/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_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:33:53,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:33:53,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:33:53,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:33:53,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:33:53,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:33:53,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:33:53,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:33:53,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:33:53,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:33:53,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:33:53,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:33:53,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:33:53,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:33:53,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:33:53,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:33:53,773 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:33:53,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:33:53,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:33:53,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:33:53,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:33:53,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:33:53,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:33:53,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:33:53,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:33:53,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:33:53,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:33:53,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:33:53,805 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:33:53,806 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 00:33:53,806 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 00:33:53,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 00:33:53,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 00:33:53,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 00:33:53,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 00:33:53,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 00:33:53,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 00:33:53,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 00:33:53,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:33:53,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:33:53,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:33:53,814 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 [2020-10-28 00:33:53,840 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:33:53,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:33:53,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:33:53,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:33:53,842 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:33:53,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:33:53,843 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:33:53,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:33:53,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:33:53,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:33:53,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:33:53,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:33:53,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:33:53,844 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:33:53,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:33:53,844 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:33:53,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:33:53,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:33:53,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:33:53,845 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:33:53,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:33:53,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:33:53,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:33:53,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:33:53,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:33:53,846 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:33:53,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:33:53,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:33:53,847 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:33:53,847 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:33:54,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:33:54,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:33:54,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:33:54,228 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:33:54,229 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:33:54,230 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-28 00:33:54,318 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d889db7e/32f8b199fa9d412d9fbc53a7dce6e254/FLAGbaa5edbc7 [2020-10-28 00:33:55,134 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:33:55,135 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-28 00:33:55,157 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d889db7e/32f8b199fa9d412d9fbc53a7dce6e254/FLAGbaa5edbc7 [2020-10-28 00:33:55,317 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d889db7e/32f8b199fa9d412d9fbc53a7dce6e254 [2020-10-28 00:33:55,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:33:55,329 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:33:55,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:33:55,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:33:55,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:33:55,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:33:55" (1/1) ... [2020-10-28 00:33:55,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48b53381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:55, skipping insertion in model container [2020-10-28 00:33:55,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:33:55" (1/1) ... [2020-10-28 00:33:55,353 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:33:55,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:33:56,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:33:56,549 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:33:57,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:33:57,049 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:33:57,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:57 WrapperNode [2020-10-28 00:33:57,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:33:57,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:33:57,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:33:57,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:33:57,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:57" (1/1) ... [2020-10-28 00:33:57,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:57" (1/1) ... [2020-10-28 00:33:57,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:57" (1/1) ... [2020-10-28 00:33:57,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:57" (1/1) ... [2020-10-28 00:33:57,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:57" (1/1) ... [2020-10-28 00:33:57,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:57" (1/1) ... [2020-10-28 00:33:57,204 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:57" (1/1) ... [2020-10-28 00:33:57,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:33:57,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:33:57,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:33:57,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:33:57,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:57" (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 [2020-10-28 00:33:57,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:33:57,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:33:57,305 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:33:57,306 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:33:57,306 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:33:57,307 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:33:57,307 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:33:57,307 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:33:57,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:33:57,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:33:57,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:33:57,308 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:33:57,309 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:33:57,309 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:33:57,309 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:33:57,310 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:33:57,310 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:33:57,310 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:33:57,311 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 00:33:57,311 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:33:57,311 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:33:57,311 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:33:57,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:33:57,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:33:57,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:33:57,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:33:57,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:33:57,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:33:59,858 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:33:59,858 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:33:59,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:33:59 BoogieIcfgContainer [2020-10-28 