/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=SHALLOWEST --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_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:51:35,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:51:35,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:51:35,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:51:35,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:51:35,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:51:35,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:51:35,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:51:35,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:51:35,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:51:35,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:51:35,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:51:35,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:51:35,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:51:35,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:51:35,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:51:35,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:51:35,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:51:35,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:51:35,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:51:35,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:51:35,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:51:35,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:51:35,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:51:35,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:51:35,920 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:51:35,920 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:51:35,921 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:51:35,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:51:35,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:51:35,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:51:35,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:51:35,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:51:35,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:51:35,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:51:35,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:51:35,928 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:51:35,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:51:35,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:51:35,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:51:35,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:51:35,934 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 05:51:35,989 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:51:35,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:51:35,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:51:35,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:51:35,994 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:51:35,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:51:35,995 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:51:35,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:51:35,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:51:35,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:51:35,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:51:35,997 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:51:35,997 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:51:35,997 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:51:35,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:51:35,998 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:51:35,998 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:51:35,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:51:35,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:51:35,998 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:51:35,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:51:35,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:51:35,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:51:35,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:51:36,000 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:51:36,000 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:51:36,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:51:36,000 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:51:36,000 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:51:36,001 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:51:36,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:51:36,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:51:36,434 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:51:36,436 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:51:36,442 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:51:36,444 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-27 05:51:36,528 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8122f82bd/e1064e39246b4a2dac14e087fc130f3a/FLAG47d4c0b7e [2020-10-27 05:51:37,330 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:51:37,331 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-27 05:51:37,355 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8122f82bd/e1064e39246b4a2dac14e087fc130f3a/FLAG47d4c0b7e [2020-10-27 05:51:37,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8122f82bd/e1064e39246b4a2dac14e087fc130f3a [2020-10-27 05:51:37,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:51:37,554 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:51:37,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:51:37,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:51:37,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:51:37,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:51:37" (1/1) ... [2020-10-27 05:51:37,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c388ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:37, skipping insertion in model container [2020-10-27 05:51:37,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:51:37" (1/1) ... [2020-10-27 05:51:37,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:51:37,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:51:38,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:51:38,052 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:51:38,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:51:38,269 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:51:38,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:38 WrapperNode [2020-10-27 05:51:38,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:51:38,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:51:38,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:51:38,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:51:38,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:38" (1/1) ... [2020-10-27 05:51:38,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:38" (1/1) ... [2020-10-27 05:51:38,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:38" (1/1) ... [2020-10-27 05:51:38,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:38" (1/1) ... [2020-10-27 05:51:38,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:38" (1/1) ... [2020-10-27 05:51:38,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:38" (1/1) ... [2020-10-27 05:51:38,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:38" (1/1) ... [2020-10-27 05:51:38,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:51:38,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:51:38,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:51:38,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:51:38,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:51:38,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:51:38,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:51:38,501 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:51:38,502 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:51:38,503 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:51:38,503 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:51:38,503 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:51:38,503 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:51:38,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:51:38,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:51:38,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:51:38,505 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:51:38,505 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:51:38,505 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:51:38,505 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:51:38,506 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:51:38,506 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:51:38,506 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:51:38,506 