [2020-10-27 23:23:46,260 INFO L78 Accepts]: Start accepts. Automaton has 9549 states and 15614 transitions. Word has length 65 [2020-10-27 23:23:46,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:46,260 INFO L481 AbstractCegarLoop]: Abstraction has 9549 states and 15614 transitions. [2020-10-27 23:23:46,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:23:46,260 INFO L276 IsEmpty]: Start isEmpty. Operand 9549 states and 15614 transitions. [2020-10-27 23:23:46,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 23:23:46,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:46,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:23:46,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:23:46,262 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:46,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:46,263 INFO L82 PathProgramCache]: Analyzing trace with hash 2039953586, now seen corresponding path program 1 times [2020-10-27 23:23:46,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:46,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288034106] [2020-10-27 23:23:46,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:46,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:46,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:46,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:46,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:46,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:46,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:47,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:47,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 23:23:47,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:23:47,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 862 [2020-10-27 23:23:47,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:47,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:23:47,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 23:23:47,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 23:23:47,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:47,455 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:23:47,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:47,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:47,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:47,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:47,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:47,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:47,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:23:47,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:47,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:47,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:47,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:47,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:47,493 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 23:23:47,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288034106] [2020-10-27 23:23:47,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:47,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:23:47,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639281394] [2020-10-27 23:23:47,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:23:47,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:47,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:23:47,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:23:47,498 INFO L87 Difference]: Start difference. First operand 9549 states and 15614 transitions. Second operand 4 states. [2020-10-27 23:23:48,232 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:23:49,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:49,106 INFO L93 Difference]: Finished difference Result 24259 states and 39330 transitions. [2020-10-27 23:23:49,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:23:49,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-27 23:23:49,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:49,144 INFO L225 Difference]: With dead ends: 24259 [2020-10-27 23:23:49,144 INFO L226 Difference]: Without dead ends: 14768 [2020-10-27 23:23:49,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:49,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14768 states. [2020-10-27 23:23:50,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14768 to 14765. [2020-10-27 23:23:50,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14765 states. [2020-10-27 23:23:50,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14765 states to 14765 states and 23310 transitions. [2020-10-27 23:23:50,054 INFO L78 Accepts]: Start accepts. Automaton has 14765 states and 23310 transitions. Word has length 67 [2020-10-27 23:23:50,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:50,054 INFO L481 AbstractCegarLoop]: Abstraction has 14765 states and 23310 transitions. [2020-10-27 23:23:50,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:23:50,054 INFO L276 IsEmpty]: Start isEmpty. Operand 14765 states and 23310 transitions. [2020-10-27 23:23:50,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 23:23:50,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:50,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:23:50,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:23:50,055 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:50,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:50,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1012908191, now seen corresponding path program 1 times [2020-10-27 23:23:50,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:50,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836332040] [2020-10-27 23:23:50,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:50,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:50,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:50,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:50,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:50,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:50,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:50,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 23:23:50,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:23:50,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-10-27 23:23:50,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:50,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:23:50,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-27 23:23:50,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 23:23:50,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:50,928 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:23:50,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:50,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:50,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:50,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:50,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:50,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:23:50,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:50,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:50,962 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 23:23:50,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836332040] [2020-10-27 23:23:50,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:50,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:23:50,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836967218] [2020-10-27 23:23:50,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:23:50,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:50,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:23:50,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:23:50,964 INFO L87 Difference]: Start difference. First operand 14765 states and 23310 transitions. Second operand 4 states. [2020-10-27 23:23:51,277 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:23:52,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:52,739 INFO L93 Difference]: Finished difference Result 33458 states and 52772 transitions. [2020-10-27 23:23:52,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:23:52,739 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-27 23:23:52,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:52,778 INFO L225 Difference]: With dead ends: 33458 [2020-10-27 23:23:52,779 INFO L226 Difference]: Without dead ends: 18751 [2020-10-27 23:23:52,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:52,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18751 states. [2020-10-27 23:23:53,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18751 to 18748. [2020-10-27 23:23:53,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18748 states. [2020-10-27 23:23:53,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18748 states to 18748 states and 29440 transitions. [2020-10-27 23:23:53,890 INFO L78 Accepts]: Start accepts. Automaton has 18748 states and 29440 transitions. Word has length 68 [2020-10-27 23:23:53,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:53,891 INFO L481 AbstractCegarLoop]: Abstraction has 18748 states and 29440 transitions. [2020-10-27 23:23:53,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:23:53,891 INFO L276 