00:33:59,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:33:59,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:33:59,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:33:59,870 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:33:59,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:33:55" (1/3) ... [2020-10-28 00:33:59,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c9ce087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:33:59, skipping insertion in model container [2020-10-28 00:33:59,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:57" (2/3) ... [2020-10-28 00:33:59,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c9ce087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:33:59, skipping insertion in model container [2020-10-28 00:33:59,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:33:59" (3/3) ... [2020-10-28 00:33:59,874 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-28 00:33:59,886 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:33:59,891 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:33:59,904 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:33:59,935 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:33:59,936 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:33:59,936 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:33:59,936 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:33:59,936 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:33:59,936 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:33:59,936 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:33:59,936 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:33:59,969 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states. [2020-10-28 00:34:00,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-28 00:34:00,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:34:00,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:34:00,003 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:34:00,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:34:00,012 INFO L82 PathProgramCache]: Analyzing trace with hash -540047237, now seen corresponding path program 1 times [2020-10-28 00:34:00,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:34:00,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190651183] [2020-10-28 00:34:00,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:34:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:00,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:01,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:02,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:02,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:02,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:03,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:03,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:03,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:04,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:04,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:04,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:04,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:05,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:05,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:05,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:05,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:05,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-28 00:34:05,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:34:05,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-28 00:34:05,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:05,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:34:05,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-28 00:34:05,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-28 00:34:05,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 00:34:06,756 WARN L193 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-28 00:34:06,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:34:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:06,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:06,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:06,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:34:06,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:34:06,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 00:34:06,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:06,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:34:06,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:34:06,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:34:06,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:34:07,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:34:07,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190651183] [2020-10-28 00:34:07,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:34:07,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:34:07,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938570401] [2020-10-28 00:34:07,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:34:07,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:34:07,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:34:07,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:34:07,087 INFO L87 Difference]: Start difference. First operand 799 states. Second operand 4 states. [2020-10-28 00:34:07,824 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 314 [2020-10-28 00:34:13,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:34:13,178 INFO L93 Difference]: Finished difference Result 1496 states and 2629 transitions. [2020-10-28 00:34:13,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:34:13,180 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 325 [2020-10-28 00:34:13,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:34:13,213 INFO L225 Difference]: With dead ends: 1496 [2020-10-28 00:34:13,213 INFO L226 Difference]: Without dead ends: 1286 [2020-10-28 00:34:13,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:34:13,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2020-10-28 00:34:13,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1283. [2020-10-28 00:34:13,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1283 states. [2020-10-28 00:34:13,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 2006 transitions. [2020-10-28 00:34:13,360 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 2006 transitions. Word has length 325 [2020-10-28 00:34:13,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:34:13,362 INFO L481 AbstractCegarLoop]: Abstraction has 1283 states and 2006 transitions. [2020-10-28 00:34:13,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:34:13,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 2006 transitions. [2020-10-28 00:34:13,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-28 00:34:13,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:34:13,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:34:13,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:34:13,371 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:34:13,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:34:13,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1948349173, now seen corresponding path program 1 times [2020-10-28 00:34:13,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:34:13,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753740610] [2020-10-28 00:34:13,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:34:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:13,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:13,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:14,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:14,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:14,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:14,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:15,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:15,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:15,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:15,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:15,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:15,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:16,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:16,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:16,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:16,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:18,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:18,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-28 00:34:18,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 00:34:18,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-28 00:34:18,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:18,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:34:18,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-28 00:34:18,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-10-28 00:34:18,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:19,526 WARN L193 SmtUtils]: Spent 837.