/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 14:06:54,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 14:06:54,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 14:06:54,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 14:06:54,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 14:06:54,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 14:06:54,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 14:06:54,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 14:06:54,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 14:06:54,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 14:06:54,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 14:06:54,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 14:06:54,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 14:06:54,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 14:06:54,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 14:06:54,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 14:06:54,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 14:06:54,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 14:06:54,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 14:06:54,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 14:06:54,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 14:06:54,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 14:06:54,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 14:06:54,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 14:06:54,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 14:06:54,385 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 14:06:54,385 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 14:06:54,386 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 14:06:54,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 14:06:54,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 14:06:54,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 14:06:54,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 14:06:54,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 14:06:54,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 14:06:54,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 14:06:54,401 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 14:06:54,403 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 14:06:54,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 14:06:54,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 14:06:54,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 14:06:54,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 14:06:54,410 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 [2020-10-29 14:06:54,466 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 14:06:54,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 14:06:54,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 14:06:54,469 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 14:06:54,470 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 14:06:54,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 14:06:54,470 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 14:06:54,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 14:06:54,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 14:06:54,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 14:06:54,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 14:06:54,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 14:06:54,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 14:06:54,473 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 14:06:54,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 14:06:54,473 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 14:06:54,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 14:06:54,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 14:06:54,474 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 14:06:54,474 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 14:06:54,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 14:06:54,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:06:54,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 14:06:54,475 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 14:06:54,475 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 14:06:54,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 14:06:54,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 14:06:54,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 14:06:54,484 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 14:06:54,484 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 14:06:54,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 14:06:54,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 14:06:54,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 14:06:54,989 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 14:06:54,990 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 14:06:54,991 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-29 14:06:55,067 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01160a8af/3cf3b6d635a54a92a0a5a35a7e961eae/FLAGb3ebae2ef [2020-10-29 14:06:55,895 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 14:06:55,895 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-29 14:06:55,924 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01160a8af/3cf3b6d635a54a92a0a5a35a7e961eae/FLAGb3ebae2ef [2020-10-29 14:06:56,133 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01160a8af/3cf3b6d635a54a92a0a5a35a7e961eae [2020-10-29 14:06:56,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 14:06:56,144 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 14:06:56,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 14:06:56,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 14:06:56,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 14:06:56,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:06:56" (1/1) ... [2020-10-29 14:06:56,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72b1442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:56, skipping insertion in model container [2020-10-29 14:06:56,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:06:56" (1/1) ... [2020-10-29 14:06:56,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 14:06:56,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 14:06:56,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:06:56,682 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 14:06:56,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:06:56,935 INFO L208 MainTranslator]: Completed translation [2020-10-29 14:06:56,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:56 WrapperNode [2020-10-29 14:06:56,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 14:06:56,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 14:06:56,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 14:06:56,937 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 14:06:56,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:56" (1/1) ... [2020-10-29 14:06:56,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:56" (1/1) ... [2020-10-29 14:06:56,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:56" (1/1) ... [2020-10-29 14:06:56,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:56" (1/1) ... [2020-10-29 14:06:57,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:56" (1/1) ... [2020-10-29 14:06:57,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:56" (1/1) ... [2020-10-29 14:06:57,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:56" (1/1) ... [2020-10-29 14:06:57,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 14:06:57,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 14:06:57,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 14:06:57,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 14:06:57,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:56" (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 [2020-10-29 14:06:57,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 14:06:57,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 14:06:57,160 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 14:06:57,160 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 14:06:57,161 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 14:06:57,162 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 14:06:57,162 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 14:06:57,162 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 14:06:57,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 14:06:57,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 14:06:57,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 14:06:57,164 