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:51:38,507 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 05:51:38,507 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-27 05:51:38,507 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:51:38,507 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:51:38,507 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:51:38,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:51:38,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:51:38,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:51:38,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:51:38,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:51:38,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:51:39,833 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:51:39,833 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:51:39,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:51:39 BoogieIcfgContainer [2020-10-27 05:51:39,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:51:39,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:51:39,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:51:39,843 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:51:39,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:51:37" (1/3) ... [2020-10-27 05:51:39,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6971a874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:51:39, skipping insertion in model container [2020-10-27 05:51:39,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:38" (2/3) ... [2020-10-27 05:51:39,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6971a874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:51:39, skipping insertion in model container [2020-10-27 05:51:39,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:51:39" (3/3) ... [2020-10-27 05:51:39,847 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-27 05:51:39,860 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:51:39,865 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:51:39,880 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:51:39,913 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:51:39,913 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:51:39,914 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:51:39,914 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:51:39,914 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:51:39,914 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:51:39,914 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:51:39,914 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:51:39,940 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states. [2020-10-27 05:51:39,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-27 05:51:39,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:51:39,954 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] [2020-10-27 05:51:39,955 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:51:39,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:51:39,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1134591196, now seen corresponding path program 1 times [2020-10-27 05:51:39,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:51:39,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643952547] [2020-10-27 05:51:39,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:51:40,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:51:40,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:51:40,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:51:41,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:51:45,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:51:45,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 05:51:45,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:51:45,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-27 05:51:45,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:51:45,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 05:51:45,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 05:51:45,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 05:51:45,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:51:46,293 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:51:46,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:51:46,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:51:46,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:51:46,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:51:46,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:51:46,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:51:46,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 05:51:46,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:51:46,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:51:46,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:51:46,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:51:46,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:51:46,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:51:46,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643952547] [2020-10-27 05:51:46,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:51:46,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 05:51:46,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798848014] [2020-10-27 05:51:46,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 05:51:46,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:51:46,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 05:51:46,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:51:46,462 INFO L87 Difference]: Start difference. First operand 268 states. Second operand 9 states. [2020-10-27 05:51:48,691 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:51:49,104 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:51:49,523 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-27 05:51:49,982 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-27 05:51:50,429 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-10-27 05:51:50,887 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2020-10-27 05:51:51,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:51:51,744 INFO L93 Difference]: Finished difference Result 1179 states and 1939 transitions. [2020-10-27 05:51:51,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:51:51,748 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-10-27 05:51:51,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:51:51,776 INFO L225 Difference]: With dead ends: 1179 [2020-10-27 05:51:51,777 INFO L226 Difference]: Without dead ends: 987 [2020-10-27 05:51:51,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-27 05:51:51,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-10-27 05:51:51,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 972. [2020-10-27 05:51:51,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 972 states. [2020-10-27 05:51:51,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1477 transitions. [2020-10-27 05:51:51,989 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1477 transitions. Word has length 102 [2020-10-27 05:51:51,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:51:51,992 INFO L481 AbstractCegarLoop]: Abstraction has 972 states and 1477 transitions. [2020-10-27 05:51:51,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 05:51:51,993 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1477 transitions. [2020-10-27 05:51:52,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 05:51:52,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:51:52,005 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] [2020-10-27 05:51:52,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:51:52,006 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:51:52,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:51:52,007 INFO L82 PathProgramCache]: Analyzing trace with hash 942418188, now seen corresponding path program 1 times [2020-10-27 05:51:52,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:51:52,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879118152] [2020-10-27 05:51:52,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:51:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:51:52,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:51:52,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:51:52,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:51:54,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:51:54,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 05:51:54,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:51:54,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2893 [2020-10-27 05:51:54,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:51:54,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:51:54,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:51:54,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 