IsEmpty]: Start isEmpty. Operand 18748 states and 29440 transitions. [2020-10-27 23:23:53,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 23:23:53,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:53,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:23:53,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:23:53,892 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:53,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:53,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1344678036, now seen corresponding path program 1 times [2020-10-27 23:23:53,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:53,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359640100] [2020-10-27 23:23:53,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:53,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:53,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:53,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:54,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:54,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:54,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:55,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:55,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 23:23:55,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 23:23:55,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1678 [2020-10-27 23:23:55,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:55,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:23:55,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 23:23:55,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 23:23:55,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:55,965 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:23:55,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:55,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:55,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:55,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:55,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:55,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:55,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:23:55,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:55,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:55,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:55,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:55,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:56,004 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 23:23:56,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359640100] [2020-10-27 23:23:56,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:56,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:23:56,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431350489] [2020-10-27 23:23:56,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:23:56,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:56,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:23:56,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:23:56,024 INFO L87 Difference]: Start difference. First operand 18748 states and 29440 transitions. Second operand 4 states. [2020-10-27 23:23:56,358 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:23:58,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:58,067 INFO L93 Difference]: Finished difference Result 42393 states and 66513 transitions. [2020-10-27 23:23:58,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:23:58,068 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-27 23:23:58,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:58,118 INFO L225 Difference]: With dead ends: 42393 [2020-10-27 23:23:58,118 INFO L226 Difference]: Without dead ends: 23742 [2020-10-27 23:23:58,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:58,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23742 states. [2020-10-27 23:23:59,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23742 to 23739. [2020-10-27 23:23:59,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23739 states. [2020-10-27 23:23:59,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23739 states to 23739 states and 37085 transitions. [2020-10-27 23:23:59,314 INFO L78 Accepts]: Start accepts. Automaton has 23739 states and 37085 transitions. Word has length 70 [2020-10-27 23:23:59,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:59,314 INFO L481 AbstractCegarLoop]: Abstraction has 23739 states and 37085 transitions. [2020-10-27 23:23:59,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:23:59,314 INFO L276 IsEmpty]: Start isEmpty. Operand 23739 states and 37085 transitions. [2020-10-27 23:23:59,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-27 23:23:59,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:59,315 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:23:59,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:23:59,316 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:59,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:59,316 INFO L82 PathProgramCache]: Analyzing trace with hash -2045249151, now seen corresponding path program 1 times [2020-10-27 23:23:59,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:59,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687394618] [2020-10-27 23:23:59,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:59,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:59,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:59,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:59,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:59,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:59,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:01,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:02,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:02,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 23:24:02,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:24:02,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3256 [2020-10-27 23:24:02,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:02,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:24:02,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-27 23:24:02,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 23:24:02,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:02,935 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:24:02,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:24:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:02,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:02,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:02,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:24:02,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:24:02,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:24:02,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:02,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:24:02,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:24:02,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:24:02,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:02,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:24:02,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687394618] [2020-10-27 23:24:02,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:24:02,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:24:02,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113307336] [2020-10-27 23:24:02,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:24:02,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:24:02,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:24:02,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:24:02,983 INFO L87 Difference]: Start difference. First operand 23739 states and 37085 transitions. Second operand 4 states. [2020-10-27 23:24:03,320 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:24:05,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:24:05,180 INFO L93 Difference]: Finished difference Result 50789 states and 79522 transitions. [2020-10-27 23:24:05,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:24:05,180 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-10-27 23:24:05,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:24:05,223 INFO L225 Difference]: With dead ends: 50789 [2020-10-27 23:24:05,224 INFO L226 Difference]: Without dead ends: 27136 [2020-10-27 23:24:05,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:24:05,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27136 states. [2020-10-27 23:24:06,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27136 to 27133. [2020-10-27 23:24:06,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27133 states. [2020-10-27 23:24:06,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27133 states to 27133 states and 42282 transitions. [2020-10-27 23:24:06,485 INFO L78 Accepts]: Start accepts. Automaton has 27133 states and 42282 transitions. Word has length 72 [2020-10-27 23:24:06,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:24:06,485 INFO L481 AbstractCegarLoop]: Abstraction has 27133 states and 42282 transitions. [2020-10-27 23:24:06,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:24:06,485 