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 14:06:57,164 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 14:06:57,165 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 14:06:57,165 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 14:06:57,167 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 14:06:57,168 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 14:06:57,168 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 14:06:57,168 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 14:06:57,168 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 14:06:57,168 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 14:06:57,168 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 14:06:57,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 14:06:57,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 14:06:57,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 14:06:57,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 14:06:57,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 14:06:57,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 14:06:58,715 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 14:06:58,716 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 14:06:58,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:06:58 BoogieIcfgContainer [2020-10-29 14:06:58,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 14:06:58,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 14:06:58,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 14:06:58,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 14:06:58,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 02:06:56" (1/3) ... [2020-10-29 14:06:58,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57544b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:06:58, skipping insertion in model container [2020-10-29 14:06:58,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:06:56" (2/3) ... [2020-10-29 14:06:58,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57544b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:06:58, skipping insertion in model container [2020-10-29 14:06:58,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:06:58" (3/3) ... [2020-10-29 14:06:58,729 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-29 14:06:58,742 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 14:06:58,749 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 14:06:58,764 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 14:06:58,795 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 14:06:58,795 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 14:06:58,796 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 14:06:58,796 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 14:06:58,796 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 14:06:58,796 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 14:06:58,796 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 14:06:58,796 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 14:06:58,823 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states. [2020-10-29 14:06:58,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 14:06:58,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:06:58,851 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] [2020-10-29 14:06:58,852 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:06:58,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:06:58,858 INFO L82 PathProgramCache]: Analyzing trace with hash -566979542, now seen corresponding path program 1 times [2020-10-29 14:06:58,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:06:58,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819617507] [2020-10-29 14:06:58,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:06:59,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:06:59,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:06:59,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:00,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:01,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:01,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:04,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:04,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 14:07:04,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 14:07:04,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-29 14:07:04,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:04,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:04,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:07:04,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-29 14:07:04,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 14:07:04,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 14:07:05,307 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:07:05,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:07:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:05,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:05,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:05,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:07:05,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:07:05,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 14:07:05,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:05,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:05,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:07:05,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:07:05,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:07:05,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:07:05,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:07:05,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819617507] [2020-10-29 14:07:05,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:07:05,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:07:05,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815615278] [2020-10-29 14:07:05,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:07:05,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:07:05,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:07:05,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:07:05,456 INFO L87 Difference]: Start difference. First operand 351 states. Second operand 4 states. [2020-10-29 14:07:06,206 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification that was a NOOP. DAG size: 294 [2020-10-29 14:07:08,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:07:08,807 INFO L93 Difference]: Finished difference Result 643 states and 1110 transitions. [2020-10-29 14:07:08,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:07:08,810 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-10-29 14:07:08,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:07:08,846 INFO L225 Difference]: With dead ends: 643 [2020-10-29 14:07:08,847 INFO L226 Difference]: Without dead ends: 481 [2020-10-29 14:07:08,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:07:08,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-29 14:07:08,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 478. [2020-10-29 14:07:08,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-10-29 14:07:09,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 792 transitions. [2020-10-29 14:07:09,002 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 792 transitions. Word has length 123 [2020-10-29 14:07:09,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:07:09,004 INFO L481 AbstractCegarLoop]: Abstraction has 478 states and 792 transitions. [2020-10-29 14:07:09,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:07:09,006 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 792 transitions. [2020-10-29 14:07:09,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-29 14:07:09,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:07:09,016 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] [2020-10-29 14:07:09,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 14:07:09,016 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:07:09,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:07:09,017 INFO L82 PathProgramCache]: Analyzing trace with hash 197511942, now seen corresponding path program 1 times [2020-10-29 14:07:09,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:07:09,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912839933] [2020-10-29 14:07:09,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:07:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:09,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:09,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:09,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:10,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:10,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:13,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:14,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:14,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 