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-28 00:34:19,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:34:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:19,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:19,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:19,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:34:19,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:34:19,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 00:34:19,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:19,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:34:19,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:34:19,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:34:19,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:19,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:34:19,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753740610] [2020-10-28 00:34:19,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:34:19,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:34:19,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594027525] [2020-10-28 00:34:19,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:34:19,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:34:19,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:34:19,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:34:19,759 INFO L87 Difference]: Start difference. First operand 1283 states and 2006 transitions. Second operand 4 states. [2020-10-28 00:34:20,590 WARN L193 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 314 [2020-10-28 00:34:25,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:34:25,162 INFO L93 Difference]: Finished difference Result 2615 states and 4121 transitions. [2020-10-28 00:34:25,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:34:25,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 325 [2020-10-28 00:34:25,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:34:25,177 INFO L225 Difference]: With dead ends: 2615 [2020-10-28 00:34:25,177 INFO L226 Difference]: Without dead ends: 2250 [2020-10-28 00:34:25,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:34:25,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2020-10-28 00:34:25,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 2247. [2020-10-28 00:34:25,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2247 states. [2020-10-28 00:34:25,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3508 transitions. [2020-10-28 00:34:25,308 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3508 transitions. Word has length 325 [2020-10-28 00:34:25,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:34:25,309 INFO L481 AbstractCegarLoop]: Abstraction has 2247 states and 3508 transitions. [2020-10-28 00:34:25,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:34:25,309 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3508 transitions. [2020-10-28 00:34:25,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-28 00:34:25,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:34:25,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:34:25,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 00:34:25,319 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:34:25,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:34:25,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1821978594, now seen corresponding path program 1 times [2020-10-28 00:34:25,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:34:25,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706562368] [2020-10-28 00:34:25,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:34:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:25,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:25,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:25,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:26,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:26,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:26,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:26,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:26,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:27,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:27,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:27,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:27,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:27,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:27,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:27,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:28,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:30,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:30,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-28 00:34:30,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 00:34:30,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 00:34:30,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:30,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:34:30,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-28 00:34:30,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 228 [2020-10-28 00:34:30,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:31,267 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-28 00:34:31,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:34:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:31,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:31,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:31,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:34:31,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:34:31,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 00:34:31,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:31,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:34:31,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:34:31,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:34:31,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:31,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:34:31,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706562368] [2020-10-28 00:34:31,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:34:31,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:34:31,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409102134] [2020-10-28 00:34:31,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:34:31,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:34:31,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:34:31,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:34:31,466 INFO L87 Difference]: Start difference. First operand 2247 states and 3508 transitions. Second operand 4 states. [2020-10-28 00:34:32,247 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 314 [2020-10-28 00:34:36,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:34:36,593 INFO L93 Difference]: Finished difference Result 4825 states and 7596 transitions. [2020-10-28 00:34:36,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:34:36,594 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 325 [2020-10-28 00:34:36,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:34:36,615 INFO L225 Difference]: With dead ends: 4825 [2020-10-28 00:34:36,615 INFO L226 Difference]: Without dead ends: 4142 [2020-10-28 00:34:36,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:34:36,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4142 states. [2020-10-28 00:34:36,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4142 to 4139. [2020-10-28 00:34:36,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4139 states. [2020-10-28 00:34:36,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4139 states to 4139 states and 6448 transitions. [2020-10-28 00:34:36,754 INFO L78 Accepts]: Start accepts. Automaton has 4139 states and 6448 transitions. Word has length 325 [2020-10-28 00:34:36,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:34:36,755 INFO L481 AbstractCegarLoop]: Abstraction has 4139 states and 6448 transitions. [2020-10-28 00:34:36,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:34:36,755 INFO L276 IsEmpty]: Start isEmpty. Operand 4139 states and 6448 transitions. [2020-10-28 00:34:36,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-28 00:34:36,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:34:36,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:34:36,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 00:34:36,766 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:34:36,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:34:36,767 INFO L82 PathProgramCache]: Analyzing trace with hash 479714806, now seen corresponding path program 1 times [2020-10-28 00:34:36,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:34:36,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349564929] [2020-10-28 00:34:36,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:34:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:36,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:37,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:37,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:37,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:37,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:37,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:38,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:38,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:38,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:38,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:38,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:38,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:38,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:39,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:39,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:39,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:41,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:41,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-28 00:34:41,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 00:34:41,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 00:34:41,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:41,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:34:41,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-28 00:34:41,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-28 00:34:41,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:42,736 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-28 