INFO L276 IsEmpty]: Start isEmpty. Operand 27133 states and 42282 transitions. [2020-10-27 23:24:06,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-27 23:24:06,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:24:06,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:24:06,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 23:24:06,486 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:24:06,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:24:06,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1031578303, now seen corresponding path program 1 times [2020-10-27 23:24:06,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:24:06,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738404890] [2020-10-27 23:24:06,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:24:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:06,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:06,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:06,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:06,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:06,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:06,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:07,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:11,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:11,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 23:24:11,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:24:11,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 23:24:11,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:11,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:24:11,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 23:24:11,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 23:24:11,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:11,966 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:24:11,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:24:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:11,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:11,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:11,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:24:11,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:24:11,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:24:11,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:11,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:24:11,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:24:11,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:24:11,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:12,002 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 23:24:12,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738404890] [2020-10-27 23:24:12,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:24:12,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:24:12,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002231940] [2020-10-27 23:24:12,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:24:12,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:24:12,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:24:12,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:24:12,004 INFO L87 Difference]: Start difference. First operand 27133 states and 42282 transitions. Second operand 6 states. [2020-10-27 23:24:12,385 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-27 23:24:13,379 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:24:13,679 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 23:24:14,195 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-27 23:24:15,867 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:24:16,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:24:16,728 INFO L93 Difference]: Finished difference Result 77542 states and 121103 transitions. [2020-10-27 23:24:16,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 23:24:16,729 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-10-27 23:24:16,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:24:16,807 INFO L225 Difference]: With dead ends: 77542 [2020-10-27 23:24:16,807 INFO L226 Difference]: Without dead ends: 50495 [2020-10-27 23:24:16,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-27 23:24:16,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50495 states. [2020-10-27 23:24:18,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50495 to 27133. [2020-10-27 23:24:18,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27133 states. [2020-10-27 23:24:18,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27133 states to 27133 states and 42141 transitions. [2020-10-27 23:24:18,849 INFO L78 Accepts]: Start accepts. Automaton has 27133 states and 42141 transitions. Word has length 73 [2020-10-27 23:24:18,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:24:18,849 INFO L481 AbstractCegarLoop]: Abstraction has 27133 states and 42141 transitions. [2020-10-27 23:24:18,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:24:18,849 INFO L276 IsEmpty]: Start isEmpty. Operand 27133 states and 42141 transitions. [2020-10-27 23:24:18,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-27 23:24:18,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:24:18,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:24:18,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 23:24:18,850 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:24:18,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:24:18,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1840568757, now seen corresponding path program 1 times [2020-10-27 23:24:18,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:24:18,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45054580] [2020-10-27 23:24:18,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:24:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:18,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:18,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:18,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:19,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:19,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:19,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:19,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:23,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:23,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 23:24:23,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:24:23,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 23:24:23,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:23,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:24:23,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-27 23:24:23,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 23:24:23,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:24,235 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:24:24,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:24:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:24,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:24,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:24,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:24:24,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:24:24,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:24:24,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:24,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:24:24,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:24:24,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:24:24,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:24,264 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 23:24:24,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45054580] [2020-10-27 23:24:24,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:24:24,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:24:24,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003428776] [2020-10-27 23:24:24,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:24:24,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:24:24,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:24:24,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:24:24,266 INFO L87 Difference]: Start difference. First operand 27133 states and 42141 transitions. Second operand 6 states. [2020-10-27 23:24:24,645 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-27 23:24:25,635 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:24:25,948 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 23:24:26,516 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-27 23:24:29,069 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:24:31,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:24:31,473 INFO L93 Difference]: Finished difference Result 120257 states and 187525 transitions. [2020-10-27 23:24:31,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 23:24:31,474 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-10-27 23:24:31,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:24:31,611 INFO L225 Difference]: With dead ends: 120257 [2020-10-27 23:24:31,612 INFO L226 Difference]: Without dead ends: 93210 [2020-10-27 23:24:31,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-27 