14:07:14,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:07:14,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-29 14:07:14,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:14,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:14,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:07:14,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:07:14,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 14:07:14,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 14:07:14,950 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:07:14,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:07:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:14,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:14,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:14,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:07:14,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:07:14,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 14:07:14,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:14,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:14,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:07:14,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:07:14,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:07:14,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:15,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:07:15,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912839933] [2020-10-29 14:07:15,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:07:15,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:07:15,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592727620] [2020-10-29 14:07:15,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:07:15,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:07:15,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:07:15,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:07:15,074 INFO L87 Difference]: Start difference. First operand 478 states and 792 transitions. Second operand 5 states. [2020-10-29 14:07:18,206 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:07:18,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:07:18,338 INFO L93 Difference]: Finished difference Result 1352 states and 2235 transitions. [2020-10-29 14:07:18,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:07:18,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-29 14:07:18,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:07:18,351 INFO L225 Difference]: With dead ends: 1352 [2020-10-29 14:07:18,351 INFO L226 Difference]: Without dead ends: 915 [2020-10-29 14:07:18,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:07:18,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2020-10-29 14:07:18,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 912. [2020-10-29 14:07:18,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 912 states. [2020-10-29 14:07:18,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1502 transitions. [2020-10-29 14:07:18,437 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1502 transitions. Word has length 126 [2020-10-29 14:07:18,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:07:18,439 INFO L481 AbstractCegarLoop]: Abstraction has 912 states and 1502 transitions. [2020-10-29 14:07:18,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:07:18,440 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1502 transitions. [2020-10-29 14:07:18,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-29 14:07:18,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:07:18,444 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] [2020-10-29 14:07:18,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 14:07:18,444 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:07:18,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:07:18,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1593021485, now seen corresponding path program 1 times [2020-10-29 14:07:18,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:07:18,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910589679] [2020-10-29 14:07:18,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:07:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:18,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:18,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:18,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:19,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:19,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:22,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:22,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:23,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:23,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 14:07:23,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:07:23,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-29 14:07:23,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:23,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:23,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:07:23,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:07:23,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 14:07:23,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:24,464 WARN L193 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:07:24,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:07:24,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:24,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:24,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:24,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:07:24,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:07:24,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 14:07:24,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:24,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:24,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:07:24,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:07:24,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:07:24,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:07:24,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:07:24,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910589679] [2020-10-29 14:07:24,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:07:24,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:07:24,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519018895] [2020-10-29 14:07:24,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:07:24,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:07:24,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:07:24,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:07:24,627 INFO L87 Difference]: Start difference. First operand 912 states and 1502 transitions. Second operand 5 states. [2020-10-29 14:07:27,872 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:07:28,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:07:28,005 INFO L93 Difference]: Finished difference Result 2604 states and 4278 transitions. [2020-10-29 14:07:28,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:07:28,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-29 14:07:28,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:07:28,017 INFO L225 Difference]: With dead ends: 2604 [2020-10-29 14:07:28,017 INFO L226 Difference]: Without dead ends: 1755 [2020-10-29 14:07:28,020 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 [2020-10-29 14:07:28,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states. [2020-10-29 14:07:28,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 1752. [2020-10-29 14:07:28,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1752 states. [2020-10-29 14:07:28,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1752 states to 1752 states and 2864 transitions. [2020-10-29 14:07:28,129 INFO L78 Accepts]: Start accepts. Automaton has 1752 states and 2864 transitions. Word has length 127 [2020-10-29 14:07:28,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:07:28,130 INFO L481 AbstractCegarLoop]: Abstraction has 1752 states and 2864 transitions. [2020-10-29 14:07:28,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:07:28,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1752 states and 2864 transitions. [2020-10-29 14:07:28,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-29 14:07:28,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:07:28,135 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] [2020-10-29 14:07:28,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 