00:34:42,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:34:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:42,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:42,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:42,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:34:42,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:34:42,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 00:34:42,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:42,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:34:42,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:34:42,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:34:42,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:42,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:34:42,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349564929] [2020-10-28 00:34:42,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:34:42,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:34:42,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71985293] [2020-10-28 00:34:42,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:34:42,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:34:42,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:34:42,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:34:42,870 INFO L87 Difference]: Start difference. First operand 4139 states and 6448 transitions. Second operand 4 states. [2020-10-28 00:34:43,658 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 314 [2020-10-28 00:34:48,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:34:48,082 INFO L93 Difference]: Finished difference Result 9129 states and 14344 transitions. [2020-10-28 00:34:48,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:34:48,083 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 325 [2020-10-28 00:34:48,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:34:48,123 INFO L225 Difference]: With dead ends: 9129 [2020-10-28 00:34:48,123 INFO L226 Difference]: Without dead ends: 7854 [2020-10-28 00:34:48,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:34:48,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7854 states. [2020-10-28 00:34:48,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7854 to 7851. [2020-10-28 00:34:48,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7851 states. [2020-10-28 00:34:48,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7851 states to 7851 states and 12200 transitions. [2020-10-28 00:34:48,426 INFO L78 Accepts]: Start accepts. Automaton has 7851 states and 12200 transitions. Word has length 325 [2020-10-28 00:34:48,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:34:48,427 INFO L481 AbstractCegarLoop]: Abstraction has 7851 states and 12200 transitions. [2020-10-28 00:34:48,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:34:48,427 INFO L276 IsEmpty]: Start isEmpty. Operand 7851 states and 12200 transitions. [2020-10-28 00:34:48,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-28 00:34:48,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:34:48,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:34:48,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 00:34:48,449 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:34:48,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:34:48,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1772496259, now seen corresponding path program 1 times [2020-10-28 00:34:48,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:34:48,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536278936] [2020-10-28 00:34:48,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:34:48,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:48,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:49,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:49,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:49,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:49,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:49,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:49,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:49,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:50,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:50,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:50,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:50,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:50,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:50,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:53,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:53,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:53,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-28 00:34:53,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:34:53,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 00:34:53,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:53,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:34:53,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:34:53,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 00:34:53,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:54,475 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-28 00:34:54,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:34:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:54,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:54,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:54,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:34:54,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:34:54,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 00:34:54,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:54,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:34:54,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:34:54,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:34:54,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:54,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:34:54,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536278936] [2020-10-28 00:34:54,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:34:54,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:34:54,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448065474] [2020-10-28 00:34:54,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:34:54,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:34:54,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:34:54,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:34:54,702 INFO L87 Difference]: Start difference. First operand 7851 states and 12200 transitions. Second operand 5 states. [2020-10-28 00:35:01,205 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 319 [2020-10-28 00:35:03,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:35:03,102 INFO L93 Difference]: Finished difference Result 23194 states and 35998 transitions. [2020-10-28 00:35:03,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:35:03,102 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 325 [2020-10-28 00:35:03,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:35:03,166 INFO L225 Difference]: With dead ends: 23194 [2020-10-28 00:35:03,166 INFO L226 Difference]: Without dead ends: 15388 [2020-10-28 00:35:03,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:35:03,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15388 states. [2020-10-28 00:35:03,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15388 to 15385. [2020-10-28 00:35:03,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15385 states. [2020-10-28 00:35:03,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15385 states to 15385 states and 23767 transitions. [2020-10-28 00:35:03,693 INFO L78 Accepts]: Start accepts. Automaton has 15385 states and 23767 transitions. Word has length 325 [2020-10-28 00:35:03,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:35:03,694 INFO L481 AbstractCegarLoop]: Abstraction has 15385 states and 23767 transitions. [2020-10-28 00:35:03,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:35:03,694 INFO L276 IsEmpty]: Start isEmpty. Operand 15385 states and 23767 transitions. [2020-10-28 00:35:03,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-28 00:35:03,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:35:03,723 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:35:03,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 00:35:03,723 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:35:03,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:35:03,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1376502497, now seen corresponding path program 1 times [2020-10-28 00:35:03,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:35:03,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230996621] [2020-10-28 00:35:03,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:35:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:03,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:03,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:04,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:04,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:04,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:04,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:04,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:04,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:04,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:05,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:05,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:05,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:05,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:05,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:05,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:08,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:08,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-28 