05:51:54,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-27 05:51:55,458 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:51:55,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:51:55,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:51:55,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:51:55,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:51:55,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:51:55,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:51:55,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 05:51:55,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:51:55,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:51:55,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:51:55,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:51:55,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:51:55,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:51:55,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879118152] [2020-10-27 05:51:55,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:51:55,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:51:55,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714039197] [2020-10-27 05:51:55,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:51:55,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:51:55,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:51:55,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:51:55,580 INFO L87 Difference]: Start difference. First operand 972 states and 1477 transitions. Second operand 6 states. [2020-10-27 05:51:56,008 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:51:57,306 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-27 05:51:58,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:51:58,090 INFO L93 Difference]: Finished difference Result 2314 states and 3597 transitions. [2020-10-27 05:51:58,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:51:58,091 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-27 05:51:58,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:51:58,101 INFO L225 Difference]: With dead ends: 2314 [2020-10-27 05:51:58,101 INFO L226 Difference]: Without dead ends: 1545 [2020-10-27 05:51:58,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:51:58,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2020-10-27 05:51:58,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 1542. [2020-10-27 05:51:58,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2020-10-27 05:51:58,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2375 transitions. [2020-10-27 05:51:58,229 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2375 transitions. Word has length 103 [2020-10-27 05:51:58,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:51:58,230 INFO L481 AbstractCegarLoop]: Abstraction has 1542 states and 2375 transitions. [2020-10-27 05:51:58,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:51:58,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2375 transitions. [2020-10-27 05:51:58,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 05:51:58,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:51:58,233 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] [2020-10-27 05:51:58,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:51:58,234 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:51:58,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:51:58,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1845411843, now seen corresponding path program 1 times [2020-10-27 05:51:58,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:51:58,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055718099] [2020-10-27 05:51:58,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:51:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:51:58,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:51:58,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:51:58,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:00,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:52:00,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 05:52:00,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:52:00,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2703 [2020-10-27 05:52:00,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:52:00,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:52:00,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:52:00,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 05:52:00,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:52:01,528 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:52:01,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:52:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:52:01,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:01,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:52:01,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:52:01,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:52:01,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 05:52:01,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:52:01,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:52:01,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:52:01,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:52:01,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:52:01,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:52:01,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055718099] [2020-10-27 05:52:01,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:52:01,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:52:01,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385600716] [2020-10-27 05:52:01,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:52:01,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:52:01,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:52:01,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:52:01,629 INFO L87 Difference]: Start difference. First operand 1542 states and 2375 transitions. Second operand 6 states. [2020-10-27 05:52:02,128 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:52:03,401 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-27 05:52:04,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:52:04,148 INFO L93 Difference]: Finished difference Result 4057 states and 6332 transitions. [2020-10-27 05:52:04,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:52:04,149 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-27 05:52:04,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:52:04,163 INFO L225 Difference]: With dead ends: 4057 [2020-10-27 05:52:04,163 INFO L226 Difference]: Without dead ends: 2677 [2020-10-27 05:52:04,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:52:04,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2677 states. [2020-10-27 05:52:04,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2677 to 2674. [2020-10-27 05:52:04,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2674 states. [2020-10-27 05:52:04,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4147 transitions. [2020-10-27 05:52:04,368 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4147 transitions. Word has length 103 [2020-10-27 05:52:04,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:52:04,369 INFO L481 AbstractCegarLoop]: Abstraction has 2674 states and 4147 transitions. [2020-10-27 05:52:04,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:52:04,369 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4147 transitions. [2020-10-27 05:52:04,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 05:52:04,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:52:04,374 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] [2020-10-27 05:52:04,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:52:04,374 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:52:04,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:52:04,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1593472274, now seen corresponding path program 1 times [2020-10-27 05:52:04,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:52:04,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692580965] [2020-10-27 05:52:04,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:52:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:52:04,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:04,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:04,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:07,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:52:07,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 05:52:07,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:52:07,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2610 [2020-10-27 