14:07:28,135 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:07:28,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:07:28,136 INFO L82 PathProgramCache]: Analyzing trace with hash -779574682, now seen corresponding path program 1 times [2020-10-29 14:07:28,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:07:28,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663409707] [2020-10-29 14:07:28,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:07:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:28,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:28,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:28,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:28,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:28,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:29,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:33,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:33,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 14:07:33,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:07:33,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-29 14:07:33,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:33,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:33,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:07:33,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:07:33,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 14:07:33,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:34,007 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:07:34,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:07:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:34,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:34,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:34,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:07:34,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:07:34,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 14:07:34,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:34,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:34,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:07:34,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:07:34,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:07:34,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:34,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:07:34,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663409707] [2020-10-29 14:07:34,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:07:34,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:07:34,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048385398] [2020-10-29 14:07:34,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:07:34,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:07:34,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:07:34,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:07:34,128 INFO L87 Difference]: Start difference. First operand 1752 states and 2864 transitions. Second operand 5 states. [2020-10-29 14:07:37,551 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:07:37,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:07:37,696 INFO L93 Difference]: Finished difference Result 5112 states and 8343 transitions. [2020-10-29 14:07:37,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:07:37,697 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-29 14:07:37,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:07:37,717 INFO L225 Difference]: With dead ends: 5112 [2020-10-29 14:07:37,720 INFO L226 Difference]: Without dead ends: 3419 [2020-10-29 14:07:37,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:07:37,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3419 states. [2020-10-29 14:07:37,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3419 to 3416. [2020-10-29 14:07:37,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3416 states. [2020-10-29 14:07:37,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3416 states to 3416 states and 5545 transitions. [2020-10-29 14:07:37,950 INFO L78 Accepts]: Start accepts. Automaton has 3416 states and 5545 transitions. Word has length 127 [2020-10-29 14:07:37,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:07:37,951 INFO L481 AbstractCegarLoop]: Abstraction has 3416 states and 5545 transitions. [2020-10-29 14:07:37,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:07:37,951 INFO L276 IsEmpty]: Start isEmpty. Operand 3416 states and 5545 transitions. [2020-10-29 14:07:37,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-29 14:07:37,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:07:37,958 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] [2020-10-29 14:07:37,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 14:07:37,959 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:07:37,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:07:37,960 INFO L82 PathProgramCache]: Analyzing trace with hash -396425256, now seen corresponding path program 1 times [2020-10-29 14:07:37,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:07:37,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237421916] [2020-10-29 14:07:37,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:07:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:38,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:38,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:38,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:38,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:38,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:40,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:40,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:43,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:43,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 14:07:43,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:07:43,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 14:07:43,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:43,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:43,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:07:43,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:07:43,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 14:07:43,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:43,700 WARN L193 SmtUtils]: Spent 583.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:07:43,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:07:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:43,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:43,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:43,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:07:43,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:07:43,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 14:07:43,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:43,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:43,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:07:43,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:07:43,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:07:43,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:43,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:07:43,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237421916] [2020-10-29 14:07:43,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:07:43,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:07:43,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929434528] [2020-10-29 14:07:43,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:07:43,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:07:43,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:07:43,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:07:43,840 INFO L87 Difference]: Start difference. First operand 3416 states and 5545 transitions. Second operand 5 states. [2020-10-29 14:07:47,056 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:07:47,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:07:47,261 INFO L93 Difference]: Finished difference Result 9928 states and 16094 transitions. [2020-10-29 14:07:47,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:07:47,262 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-29 14:07:47,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:07:47,294 INFO L225 Difference]: With dead ends: 9928 [2020-10-29 14:07:47,294 INFO L226 Difference]: Without dead ends: 6693 [2020-10-29 14:07:47,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:07:47,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6693 states. [2020-10-29 14:07:47,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6693 to 6690. [2020-10-29 