00:35:08,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:35:08,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 00:35:08,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:35:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 00:35:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 00:35:08,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:09,512 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-28 00:35:09,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:35:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:09,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:09,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:09,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:35:09,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:35:09,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 00:35:09,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:09,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:35:09,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:35:09,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:35:09,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:09,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:35:09,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230996621] [2020-10-28 00:35:09,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:35:09,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:35:09,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711509042] [2020-10-28 00:35:09,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:35:09,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:35:09,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:35:09,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:35:09,695 INFO L87 Difference]: Start difference. First operand 15385 states and 23767 transitions. Second operand 4 states. [2020-10-28 00:35:17,027 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 318 [2020-10-28 00:35:19,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:35:19,193 INFO L93 Difference]: Finished difference Result 45339 states and 69920 transitions. [2020-10-28 00:35:19,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:35:19,194 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2020-10-28 00:35:19,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:35:19,262 INFO L225 Difference]: With dead ends: 45339 [2020-10-28 00:35:19,262 INFO L226 Difference]: Without dead ends: 30075 [2020-10-28 00:35:19,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:35:19,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30075 states. [2020-10-28 00:35:20,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30075 to 30072. [2020-10-28 00:35:20,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30072 states. [2020-10-28 00:35:20,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30072 states to 30072 states and 46160 transitions. [2020-10-28 00:35:20,275 INFO L78 Accepts]: Start accepts. Automaton has 30072 states and 46160 transitions. Word has length 327 [2020-10-28 00:35:20,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:35:20,276 INFO L481 AbstractCegarLoop]: Abstraction has 30072 states and 46160 transitions. [2020-10-28 00:35:20,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:35:20,276 INFO L276 IsEmpty]: Start isEmpty. Operand 30072 states and 46160 transitions. [2020-10-28 00:35:20,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-28 00:35:20,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:35:20,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:35:20,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 00:35:20,332 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:35:20,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:35:20,332 INFO L82 PathProgramCache]: Analyzing trace with hash 64003450, now seen corresponding path program 1 times [2020-10-28 00:35:20,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:35:20,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218401620] [2020-10-28 00:35:20,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:35:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:20,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:20,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:20,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:20,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:21,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:21,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:21,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:21,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:21,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:21,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:21,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:21,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:21,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:21,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:25,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:25,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-28 00:35:25,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:35:25,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 00:35:25,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:25,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:35:25,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 00:35:25,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 00:35:25,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:26,106 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-28 00:35:26,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:35:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:26,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:26,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:26,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:35:26,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:35:26,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 00:35:26,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:26,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:35:26,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:35:26,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:35:26,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:26,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:35:26,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218401620] [2020-10-28 00:35:26,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:35:26,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:35:26,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857126467] [2020-10-28 00:35:26,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:35:26,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:35:26,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:35:26,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:35:26,206 INFO L87 Difference]: Start difference. First operand 30072 states and 46160 transitions. Second operand 4 states. [2020-10-28 00:35:35,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:35:35,587 INFO L93 Difference]: Finished difference Result 89996 states and 138096 transitions. [2020-10-28 00:35:35,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 00:35:35,588 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2020-10-28 00:35:35,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:35:35,719 INFO L225 Difference]: With dead ends: 89996 [2020-10-28 00:35:35,719 INFO L226 Difference]: Without dead ends: 60036 [2020-10-28 00:35:35,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:35:35,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60036 states. [2020-10-28 00:35:37,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60036 to 30085. [2020-10-28 00:35:37,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30085 states. [2020-10-28 00:35:37,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30085 states to 30085 states and 46176 transitions. [2020-10-28 00:35:37,190 INFO L78 Accepts]: Start accepts. Automaton has 30085 states and 46176 transitions. Word has length 327 [2020-10-28 00:35:37,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:35:37,191 INFO L481 AbstractCegarLoop]: Abstraction has 30085 states and 46176 transitions. [2020-10-28 00:35:37,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:35:37,191 INFO L276 IsEmpty]: Start isEmpty. Operand 30085 states and 46176 transitions. [2020-10-28 00:35:37,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-28 00:35:37,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:35:37,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:35:37,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 00:35:37,236 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:35:37,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:35:37,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1245507560, now seen corresponding path program 1 times [2020-10-28 00:35:37,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:35:37,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143597091] [2020-10-28 