23:24:31,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93210 states. [2020-10-27 23:24:35,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93210 to 50144. [2020-10-27 23:24:35,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50144 states. [2020-10-27 23:24:35,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50144 states to 50144 states and 77609 transitions. [2020-10-27 23:24:35,678 INFO L78 Accepts]: Start accepts. Automaton has 50144 states and 77609 transitions. Word has length 76 [2020-10-27 23:24:35,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:24:35,678 INFO L481 AbstractCegarLoop]: Abstraction has 50144 states and 77609 transitions. [2020-10-27 23:24:35,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:24:35,678 INFO L276 IsEmpty]: Start isEmpty. Operand 50144 states and 77609 transitions. [2020-10-27 23:24:35,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-27 23:24:35,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:24:35,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:24:35,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 23:24:35,680 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:24:35,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:24:35,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1163558722, now seen corresponding path program 1 times [2020-10-27 23:24:35,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:24:35,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848122604] [2020-10-27 23:24:35,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:24:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:35,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:35,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:35,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:35,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:36,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:36,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:36,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:40,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:40,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 23:24:40,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:24:40,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 23:24:40,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:40,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:24:40,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-27 23:24:40,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 23:24:40,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:41,050 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:24:41,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:24:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:41,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:41,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:41,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:24:41,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:24:41,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:24:41,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:41,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:24:41,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:24:41,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:24:41,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:41,085 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 23:24:41,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848122604] [2020-10-27 23:24:41,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:24:41,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:24:41,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711540138] [2020-10-27 23:24:41,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:24:41,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:24:41,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:24:41,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:24:41,087 INFO L87 Difference]: Start difference. First operand 50144 states and 77609 transitions. Second operand 5 states. [2020-10-27 23:24:46,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:24:46,014 INFO L93 Difference]: Finished difference Result 69733 states and 106908 transitions. [2020-10-27 23:24:46,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:24:46,014 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-10-27 23:24:46,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:24:46,141 INFO L225 Difference]: With dead ends: 69733 [2020-10-27 23:24:46,142 INFO L226 Difference]: Without dead ends: 69730 [2020-10-27 23:24:46,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:24:46,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69730 states. [2020-10-27 23:24:49,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69730 to 50636. [2020-10-27 23:24:49,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50636 states. [2020-10-27 23:24:49,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50636 states to 50636 states and 78056 transitions. [2020-10-27 23:24:49,808 INFO L78 Accepts]: Start accepts. Automaton has 50636 states and 78056 transitions. Word has length 77 [2020-10-27 23:24:49,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:24:49,809 INFO L481 AbstractCegarLoop]: Abstraction has 50636 states and 78056 transitions. [2020-10-27 23:24:49,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:24:49,809 INFO L276 IsEmpty]: Start isEmpty. Operand 50636 states and 78056 transitions. [2020-10-27 23:24:49,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 23:24:49,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:24:49,811 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:24:49,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 23:24:49,812 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:24:49,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:24:49,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1592821636, now seen corresponding path program 1 times [2020-10-27 23:24:49,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:24:49,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590484476] [2020-10-27 23:24:49,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:24:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:49,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:49,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:49,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:49,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:50,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:50,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:50,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:50,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:54,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:54,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:54,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 23:24:54,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:24:54,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 23:24:54,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:54,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:24:54,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-27 23:24:54,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 23:24:54,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:55,167 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:24:55,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:24:55,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:55,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:55,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:55,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:24:55,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:24:55,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:24:55,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:55,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:24:55,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:24:55,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:24:55,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:55,199 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:24:55,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590484476] [2020-10-27 23:24:55,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 23:24:55,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 23:24:55,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875268093] [2020-10-27 23:24:55,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:24:55,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:24:55,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:24:55,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:24:55,201 INFO L87 Difference]: Start difference. First operand 50636 states and 78056 transitions. Second operand 6 states. [2020-10-27 23:24:55,559 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 23:24:56,678 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:24:57,062 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 23:25:01,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:25:01,980 INFO L93 Difference]: Finished difference Result 127605 