14:07:47,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6690 states. [2020-10-29 14:07:47,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6690 states to 6690 states and 10788 transitions. [2020-10-29 14:07:47,693 INFO L78 Accepts]: Start accepts. Automaton has 6690 states and 10788 transitions. Word has length 128 [2020-10-29 14:07:47,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:07:47,694 INFO L481 AbstractCegarLoop]: Abstraction has 6690 states and 10788 transitions. [2020-10-29 14:07:47,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:07:47,694 INFO L276 IsEmpty]: Start isEmpty. Operand 6690 states and 10788 transitions. [2020-10-29 14:07:47,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-29 14:07:47,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:07:47,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:07:47,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 14:07:47,707 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:07:47,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:07:47,708 INFO L82 PathProgramCache]: Analyzing trace with hash 2069090806, now seen corresponding path program 1 times [2020-10-29 14:07:47,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:07:47,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366692916] [2020-10-29 14:07:47,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:07:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:47,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:47,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:48,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:48,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:48,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:49,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:52,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:52,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 14:07:52,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:07:52,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 14:07:52,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:52,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:52,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:07:52,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:07:52,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 14:07:52,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:53,553 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:07:53,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:07:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:53,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:53,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:07:53,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:07:53,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:07:53,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 14:07:53,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:07:53,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:07:53,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:07:53,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:07:53,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:07:53,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:07:53,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:07:53,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366692916] [2020-10-29 14:07:53,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:07:53,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:07:53,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803096928] [2020-10-29 14:07:53,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:07:53,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:07:53,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:07:53,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:07:53,659 INFO L87 Difference]: Start difference. First operand 6690 states and 10788 transitions. Second operand 5 states. [2020-10-29 14:07:56,887 WARN L193 SmtUtils]: Spent 631.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:07:57,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:07:57,117 INFO L93 Difference]: Finished difference Result 19544 states and 31474 transitions. [2020-10-29 14:07:57,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:07:57,118 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-29 14:07:57,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:07:57,183 INFO L225 Difference]: With dead ends: 19544 [2020-10-29 14:07:57,183 INFO L226 Difference]: Without dead ends: 12965 [2020-10-29 14:07:57,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:07:57,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12965 states. [2020-10-29 14:07:57,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12965 to 12962. [2020-10-29 14:07:57,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12962 states. [2020-10-29 14:07:58,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12962 states to 12962 states and 20750 transitions. [2020-10-29 14:07:58,042 INFO L78 Accepts]: Start accepts. Automaton has 12962 states and 20750 transitions. Word has length 128 [2020-10-29 14:07:58,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:07:58,042 INFO L481 AbstractCegarLoop]: Abstraction has 12962 states and 20750 transitions. [2020-10-29 14:07:58,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:07:58,042 INFO L276 IsEmpty]: Start isEmpty. Operand 12962 states and 20750 transitions. [2020-10-29 14:07:58,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-29 14:07:58,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:07:58,064 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] [2020-10-29 14:07:58,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 14:07:58,064 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:07:58,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:07:58,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1933540526, now seen corresponding path program 1 times [2020-10-29 14:07:58,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:07:58,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404222293] [2020-10-29 14:07:58,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:07:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:07:58,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:58,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:58,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:58,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:58,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:58,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:07:58,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:03,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:08:03,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 14:08:03,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:08:03,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-29 14:08:03,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:08:03,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:08:03,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:08:03,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-29 14:08:03,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 14:08:03,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:08:03,953 WARN L193 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:08:03,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:08:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:08:03,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:03,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:08:03,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:08:03,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:08:03,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 14:08:03,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:08:03,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:08:03,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:08:03,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:08:03,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:08:03,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:08:04,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:08:04,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404222293] [2020-10-29 14:08:04,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:08:04,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:08:04,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444563546] [2020-10-29 14:08:04,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:08:04,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:08:04,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:08:04,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:08:04,039 INFO L87 Difference]: Start