00:35:37,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:35:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:37,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:37,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:37,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:38,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:38,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:38,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:38,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:38,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:38,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:38,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:38,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:38,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:39,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:39,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:41,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:41,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:41,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:41,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:42,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:42,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-28 00:35:42,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-28 00:35:42,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-28 00:35:42,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:42,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:35:42,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 00:35:42,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 00:35:42,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:43,161 WARN L193 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-28 00:35:43,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:35:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:43,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:43,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:43,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:35:43,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:35:43,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 00:35:43,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:43,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:35:43,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:35:43,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:35:43,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:43,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:35:43,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143597091] [2020-10-28 00:35:43,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:35:43,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:35:43,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435927919] [2020-10-28 00:35:43,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:35:43,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:35:43,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:35:43,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:35:43,323 INFO L87 Difference]: Start difference. First operand 30085 states and 46176 transitions. Second operand 5 states. [2020-10-28 00:35:53,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:35:53,591 INFO L93 Difference]: Finished difference Result 89759 states and 137663 transitions. [2020-10-28 00:35:53,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:35:53,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 328 [2020-10-28 00:35:53,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:35:53,714 INFO L225 Difference]: With dead ends: 89759 [2020-10-28 00:35:53,714 INFO L226 Difference]: Without dead ends: 60022 [2020-10-28 00:35:53,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:35:53,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60022 states. [2020-10-28 00:35:55,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60022 to 30347. [2020-10-28 00:35:55,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30347 states. [2020-10-28 00:35:55,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30347 states to 30347 states and 46638 transitions. [2020-10-28 00:35:55,283 INFO L78 Accepts]: Start accepts. Automaton has 30347 states and 46638 transitions. Word has length 328 [2020-10-28 00:35:55,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:35:55,284 INFO L481 AbstractCegarLoop]: Abstraction has 30347 states and 46638 transitions. [2020-10-28 00:35:55,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:35:55,284 INFO L276 IsEmpty]: Start isEmpty. Operand 30347 states and 46638 transitions. [2020-10-28 00:35:55,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-28 00:35:55,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:35:55,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:35:55,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 00:35:55,313 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:35:55,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:35:55,314 INFO L82 PathProgramCache]: Analyzing trace with hash -941194779, now seen corresponding path program 1 times [2020-10-28 00:35:55,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:35:55,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356647923] [2020-10-28 00:35:55,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:35:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:55,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:55,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:55,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:55,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:55,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:55,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:56,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:56,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:56,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:56,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:56,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:56,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:57,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:57,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:57,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:57,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:00,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:00,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-28 00:36:00,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 00:36:00,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-28 00:36:00,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:00,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:36:00,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 00:36:00,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-28 00:36:00,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:01,209 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-28 00:36:01,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:36:01,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:01,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:01,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:01,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:36:01,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:36:01,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:36:01,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:01,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:36:01,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:36:01,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:36:01,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:01,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:36:01,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356647923] [2020-10-28 00:36:01,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:36:01,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:36:01,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650797224] [2020-10-28 00:36:01,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:36:01,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:36:01,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:36:01,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:36:01,363 INFO L87 Difference]: Start difference. First operand 30347 states and 46638 transitions. Second operand 4 states. [2020-10-28 00:36:10,217 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 318 [2020-10-28 00:36:12,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:36:12,545 INFO L93 Difference]: Finished difference Result 86190 states and 132219 transitions. [2020-10-28 00:36:12,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:36:12,546 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 328 [2020-10-28 00:36:12,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:36:12,625 INFO L225 Difference]: With dead ends: 86190 [2020-10-28 00:36:12,625 INFO L226 Difference]: Without dead ends: 56059 [2020-10-28 00:36:12,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:36:12,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56059 states. [2020-10-28 00:36:15,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56059 to 56056. [2020-10-28 00:36:15,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56056 states. [2020-10-28 00:36:15,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56056 states to 56056 states and 85534 transitions. [2020-10-28 00:36:15,491 INFO L78 Accepts]: Start accepts. Automaton has 56056 states and 85534 transitions. Word has length 328 [2020-10-28 00:36:15,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:36:15,492 INFO L481 AbstractCegarLoop]: Abstraction has 56056 states and 85534 transitions. [2020-10-28 00:36:15,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:36:15,492 INFO L276 IsEmpty]: Start isEmpty. Operand 56056 states and 85534 transitions. [2020-10-28 00:36:15,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-28 00:36:15,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:36:15,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:36:15,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 00:36:15,549 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:36:15,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:36:15,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1409136585, now