states and 197603 transitions. [2020-10-27 23:25:01,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 23:25:01,981 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-10-27 23:25:01,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:25:02,084 INFO L225 Difference]: With dead ends: 127605 [2020-10-27 23:25:02,084 INFO L226 Difference]: Without dead ends: 77496 [2020-10-27 23:25:02,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:25:02,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77496 states. [2020-10-27 23:25:08,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77496 to 77471. [2020-10-27 23:25:08,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77471 states. [2020-10-27 23:25:08,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77471 states to 77471 states and 119323 transitions. [2020-10-27 23:25:08,201 INFO L78 Accepts]: Start accepts. Automaton has 77471 states and 119323 transitions. Word has length 98 [2020-10-27 23:25:08,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:25:08,202 INFO L481 AbstractCegarLoop]: Abstraction has 77471 states and 119323 transitions. [2020-10-27 23:25:08,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:25:08,202 INFO L276 IsEmpty]: Start isEmpty. Operand 77471 states and 119323 transitions. [2020-10-27 23:25:08,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 23:25:08,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:25:08,205 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:25:08,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 23:25:08,205 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:25:08,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:25:08,206 INFO L82 PathProgramCache]: Analyzing trace with hash 737992242, now seen corresponding path program 1 times [2020-10-27 23:25:08,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:25:08,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779622788] [2020-10-27 23:25:08,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:25:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:08,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:08,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:08,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:08,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:08,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:08,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:08,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:08,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:12,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:12,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:13,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:13,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 23:25:13,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:25:13,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 23:25:13,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:13,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:25:13,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 23:25:13,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 23:25:13,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:13,580 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:25:13,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:25:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:13,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:13,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:13,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:25:13,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:25:13,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:25:13,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:13,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:25:13,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:25:13,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:25:13,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:13,621 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:25:13,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779622788] [2020-10-27 23:25:13,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 23:25:13,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 23:25:13,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460962398] [2020-10-27 23:25:13,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:25:13,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:25:13,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:25:13,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:25:13,624 INFO L87 Difference]: Start difference. First operand 77471 states and 119323 transitions. Second operand 6 states. [2020-10-27 23:25:14,001 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 23:25:15,109 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:25:15,482 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 23:25:21,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:25:21,696 INFO L93 Difference]: Finished difference Result 124700 states and 192775 transitions. [2020-10-27 23:25:21,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 23:25:21,696 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-10-27 23:25:21,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:25:21,984 INFO L225 Difference]: With dead ends: 124700 [2020-10-27 23:25:21,984 INFO L226 Difference]: Without dead ends: 90740 [2020-10-27 23:25:22,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:25:22,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90740 states. [2020-10-27 23:25:28,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90740 to 89707. [2020-10-27 23:25:28,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89707 states. [2020-10-27 23:25:29,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89707 states to 89707 states and 138397 transitions. [2020-10-27 23:25:29,079 INFO L78 Accepts]: Start accepts. Automaton has 89707 states and 138397 transitions. Word has length 98 [2020-10-27 23:25:29,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:25:29,080 INFO L481 AbstractCegarLoop]: Abstraction has 89707 states and 138397 transitions. [2020-10-27 23:25:29,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:25:29,080 INFO L276 IsEmpty]: Start isEmpty. Operand 89707 states and 138397 transitions. [2020-10-27 23:25:29,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 23:25:29,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:25:29,083 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:25:29,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 23:25:29,083 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:25:29,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:25:29,084 INFO L82 PathProgramCache]: Analyzing trace with hash -307095444, now seen corresponding path program 1 times [2020-10-27 23:25:29,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:25:29,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119320896] [2020-10-27 23:25:29,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:25:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:29,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:29,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:29,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:29,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:29,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:29,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:29,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:29,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:29,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:34,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:34,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 23:25:34,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:25:34,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 23:25:34,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:34,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:25:34,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-27 23:25:34,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 23:25:34,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:34,458 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:25:34,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:25:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:34,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:34,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:34,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:25:34,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:25:34,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:25:34,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:34,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:25:34,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:25:34,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:25:34,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:34,488 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:25:34,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119320896] [2020-10-27 23:25:34,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:25:34,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:25:34,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881926235] [2020-10-27 