05:52:07,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:52:07,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:52:07,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:52:07,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 05:52:07,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:52:07,484 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:52:07,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:52:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:52:07,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:07,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:52:07,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:52:07,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:52:07,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 05:52:07,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:52:07,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:52:07,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:52:07,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:52:07,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:52:07,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:52:07,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692580965] [2020-10-27 05:52:07,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:52:07,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:52:07,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419685095] [2020-10-27 05:52:07,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:52:07,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:52:07,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:52:07,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:52:07,578 INFO L87 Difference]: Start difference. First operand 2674 states and 4147 transitions. Second operand 6 states. [2020-10-27 05:52:08,006 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:52:09,383 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-27 05:52:10,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:52:10,268 INFO L93 Difference]: Finished difference Result 7526 states and 11771 transitions. [2020-10-27 05:52:10,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:52:10,269 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-27 05:52:10,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:52:10,297 INFO L225 Difference]: With dead ends: 7526 [2020-10-27 05:52:10,297 INFO L226 Difference]: Without dead ends: 4977 [2020-10-27 05:52:10,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:52:10,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4977 states. [2020-10-27 05:52:10,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4977 to 4974. [2020-10-27 05:52:10,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4974 states. [2020-10-27 05:52:10,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4974 states to 4974 states and 7744 transitions. [2020-10-27 05:52:10,678 INFO L78 Accepts]: Start accepts. Automaton has 4974 states and 7744 transitions. Word has length 103 [2020-10-27 05:52:10,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:52:10,678 INFO L481 AbstractCegarLoop]: Abstraction has 4974 states and 7744 transitions. [2020-10-27 05:52:10,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:52:10,678 INFO L276 IsEmpty]: Start isEmpty. Operand 4974 states and 7744 transitions. [2020-10-27 05:52:10,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 05:52:10,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:52:10,682 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] [2020-10-27 05:52:10,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:52:10,683 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:52:10,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:52:10,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1872705057, now seen corresponding path program 1 times [2020-10-27 05:52:10,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:52:10,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192387353] [2020-10-27 05:52:10,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:52:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:52:10,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:10,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:11,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:13,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:52:13,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 05:52:13,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:52:13,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2286 [2020-10-27 05:52:13,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:52:13,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:52:13,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:52:13,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 05:52:13,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:52:13,613 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:52:13,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:52:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:52:13,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:13,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:52:13,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:52:13,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:52:13,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 05:52:13,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:52:13,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:52:13,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:52:13,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:52:13,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:52:13,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:52:13,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192387353] [2020-10-27 05:52:13,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:52:13,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:52:13,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57550543] [2020-10-27 05:52:13,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:52:13,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:52:13,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:52:13,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:52:13,737 INFO L87 Difference]: Start difference. First operand 4974 states and 7744 transitions. Second operand 6 states. [2020-10-27 05:52:14,227 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-27 05:52:15,488 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:52:16,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:52:16,407 INFO L93 Difference]: Finished difference Result 14420 states and 22522 transitions. [2020-10-27 05:52:16,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:52:16,412 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-27 05:52:16,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:52:16,462 INFO L225 Difference]: With dead ends: 14420 [2020-10-27 05:52:16,462 INFO L226 Difference]: Without dead ends: 9541 [2020-10-27 05:52:16,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:52:16,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9541 states. [2020-10-27 05:52:17,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9541 to 9538. [2020-10-27 05:52:17,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9538 states. [2020-10-27 05:52:17,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9538 states to 9538 states and 14816 transitions. [2020-10-27 05:52:17,202 INFO L78 Accepts]: Start accepts. Automaton has 9538 states and 14816 transitions. Word has length 103 [2020-10-27 05:52:17,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:52:17,202 INFO L481 AbstractCegarLoop]: Abstraction has 9538 states and 14816 transitions. [2020-10-27 05:52:17,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:52:17,202 INFO L276 IsEmpty]: Start isEmpty. Operand 9538 states and 14816 transitions. [2020-10-27 05:52:17,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 05:52:17,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:52:17,207 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] [2020-10-27 05:52:17,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:52:17,208 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:52:17,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:52:17,209 INFO L82 PathProgramCache]: Analyzing trace with hash -361055024, now seen corresponding path program 1 times [2020-10-27 05:52:17,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:52:17,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017380830] [2020-10-27 05:52:17,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:52:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:52:17,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:17,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:17,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:19,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:52:19,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 