seen corresponding path program 1 times [2020-10-28 00:36:15,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:36:15,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796470319] [2020-10-28 00:36:15,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:36:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:15,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:15,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:15,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:15,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:15,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:16,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:16,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:16,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:16,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:16,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:16,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:16,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:17,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:17,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:17,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:17,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:17,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:17,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:20,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:20,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-28 00:36:20,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-28 00:36:20,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 00:36:20,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:20,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:36:20,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 00:36:20,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 00:36:20,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:21,336 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-28 00:36:21,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:36:21,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:21,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:21,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:21,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:36:21,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:36:21,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:36:21,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:21,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:36:21,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:36:21,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:36:21,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:21,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:36:21,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796470319] [2020-10-28 00:36:21,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:36:21,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:36:21,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912080287] [2020-10-28 00:36:21,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:36:21,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:36:21,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:36:21,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:36:21,423 INFO L87 Difference]: Start difference. First operand 56056 states and 85534 transitions. Second operand 4 states. [2020-10-28 00:36:33,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:36:33,484 INFO L93 Difference]: Finished difference Result 165934 states and 252656 transitions. [2020-10-28 00:36:33,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 00:36:33,484 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 330 [2020-10-28 00:36:33,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:36:33,627 INFO L225 Difference]: With dead ends: 165934 [2020-10-28 00:36:33,627 INFO L226 Difference]: Without dead ends: 110998 [2020-10-28 00:36:33,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:36:33,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110998 states. [2020-10-28 00:36:36,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110998 to 56161. [2020-10-28 00:36:36,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56161 states. [2020-10-28 00:36:36,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56161 states to 56161 states and 85668 transitions. [2020-10-28 00:36:36,715 INFO L78 Accepts]: Start accepts. Automaton has 56161 states and 85668 transitions. Word has length 330 [2020-10-28 00:36:36,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:36:36,715 INFO L481 AbstractCegarLoop]: Abstraction has 56161 states and 85668 transitions. [2020-10-28 00:36:36,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:36:36,715 INFO L276 IsEmpty]: Start isEmpty. Operand 56161 states and 85668 transitions. [2020-10-28 00:36:36,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-28 00:36:36,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:36:36,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:36:36,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 00:36:36,770 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:36:36,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:36:36,771 INFO L82 PathProgramCache]: Analyzing trace with hash -654391279, now seen corresponding path program 1 times [2020-10-28 00:36:36,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:36:36,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123674239] [2020-10-28 00:36:36,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:36:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:36,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:36,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:37,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:37,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:37,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:37,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:37,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:37,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:37,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:38,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:38,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:38,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:38,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:38,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:38,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:38,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:40,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:40,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:41,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:41,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-28 00:36:41,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-28 00:36:41,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 00:36:41,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:41,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:36:41,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-28 00:36:41,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 00:36:41,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:42,639 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-28 00:36:42,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:36:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:42,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:42,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:42,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:36:42,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:36:42,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:36:42,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:42,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:36:42,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:36:42,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:36:42,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:42,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:36:42,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123674239] [2020-10-28 00:36:42,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:36:42,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:36:42,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302796376] [2020-10-28 00:36:42,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:36:42,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:36:42,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:36:42,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:36:42,745 INFO L87 Difference]: Start difference. First operand 56161 states and 85668 transitions. Second operand 5 states. [2020-10-28 00:36:49,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:36:49,459 INFO L93 Difference]: Finished difference Result 107580 states and 163841 transitions. [2020-10-28 00:36:49,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:36:49,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 331 [2020-10-28 00:36:49,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:36:49,512 INFO L225 Difference]: With dead ends: 107580 [2020-10-28 00:36:49,513 INFO L226 Difference]: Without dead ends: 52630 [2020-10-28 00:36:49,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:36:49,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52630 states. [2020-10-28 00:36:51,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52630 to 52594. [2020-10-28 00:36:51,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52594 states. [2020-10-28 00:36:51,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52594 states to 52594 states and 80201 transitions. [2020-10-28 00:36:51,960 INFO L78 Accepts]: Start accepts. Automaton