23:25:34,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:25:34,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:25:34,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:25:34,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:25:34,489 INFO L87 Difference]: Start difference. First operand 89707 states and 138397 transitions. Second operand 4 states. [2020-10-27 23:25:35,891 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:25:41,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:25:41,057 INFO L93 Difference]: Finished difference Result 162816 states and 251711 transitions. [2020-10-27 23:25:41,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:25:41,058 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-27 23:25:41,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:25:41,164 INFO L225 Difference]: With dead ends: 162816 [2020-10-27 23:25:41,164 INFO L226 Difference]: Without dead ends: 73195 [2020-10-27 23:25:41,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:25:41,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73195 states. [2020-10-27 23:25:47,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73195 to 73140. [2020-10-27 23:25:47,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73140 states. [2020-10-27 23:25:47,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73140 states to 73140 states and 112436 transitions. [2020-10-27 23:25:47,227 INFO L78 Accepts]: Start accepts. Automaton has 73140 states and 112436 transitions. Word has length 98 [2020-10-27 23:25:47,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:25:47,227 INFO L481 AbstractCegarLoop]: Abstraction has 73140 states and 112436 transitions. [2020-10-27 23:25:47,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:25:47,227 INFO L276 IsEmpty]: Start isEmpty. Operand 73140 states and 112436 transitions. [2020-10-27 23:25:47,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 23:25:47,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:25:47,230 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:25:47,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 23:25:47,230 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:25:47,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:25:47,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1458937975, now seen corresponding path program 1 times [2020-10-27 23:25:47,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:25:47,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872461384] [2020-10-27 23:25:47,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:25:47,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:47,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:47,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:47,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:47,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:47,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:47,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:47,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:47,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:47,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:52,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:52,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 23:25:52,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:25:52,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 23:25:52,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:52,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:25:52,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 23:25:52,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 23:25:52,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:52,589 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:25:52,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:25:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:52,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:52,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:52,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:25:52,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:25:52,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:25:52,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:52,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:25:52,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:25:52,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:25:52,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:52,617 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:25:52,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872461384] [2020-10-27 23:25:52,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:25:52,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:25:52,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761843027] [2020-10-27 23:25:52,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:25:52,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:25:52,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:25:52,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:25:52,619 INFO L87 Difference]: Start difference. First operand 73140 states and 112436 transitions. Second operand 4 states. [2020-10-27 23:25:53,858 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:25:56,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:25:56,076 INFO L93 Difference]: Finished difference Result 102894 states and 158414 transitions. [2020-10-27 23:25:56,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:25:56,076 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-27 23:25:56,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:25:56,110 INFO L225 Difference]: With dead ends: 102894 [2020-10-27 23:25:56,111 INFO L226 Difference]: Without dead ends: 29840 [2020-10-27 23:25:56,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:25:56,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29840 states. [2020-10-27 23:25:58,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29840 to 29738. [2020-10-27 23:25:58,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29738 states. [2020-10-27 23:25:58,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29738 states to 29738 states and 45547 transitions. [2020-10-27 23:25:58,776 INFO L78 Accepts]: Start accepts. Automaton has 29738 states and 45547 transitions. Word has length 98 [2020-10-27 23:25:58,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:25:58,777 INFO L481 AbstractCegarLoop]: Abstraction has 29738 states and 45547 transitions. [2020-10-27 23:25:58,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:25:58,777 INFO L276 IsEmpty]: Start isEmpty. Operand 29738 states and 45547 transitions. [2020-10-27 23:25:58,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 23:25:58,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:25:58,780 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:25:58,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 23:25:58,780 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:25:58,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:25:58,780 INFO L82 PathProgramCache]: Analyzing trace with hash -924454344, now seen corresponding path program 1 times [2020-10-27 23:25:58,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:25:58,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594193093] [2020-10-27 23:25:58,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:25:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:58,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:58,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:58,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:58,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:58,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:58,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:59,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:59,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:02,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:03,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:03,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:26:03,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 23:26:03,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:26:03,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 23:26:03,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:26:03,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:26:03,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 23:26:03,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 23:26:03,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:26:04,140 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:26:04,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:26:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:26:04,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:04,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:26:04,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:26:04,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:26:04,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:26:04,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:26:04,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:26:04,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:26:04,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:26:04,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:26:04,166 