05:52:19,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:52:19,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2017 [2020-10-27 05:52:19,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:52:19,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:52:19,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:52:19,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 05:52:19,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:52:19,791 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:52:19,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:52:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:52:19,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:19,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:52:19,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:52:19,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:52:19,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 05:52:19,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:52:19,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:52:19,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:52:19,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:52:19,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:52:19,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:52:19,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017380830] [2020-10-27 05:52:19,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:52:19,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:52:19,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41273441] [2020-10-27 05:52:19,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:52:19,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:52:19,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:52:19,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:52:19,893 INFO L87 Difference]: Start difference. First operand 9538 states and 14816 transitions. Second operand 6 states. [2020-10-27 05:52:20,386 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:52:21,723 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-27 05:52:23,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:52:23,058 INFO L93 Difference]: Finished difference Result 28079 states and 43651 transitions. [2020-10-27 05:52:23,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:52:23,058 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-27 05:52:23,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:52:23,129 INFO L225 Difference]: With dead ends: 28079 [2020-10-27 05:52:23,130 INFO L226 Difference]: Without dead ends: 18613 [2020-10-27 05:52:23,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:52:23,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18613 states. [2020-10-27 05:52:24,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18613 to 18610. [2020-10-27 05:52:24,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18610 states. [2020-10-27 05:52:24,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18610 states to 18610 states and 28753 transitions. [2020-10-27 05:52:24,587 INFO L78 Accepts]: Start accepts. Automaton has 18610 states and 28753 transitions. Word has length 103 [2020-10-27 05:52:24,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:52:24,588 INFO L481 AbstractCegarLoop]: Abstraction has 18610 states and 28753 transitions. [2020-10-27 05:52:24,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:52:24,588 INFO L276 IsEmpty]: Start isEmpty. Operand 18610 states and 28753 transitions. [2020-10-27 05:52:24,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 05:52:24,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:52:24,595 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] [2020-10-27 05:52:24,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:52:24,595 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:52:24,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:52:24,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1761289153, now seen corresponding path program 1 times [2020-10-27 05:52:24,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:52:24,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300235347] [2020-10-27 05:52:24,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:52:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:52:24,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:24,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:24,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:26,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:52:26,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 05:52:26,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:52:26,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2072 [2020-10-27 05:52:26,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:52:26,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:52:26,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:52:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 05:52:26,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:52:27,174 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:52:27,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:52:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:52:27,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:27,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:52:27,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:52:27,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:52:27,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 05:52:27,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:52:27,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:52:27,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:52:27,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:52:27,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:52:27,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:52:27,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300235347] [2020-10-27 05:52:27,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:52:27,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:52:27,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237774373] [2020-10-27 05:52:27,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:52:27,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:52:27,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:52:27,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:52:27,274 INFO L87 Difference]: Start difference. First operand 18610 states and 28753 transitions. Second operand 6 states. [2020-10-27 05:52:27,734 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:52:29,104 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-27 05:52:31,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:52:31,091 INFO L93 Difference]: Finished difference Result 55153 states and 85160 transitions. [2020-10-27 05:52:31,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:52:31,091 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-27 05:52:31,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:52:31,188 INFO L225 Difference]: With dead ends: 55153 [2020-10-27 05:52:31,188 INFO L226 Difference]: Without dead ends: 36599 [2020-10-27 05:52:31,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:52:31,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36599 states. [2020-10-27 05:52:33,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36599 to 36596. [2020-10-27 05:52:33,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36596 states. [2020-10-27 05:52:33,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36596 states to 36596 states and 56111 transitions. [2020-10-27 05:52:33,347 INFO L78 Accepts]: Start accepts. Automaton has 36596 states and 56111 transitions. Word has length 103 [2020-10-27 05:52:33,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:52:33,347 INFO L481 AbstractCegarLoop]: Abstraction has 36596 states and 56111 transitions. [2020-10-27 05:52:33,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:52:33,348 INFO L276 IsEmpty]: Start isEmpty. Operand 36596 states and 56111 transitions. [2020-10-27 05:52:33,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 05:52:33,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:52:33,359 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] [2020-10-27 05:52:33,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:52:33,360 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:52:33,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:52:33,360 INFO L82 PathProgramCache]: Analyzing trace with hash -850350895, now seen corresponding path program 1 times [2020-10-27 05:52:33,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:52:33,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742503404] [2020-10-27 