difference. First operand 12962 states and 20750 transitions. Second operand 4 states. [2020-10-29 14:08:04,685 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification that was a NOOP. DAG size: 294 [2020-10-29 14:08:07,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:08:07,256 INFO L93 Difference]: Finished difference Result 28168 states and 46066 transitions. [2020-10-29 14:08:07,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:08:07,257 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-10-29 14:08:07,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:08:07,308 INFO L225 Difference]: With dead ends: 28168 [2020-10-29 14:08:07,309 INFO L226 Difference]: Without dead ends: 20197 [2020-10-29 14:08:07,331 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 [2020-10-29 14:08:07,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20197 states. [2020-10-29 14:08:08,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20197 to 20194. [2020-10-29 14:08:08,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20194 states. [2020-10-29 14:08:08,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20194 states to 20194 states and 32430 transitions. [2020-10-29 14:08:08,448 INFO L78 Accepts]: Start accepts. Automaton has 20194 states and 32430 transitions. Word has length 129 [2020-10-29 14:08:08,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:08:08,449 INFO L481 AbstractCegarLoop]: Abstraction has 20194 states and 32430 transitions. [2020-10-29 14:08:08,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:08:08,449 INFO L276 IsEmpty]: Start isEmpty. Operand 20194 states and 32430 transitions. [2020-10-29 14:08:08,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-29 14:08:08,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:08:08,477 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] [2020-10-29 14:08:08,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 14:08:08,477 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:08:08,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:08:08,478 INFO L82 PathProgramCache]: Analyzing trace with hash -255815496, now seen corresponding path program 1 times [2020-10-29 14:08:08,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:08:08,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102789319] [2020-10-29 14:08:08,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:08:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:08:08,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:08,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:08,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:08,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:08,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:09,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:12,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:12,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:12,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:13,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:08:13,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-29 14:08:13,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:08:13,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 14:08:13,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:08:13,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:08:13,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:08:13,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:08:13,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 14:08:13,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:08:14,249 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:08:14,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:08:14,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:08:14,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:14,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:08:14,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:08:14,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:08:14,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 14:08:14,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:08:14,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:08:14,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:08:14,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:08:14,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:08:14,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:08:14,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:08:14,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102789319] [2020-10-29 14:08:14,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:08:14,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:08:14,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486690288] [2020-10-29 14:08:14,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:08:14,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:08:14,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:08:14,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:08:14,468 INFO L87 Difference]: Start difference. First operand 20194 states and 32430 transitions. Second operand 5 states. [2020-10-29 14:08:18,490 WARN L193 SmtUtils]: Spent 787.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:08:19,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:08:19,186 INFO L93 Difference]: Finished difference Result 59433 states and 95391 transitions. [2020-10-29 14:08:19,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:08:19,186 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-29 14:08:19,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:08:19,256 INFO L225 Difference]: With dead ends: 59433 [2020-10-29 14:08:19,256 INFO L226 Difference]: Without dead ends: 39282 [2020-10-29 14:08:19,299 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 [2020-10-29 14:08:19,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39282 states. [2020-10-29 14:08:21,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39282 to 39279. [2020-10-29 14:08:21,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39279 states. [2020-10-29 14:08:21,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39279 states to 39279 states and 62682 transitions. [2020-10-29 14:08:21,969 INFO L78 Accepts]: Start accepts. Automaton has 39279 states and 62682 transitions. Word has length 132 [2020-10-29 14:08:21,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:08:21,969 INFO L481 AbstractCegarLoop]: Abstraction has 39279 states and 62682 transitions. [2020-10-29 14:08:21,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:08:21,970 INFO L276 IsEmpty]: Start isEmpty. Operand 39279 states and 62682 transitions. [2020-10-29 14:08:22,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-29 14:08:22,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:08:22,015 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] [2020-10-29 14:08:22,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 14:08:22,016 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:08:22,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:08:22,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1961015567, now seen corresponding path program 1 times [2020-10-29 14:08:22,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:08:22,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16188277] [2020-10-29 14:08:22,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:08:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:08:22,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:22,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:22,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:22,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:23,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:23,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:25,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:25,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:25,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:27,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:08:27,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 14:08:27,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:08:27,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 14:08:27,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:08:27,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:08:27,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:08:27,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:08:27,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 14:08:27,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:08:27,838 WARN L193 SmtUtils]: Spent 606.