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 23:26:04,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594193093] [2020-10-27 23:26:04,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:26:04,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:26:04,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764715581] [2020-10-27 23:26:04,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:26:04,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:26:04,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:26:04,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:26:04,168 INFO L87 Difference]: Start difference. First operand 29738 states and 45547 transitions. Second operand 4 states. [2020-10-27 23:26:04,479 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:26:08,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:26:08,876 INFO L93 Difference]: Finished difference Result 76667 states and 117557 transitions. [2020-10-27 23:26:08,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:26:08,877 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-27 23:26:08,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:26:08,936 INFO L225 Difference]: With dead ends: 76667 [2020-10-27 23:26:08,936 INFO L226 Difference]: Without dead ends: 49496 [2020-10-27 23:26:08,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:26:08,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49496 states. [2020-10-27 23:26:13,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49496 to 49405. [2020-10-27 23:26:13,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49405 states. [2020-10-27 23:26:13,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49405 states to 49405 states and 75633 transitions. [2020-10-27 23:26:13,366 INFO L78 Accepts]: Start accepts. Automaton has 49405 states and 75633 transitions. Word has length 98 [2020-10-27 23:26:13,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:26:13,366 INFO L481 AbstractCegarLoop]: Abstraction has 49405 states and 75633 transitions. [2020-10-27 23:26:13,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:26:13,366 INFO L276 IsEmpty]: Start isEmpty. Operand 49405 states and 75633 transitions. [2020-10-27 23:26:13,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 23:26:13,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:26:13,368 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:26:13,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 23:26:13,368 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:26:13,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:26:13,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1437623180, now seen corresponding path program 1 times [2020-10-27 23:26:13,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:26:13,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172570215] [2020-10-27 23:26:13,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:26:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:26:13,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:13,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:13,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:13,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:13,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:13,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:13,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:13,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:18,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:18,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:26:18,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 23:26:18,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:26:18,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 23:26:18,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:26:18,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:26:18,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 23:26:18,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 23:26:18,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:26:18,715 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:26:18,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:26:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:26:18,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:18,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:26:18,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:26:18,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:26:18,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:26:18,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:26:18,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:26:18,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:26:18,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:26:18,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:26:18,742 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:26:18,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172570215] [2020-10-27 23:26:18,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:26:18,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:26:18,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494201570] [2020-10-27 23:26:18,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:26:18,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:26:18,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:26:18,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:26:18,744 INFO L87 Difference]: Start difference. First operand 49405 states and 75633 transitions. Second operand 4 states. [2020-10-27 23:26:19,059 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 23:26:27,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:26:27,555 INFO L93 Difference]: Finished difference Result 145255 states and 222283 transitions. [2020-10-27 23:26:27,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:26:27,556 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-10-27 23:26:27,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:26:27,689 INFO L225 Difference]: With dead ends: 145255 [2020-10-27 23:26:27,689 INFO L226 Difference]: Without dead ends: 95925 [2020-10-27 23:26:27,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:26:27,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95925 states. [2020-10-27 23:26:36,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95925 to 95922. [2020-10-27 23:26:36,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95922 states. [2020-10-27 23:26:36,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95922 states to 95922 states and 145754 transitions. [2020-10-27 23:26:36,279 INFO L78 Accepts]: Start accepts. Automaton has 95922 states and 145754 transitions. Word has length 99 [2020-10-27 23:26:36,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:26:36,279 INFO L481 AbstractCegarLoop]: Abstraction has 95922 states and 145754 transitions. [2020-10-27 23:26:36,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:26:36,280 INFO L276 IsEmpty]: Start isEmpty. Operand 95922 states and 145754 transitions. [2020-10-27 23:26:36,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 23:26:36,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:26:36,282 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:26:36,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 23:26:36,283 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:26:36,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:26:36,283 INFO L82 PathProgramCache]: Analyzing trace with hash -245352061, now seen corresponding path program 1 times [2020-10-27 23:26:36,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:26:36,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33851274] [2020-10-27 23:26:36,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:26:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:26:36,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:36,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:36,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:36,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:36,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:36,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:36,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:36,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:41,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:41,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:26:41,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 23:26:41,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:26:41,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 23:26:41,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:26:41,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:26:41,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-27 23:26:41,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 23:26:41,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0