05:52:33,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:52:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:52:33,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:33,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:33,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:33,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:38,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:52:38,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 05:52:38,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:52:38,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 05:52:38,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:52:38,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:52:38,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:52:38,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 05:52:38,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:52:39,039 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:52:39,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:52:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:52:39,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:39,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:52:39,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:52:39,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:52:39,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 05:52:39,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:52:39,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:52:39,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:52:39,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:52:39,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:52:39,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:52:39,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742503404] [2020-10-27 05:52:39,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:52:39,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:52:39,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72665641] [2020-10-27 05:52:39,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:52:39,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:52:39,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:52:39,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:52:39,144 INFO L87 Difference]: Start difference. First operand 36596 states and 56111 transitions. Second operand 11 states. [2020-10-27 05:52:39,639 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-27 05:52:42,470 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:52:43,014 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-27 05:52:49,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:52:49,438 INFO L93 Difference]: Finished difference Result 90680 states and 138191 transitions. [2020-10-27 05:52:49,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 05:52:49,439 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-10-27 05:52:49,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:52:49,669 INFO L225 Difference]: With dead ends: 90680 [2020-10-27 05:52:49,670 INFO L226 Difference]: Without dead ends: 87179 [2020-10-27 05:52:49,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=227, Invalid=703, Unknown=0, NotChecked=0, Total=930 [2020-10-27 05:52:49,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87179 states. [2020-10-27 05:52:53,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87179 to 36596. [2020-10-27 05:52:53,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36596 states. [2020-10-27 05:52:53,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36596 states to 36596 states and 56110 transitions. [2020-10-27 05:52:53,237 INFO L78 Accepts]: Start accepts. Automaton has 36596 states and 56110 transitions. Word has length 104 [2020-10-27 05:52:53,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:52:53,238 INFO L481 AbstractCegarLoop]: Abstraction has 36596 states and 56110 transitions. [2020-10-27 05:52:53,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:52:53,238 INFO L276 IsEmpty]: Start isEmpty. Operand 36596 states and 56110 transitions. [2020-10-27 05:52:53,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 05:52:53,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:52:53,252 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] [2020-10-27 05:52:53,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:52:53,253 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:52:53,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:52:53,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1242331023, now seen corresponding path program 1 times [2020-10-27 05:52:53,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:52:53,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538684872] [2020-10-27 05:52:53,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:52:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:52:53,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:53,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:54,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:54,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:56,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:52:56,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 05:52:56,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:52:56,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3328 [2020-10-27 05:52:56,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:52:56,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:52:56,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:52:56,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 05:52:56,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:52:57,163 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:52:57,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:52:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:52:57,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:52:57,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:52:57,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:52:57,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:52:57,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 05:52:57,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:52:57,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:52:57,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:52:57,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:52:57,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:52:57,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:52:57,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538684872] [2020-10-27 05:52:57,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:52:57,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:52:57,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903975072] [2020-10-27 05:52:57,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:52:57,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:52:57,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:52:57,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:52:57,249 INFO L87 Difference]: Start difference. First operand 36596 states and 56110 transitions. Second operand 11 states. [2020-10-27 05:52:57,765 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-27 05:53:00,034 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:53:00,527 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-27 05:53:08,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:53:08,100 INFO L93 Difference]: Finished difference Result 95103 states and 145474 transitions. [2020-10-27 05:53:08,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 05:53:08,100 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-10-27 05:53:08,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:53:08,275 INFO L225 Difference]: With dead ends: 95103 [2020-10-27 05:53:08,275 INFO L226 Difference]: Without dead ends: 81884 [2020-10-27 05:53:08,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2020-10-27 05:53:08,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81884 states. [2020-10-27 05:53:11,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81884 to 37109. [2020-10-27 05:53:11,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37109 states. [2020-10-27 05:53:11,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37109 states to 37109 states and 56858 transitions. [2020-10-27 05:53:11,778 INFO L78 Accepts]: Start accepts. Automaton has 37109 states and 56858 transitions. Word has length 104 [2020-10-27 05:53:11,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:53:11,778 INFO L481 AbstractCegarLoop]: Abstraction has 37109 states and 56858 transitions. [2020-10-27 05:53:11,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:53:11,778 INFO L276 IsEmpty]: Start isEmpty. Operand 37109 states and 56858 