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:08:27,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:08:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:08:27,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:27,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:08:27,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:08:27,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:08:27,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 14:08:27,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:08:27,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:08:27,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:08:27,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:08:27,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:08:27,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:08:27,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:08:27,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16188277] [2020-10-29 14:08:27,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:08:27,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:08:27,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431965816] [2020-10-29 14:08:27,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:08:27,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:08:27,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:08:27,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:08:27,932 INFO L87 Difference]: Start difference. First operand 39279 states and 62682 transitions. Second operand 5 states. [2020-10-29 14:08:33,149 WARN L193 SmtUtils]: Spent 620.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:08:35,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:08:35,144 INFO L93 Difference]: Finished difference Result 114881 states and 183246 transitions. [2020-10-29 14:08:35,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:08:35,145 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-29 14:08:35,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:08:35,311 INFO L225 Difference]: With dead ends: 114881 [2020-10-29 14:08:35,312 INFO L226 Difference]: Without dead ends: 76944 [2020-10-29 14:08:35,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:08:35,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76944 states. [2020-10-29 14:08:40,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76944 to 76941. [2020-10-29 14:08:40,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76941 states. [2020-10-29 14:08:40,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76941 states to 76941 states and 121958 transitions. [2020-10-29 14:08:40,372 INFO L78 Accepts]: Start accepts. Automaton has 76941 states and 121958 transitions. Word has length 133 [2020-10-29 14:08:40,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:08:40,372 INFO L481 AbstractCegarLoop]: Abstraction has 76941 states and 121958 transitions. [2020-10-29 14:08:40,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:08:40,373 INFO L276 IsEmpty]: Start isEmpty. Operand 76941 states and 121958 transitions. [2020-10-29 14:08:40,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-29 14:08:40,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:08:40,428 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] [2020-10-29 14:08:40,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 14:08:40,428 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:08:40,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:08:40,429 INFO L82 PathProgramCache]: Analyzing trace with hash 50041160, now seen corresponding path program 1 times [2020-10-29 14:08:40,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:08:40,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584578291] [2020-10-29 14:08:40,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:08:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:08:40,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:40,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:40,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:41,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:41,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:42,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:44,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:44,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:44,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:45,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:08:45,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-29 14:08:45,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:08:45,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 14:08:45,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:08:45,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:08:45,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:08:45,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 14:08:45,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 14:08:45,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:08:46,157 WARN L193 SmtUtils]: Spent 606.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:08:46,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:08:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:08:46,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:08:46,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:08:46,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:08:46,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:08:46,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 14:08:46,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:08:46,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:08:46,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:08:46,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:08:46,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:08:46,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:08:46,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:08:46,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584578291] [2020-10-29 14:08:46,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:08:46,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:08:46,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424392734] [2020-10-29 14:08:46,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:08:46,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:08:46,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:08:46,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:08:46,216 INFO L87 Difference]: Start difference. First operand 76941 states and 121958 transitions. Second operand 4 states. [2020-10-29 14:08:54,119 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification that was a NOOP. DAG size: 297 [2020-10-29 14:08:58,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:08:58,200 INFO L93 Difference]: Finished difference Result 219883 states and 348142 transitions. [2020-10-29 14:08:58,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:08:58,200 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2020-10-29 14:08:58,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:08:58,650 INFO L225 Difference]: With dead ends: 219883 [2020-10-29 14:08:58,651 INFO L226 Difference]: Without dead ends: 148904 [2020-10-29 14:08:58,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:08:58,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148904 states. [2020-10-29 14:09:07,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148904 to 148901. [2020-10-29 14:09:07,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148901 states. [2020-10-29 14:09:07,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148901 states to 148901 states and 234886 transitions. [2020-10-29 14:09:07,830 INFO L78 Accepts]: Start accepts. Automaton has 148901 states and 234886 transitions. Word has length 134 [2020-10-29 14:09:07,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:09:07,831 INFO L481 AbstractCegarLoop]: Abstraction has 148901 states and 234886 transitions. [2020-10-29 14:09:07,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:09:07,831 INFO L276 IsEmpty]: Start isEmpty. Operand 148901 states and 234886 transitions. [2020-10-29 14:09:08,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-29 14:09:08,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:09:08,338 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] [2020-10-29 14:09:08,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 14:09:08,338 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:09:08,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:09:08,339 INFO L82 PathProgramCache]: Analyzing trace with hash 175846477, now seen corresponding path program 1 times [2020-10-29 14:09:08,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:09:08,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856394197] [2020-10-29 