has 52594 states and 80201 transitions. Word has length 331 [2020-10-28 00:36:51,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:36:51,960 INFO L481 AbstractCegarLoop]: Abstraction has 52594 states and 80201 transitions. [2020-10-28 00:36:51,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:36:51,960 INFO L276 IsEmpty]: Start isEmpty. Operand 52594 states and 80201 transitions. [2020-10-28 00:36:51,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-28 00:36:51,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:36:51,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:36:51,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 00:36:51,997 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:36:51,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:36:51,997 INFO L82 PathProgramCache]: Analyzing trace with hash -192951898, now seen corresponding path program 1 times [2020-10-28 00:36:51,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:36:51,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957848613] [2020-10-28 00:36:51,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:36:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:52,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:52,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:52,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:52,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:52,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:53,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:53,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:53,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:53,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:53,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:53,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:53,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:53,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:53,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:56,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:56,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:57,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:57,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-28 00:36:57,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 00:36:57,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 00:36:57,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:57,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:36:57,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-28 00:36:57,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 00:36:57,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:57,794 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-28 00:36:57,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:36:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:57,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:57,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:57,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:36:57,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:36:57,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:36:57,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:57,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:36:57,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:36:57,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:36:57,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:57,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:36:57,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957848613] [2020-10-28 00:36:57,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:36:57,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:36:57,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060173152] [2020-10-28 00:36:57,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:36:57,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:36:57,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:36:57,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:36:57,904 INFO L87 Difference]: Start difference. First operand 52594 states and 80201 transitions. Second operand 4 states. [2020-10-28 00:37:06,981 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 318 [2020-10-28 00:37:07,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:37:07,947 INFO L93 Difference]: Finished difference Result 131166 states and 201113 transitions. [2020-10-28 00:37:07,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:37:07,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 331 [2020-10-28 00:37:07,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:37:08,063 INFO L225 Difference]: With dead ends: 131166 [2020-10-28 00:37:08,063 INFO L226 Difference]: Without dead ends: 80629 [2020-10-28 00:37:08,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:37:08,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80629 states. [2020-10-28 00:37:11,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80629 to 66498. [2020-10-28 00:37:11,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66498 states. [2020-10-28 00:37:12,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66498 states to 66498 states and 102943 transitions. [2020-10-28 00:37:12,012 INFO L78 Accepts]: Start accepts. Automaton has 66498 states and 102943 transitions. Word has length 331 [2020-10-28 00:37:12,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:37:12,012 INFO L481 AbstractCegarLoop]: Abstraction has 66498 states and 102943 transitions. [2020-10-28 00:37:12,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:37:12,013 INFO L276 IsEmpty]: Start isEmpty. Operand 66498 states and 102943 transitions. [2020-10-28 00:37:12,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-28 00:37:12,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:37:12,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:37:12,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 00:37:12,048 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:37:12,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:37:12,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1910804235, now seen corresponding path program 1 times [2020-10-28 00:37:12,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:37:12,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883853454] [2020-10-28 00:37:12,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:37:12,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:12,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:12,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:12,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:12,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:12,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:12,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:12,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:12,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:12,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:12,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:13,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:13,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:13,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:13,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:13,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:13,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:17,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:17,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-28 00:37:17,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 00:37:17,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 00:37:17,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:17,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 00:37:17,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 00:37:17,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 00:37:17,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:37:18,007 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-28 00:37:18,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:37:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:18,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:18,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:18,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:37:18,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:37:18,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:37:18,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:37:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:37:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:37:18,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:37:18,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:37:18,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883853454] [2020-10-28 00:37:18,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:37:18,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 00:37:18,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324509834] [2020-10-28 00:37:18,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 00:37:18,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:37:18,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 00:37:18,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-28 00:37:18,111 INFO L87 Difference]: Start difference. First operand 66498 states and 102943 transitions. Second operand 10 states. [2020-10-28 00:37:19,712 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 318 DAG size of output: 317 [2020-10-28 00:37:33,407 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 320 DAG size of output: 317 [2020-10-28 00:37:34,949 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 319 DAG size of output: 317 [2020-10-28 00:37:35,735 WARN L193 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 316