transitions. [2020-10-27 05:53:11,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 05:53:11,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:53:11,790 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] [2020-10-27 05:53:11,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:53:11,790 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:53:11,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:53:11,791 INFO L82 PathProgramCache]: Analyzing trace with hash 557982737, now seen corresponding path program 1 times [2020-10-27 05:53:11,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:53:11,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687764624] [2020-10-27 05:53:11,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:53:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:53:11,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:53:11,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:53:12,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:53:12,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:53:16,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:53:16,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 05:53:16,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:53:16,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4584 [2020-10-27 05:53:16,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:53:16,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:53:16,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:53:16,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 05:53:16,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:53:16,965 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:53:16,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:53:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:53:16,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:53:16,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:53:16,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:53:16,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:53:16,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 05:53:16,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:53:16,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:53:16,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:53:16,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:53:16,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:53:17,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:53:17,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687764624] [2020-10-27 05:53:17,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:53:17,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:53:17,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117900689] [2020-10-27 05:53:17,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:53:17,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:53:17,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:53:17,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:53:17,032 INFO L87 Difference]: Start difference. First operand 37109 states and 56858 transitions. Second operand 11 states. [2020-10-27 05:53:17,522 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-27 05:53:20,670 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:53:21,230 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-27 05:53:32,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:53:32,094 INFO L93 Difference]: Finished difference Result 138357 states and 210492 transitions. [2020-10-27 05:53:32,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 05:53:32,095 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-10-27 05:53:32,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:53:32,350 INFO L225 Difference]: With dead ends: 138357 [2020-10-27 05:53:32,350 INFO L226 Difference]: Without dead ends: 121954 [2020-10-27 05:53:32,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2020-10-27 05:53:32,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121954 states. [2020-10-27 05:53:36,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121954 to 37619. [2020-10-27 05:53:36,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37619 states. [2020-10-27 05:53:36,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37619 states to 37619 states and 57568 transitions. [2020-10-27 05:53:36,853 INFO L78 Accepts]: Start accepts. Automaton has 37619 states and 57568 transitions. Word has length 104 [2020-10-27 05:53:36,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:53:36,853 INFO L481 AbstractCegarLoop]: Abstraction has 37619 states and 57568 transitions. [2020-10-27 05:53:36,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:53:36,854 INFO L276 IsEmpty]: Start isEmpty. Operand 37619 states and 57568 transitions. [2020-10-27 05:53:36,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 05:53:36,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:53:36,868 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] [2020-10-27 05:53:36,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:53:36,869 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:53:36,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:53:36,871 INFO L82 PathProgramCache]: Analyzing trace with hash 261390257, now seen corresponding path program 1 times [2020-10-27 05:53:36,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:53:36,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186677486] [2020-10-27 05:53:36,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:53:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:53:36,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:53:36,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:53:37,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:53:37,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:53:40,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:53:40,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 05:53:40,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:53:40,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3837 [2020-10-27 05:53:40,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:53:40,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:53:40,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:53:40,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 05:53:40,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:53:41,282 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:53:41,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:53:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:53:41,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:53:41,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:53:41,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:53:41,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:53:41,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 05:53:41,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:53:41,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:53:41,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:53:41,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:53:41,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:53:41,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:53:41,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186677486] [2020-10-27 05:53:41,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:53:41,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:53:41,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039703784] [2020-10-27 05:53:41,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:53:41,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:53:41,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:53:41,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:53:41,367 INFO L87 Difference]: Start difference. First operand 37619 states and 57568 transitions. Second operand 11 states. [2020-10-27 05:53:41,864 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-27 05:53:45,394 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:53:45,925 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-27 05:54:01,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:54:01,076 INFO L93 Difference]: Finished difference Result 175278 states and 267681 transitions. [2020-10-27 05:54:01,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 05:54:01,077 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-10-27 05:54:01,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:54:01,528 INFO L225 Difference]: With dead ends: 175278 [2020-10-27 05:54:01,528 INFO L226 Difference]: Without dead ends: 149819 [2020-10-27 05:54:01,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2020-10-27 05:54:01,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149819 states. [2020-10-27 05:54:06,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149819 to 38204. [2020-10-27 