14:09:08,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:09:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:09:08,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:08,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:08,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:08,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:08,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:09,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:10,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:10,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:10,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:11,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:13,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:09:13,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-29 14:09:13,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 14:09:13,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 14:09:13,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:09:13,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:09:13,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:09:13,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:09:13,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 14:09:13,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:09:14,139 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:09:14,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:09:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:09:14,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:14,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:09:14,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:09:14,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:09:14,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 14:09:14,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:09:14,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:09:14,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:09:14,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:09:14,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:09:14,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:09:14,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:09:14,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856394197] [2020-10-29 14:09:14,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:09:14,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:09:14,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014112431] [2020-10-29 14:09:14,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:09:14,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:09:14,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:09:14,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:09:14,257 INFO L87 Difference]: Start difference. First operand 148901 states and 234886 transitions. Second operand 5 states. [2020-10-29 14:09:22,264 WARN L193 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:09:28,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:09:28,085 INFO L93 Difference]: Finished difference Result 339721 states and 534174 transitions. [2020-10-29 14:09:28,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:09:28,085 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-29 14:09:28,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:09:28,413 INFO L225 Difference]: With dead ends: 339721 [2020-10-29 14:09:28,413 INFO L226 Difference]: Without dead ends: 191390 [2020-10-29 14:09:28,523 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 [2020-10-29 14:09:28,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191390 states. [2020-10-29 14:09:38,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191390 to 150467. [2020-10-29 14:09:38,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150467 states. [2020-10-29 14:09:38,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150467 states to 150467 states and 237136 transitions. [2020-10-29 14:09:38,687 INFO L78 Accepts]: Start accepts. Automaton has 150467 states and 237136 transitions. Word has length 134 [2020-10-29 14:09:38,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:09:38,687 INFO L481 AbstractCegarLoop]: Abstraction has 150467 states and 237136 transitions. [2020-10-29 14:09:38,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:09:38,688 INFO L276 IsEmpty]: Start isEmpty. Operand 150467 states and 237136 transitions. [2020-10-29 14:09:38,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-29 14:09:38,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:09:38,776 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] [2020-10-29 14:09:38,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 14:09:38,776 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:09:38,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:09:38,776 INFO L82 PathProgramCache]: Analyzing trace with hash -751984566, now seen corresponding path program 1 times [2020-10-29 14:09:38,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:09:38,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895341833] [2020-10-29 14:09:38,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:09:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:09:38,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:38,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:39,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:39,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:39,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:40,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:40,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:41,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:41,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:43,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:09:43,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-29 14:09:43,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:09:43,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 14:09:43,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:09:43,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:09:43,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:09:43,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:09:43,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 14:09:43,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:09:44,582 WARN L193 SmtUtils]: Spent 624.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-29 14:09:44,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:09:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:09:44,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:44,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:09:44,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:09:44,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:09:44,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 14:09:44,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:09:44,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:09:44,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:09:44,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:09:44,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:09:44,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:09:44,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:09:44,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895341833] [2020-10-29 14:09:44,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:09:44,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:09:44,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534543778] [2020-10-29 14:09:44,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:09:44,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:09:44,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:09:44,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:09:44,656 INFO L87 Difference]: Start difference. First operand 150467 states and 237136 transitions. Second operand 5 states. [2020-10-29 14:09:56,972 WARN L193 SmtUtils]: Spent 812.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-29 14:10:08,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:10:08,441 INFO L93 Difference]: Finished difference Result 439293 states and 692305 transitions. [2020-10-29 14:10:08,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:10:08,442 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-29 14:10:08,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:10:09,137 INFO L225 Difference]: With dead ends: 439293 [2020-10-29 14:10:09,137 INFO L226 Difference]: Without dead ends: 294124 [2020-10-29 14:10:09,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:10:09,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294124 states.