05:54:06,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38204 states. [2020-10-27 05:54:06,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38204 states to 38204 states and 58363 transitions. [2020-10-27 05:54:06,717 INFO L78 Accepts]: Start accepts. Automaton has 38204 states and 58363 transitions. Word has length 104 [2020-10-27 05:54:06,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:54:06,718 INFO L481 AbstractCegarLoop]: Abstraction has 38204 states and 58363 transitions. [2020-10-27 05:54:06,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:54:06,718 INFO L276 IsEmpty]: Start isEmpty. Operand 38204 states and 58363 transitions. [2020-10-27 05:54:06,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 05:54:06,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:54:06,731 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] [2020-10-27 05:54:06,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 05:54:06,731 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:54:06,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:54:06,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1186817199, now seen corresponding path program 1 times [2020-10-27 05:54:06,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:54:06,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134218604] [2020-10-27 05:54:06,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:54:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:54:06,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:06,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:06,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:07,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:10,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:54:10,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 05:54:10,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:54:10,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3437 [2020-10-27 05:54:10,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:54:10,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:54:10,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:54:10,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 05:54:10,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:54:10,718 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:54:10,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:54:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:54:10,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:10,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:54:10,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:54:10,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:54:10,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 05:54:10,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:54:10,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:54:10,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:54:10,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:54:10,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:54:10,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:54:10,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134218604] [2020-10-27 05:54:10,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:54:10,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:54:10,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356438193] [2020-10-27 05:54:10,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:54:10,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:54:10,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:54:10,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:54:10,780 INFO L87 Difference]: Start difference. First operand 38204 states and 58363 transitions. Second operand 11 states. [2020-10-27 05:54:11,256 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-27 05:54:14,648 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-27 05:54:15,187 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-27 05:54:28,260 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:54:35,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:54:35,269 INFO L93 Difference]: Finished difference Result 199289 states and 306166 transitions. [2020-10-27 05:54:35,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 05:54:35,269 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-10-27 05:54:35,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:54:35,597 INFO L225 Difference]: With dead ends: 199289 [2020-10-27 05:54:35,597 INFO L226 Difference]: Without dead ends: 168156 [2020-10-27 05:54:35,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2020-10-27 05:54:35,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168156 states. [2020-10-27 05:54:41,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168156 to 38859. [2020-10-27 05:54:41,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38859 states. [2020-10-27 05:54:41,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38859 states to 38859 states and 59217 transitions. [2020-10-27 05:54:41,264 INFO L78 Accepts]: Start accepts. Automaton has 38859 states and 59217 transitions. Word has length 104 [2020-10-27 05:54:41,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:54:41,265 INFO L481 AbstractCegarLoop]: Abstraction has 38859 states and 59217 transitions. [2020-10-27 05:54:41,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:54:41,265 INFO L276 IsEmpty]: Start isEmpty. Operand 38859 states and 59217 transitions. [2020-10-27 05:54:41,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 05:54:41,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:54:41,276 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] [2020-10-27 05:54:41,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 05:54:41,276 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:54:41,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:54:41,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1901824271, now seen corresponding path program 1 times [2020-10-27 05:54:41,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:54:41,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662873403] [2020-10-27 05:54:41,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:54:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:54:41,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:41,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:41,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:41,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:45,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:54:45,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 05:54:45,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:54:45,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4288 [2020-10-27 05:54:45,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:54:45,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:54:45,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:54:45,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 05:54:45,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:54:46,204 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 05:54:46,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:54:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:54:46,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:54:46,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:54:46,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:54:46,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:54:46,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 05:54:46,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:54:46,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:54:46,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:54:46,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:54:46,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:54:46,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:54:46,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662873403] [2020-10-27 05:54:46,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:54:46,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:54:46,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383750810] [2020-10-27 05:54:46,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:54:46,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:54:46,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:54:46,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:54:46,285 INFO L87 Difference]: Start difference. First operand 38859 states and 59217 transitions. Second operand 11 states. [2020-10-27 05:54:46,822 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:54:51,089 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-27 05:54:51,533 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-27 05:55:14,789 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 211