/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:54:55,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:54:55,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:54:55,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:54:55,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:54:55,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:54:55,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:54:55,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:54:55,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:54:55,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:54:55,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:54:55,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:54:55,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:54:55,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:54:55,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:54:55,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:54:55,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:54:55,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:54:55,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:54:55,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:54:55,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:54:55,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:54:55,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:54:55,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:54:56,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:54:56,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:54:56,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:54:56,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:54:56,011 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:54:56,013 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:54:56,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:54:56,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:54:56,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:54:56,019 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:54:56,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:54:56,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:54:56,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:54:56,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:54:56,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:54:56,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:54:56,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:54:56,048 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 23:54:56,110 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:54:56,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:54:56,115 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:54:56,115 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:54:56,115 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:54:56,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:54:56,116 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:54:56,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:54:56,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:54:56,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:54:56,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:54:56,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:54:56,119 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:54:56,119 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:54:56,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:54:56,119 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:54:56,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:54:56,120 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:54:56,120 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:54:56,121 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:54:56,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:54:56,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:54:56,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:54:56,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:54:56,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:54:56,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:54:56,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:54:56,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:54:56,123 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:54:56,123 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:54:56,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:54:56,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:54:56,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:54:56,626 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:54:56,627 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:54:56,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 23:54:56,726 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74f78ce4e/b7233388ba624be49efcf1a62c810365/FLAG33085c802 [2020-10-27 23:54:57,401 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:54:57,402 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 23:54:57,429 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74f78ce4e/b7233388ba624be49efcf1a62c810365/FLAG33085c802 [2020-10-27 23:54:57,664 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74f78ce4e/b7233388ba624be49efcf1a62c810365 [2020-10-27 23:54:57,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:54:57,676 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:54:57,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:54:57,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:54:57,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:54:57,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:54:57" (1/1) ... [2020-10-27 23:54:57,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b3f0c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:54:57, skipping insertion in model container [2020-10-27 23:54:57,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:54:57" (1/1) ... [2020-10-27 23:54:57,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:54:57,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:54:58,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:54:58,220 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:54:58,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:54:58,411 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:54:58,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:54:58 WrapperNode [2020-10-27 23:54:58,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:54:58,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:54:58,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:54:58,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:54:58,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:54:58" (1/1) ... [2020-10-27 23:54:58,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:54:58" (1/1) ... [2020-10-27 23:54:58,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:54:58" (1/1) ... [2020-10-27 23:54:58,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:54:58" (1/1) ... [2020-10-27 23:54:58,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:54:58" (1/1) ... [2020-10-27 23:54:58,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:54:58" (1/1) ... [2020-10-27 23:54:58,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:54:58" (1/1) ... [2020-10-27 23:54:58,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:54:58,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:54:58,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:54:58,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:54:58,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:54:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:54:58,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:54:58,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:54:58,582 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:54:58,582 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:54:58,583 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:54:58,583 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:54:58,583 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:54:58,583 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:54:58,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:54:58,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:54:58,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:54:58,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 23:54:58,584 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:54:58,584 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:54:58,584 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:54:58,585 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:54:58,585 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:54:58,585 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:54:58,585 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:54:58,585 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:54:58,586 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 23:54:58,586 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-27 23:54:58,586 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:54:58,586 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:54:58,586 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:54:58,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:54:58,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:54:58,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:54:58,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:54:58,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:54:58,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:54:59,698 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:54:59,698 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:54:59,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:54:59 BoogieIcfgContainer [2020-10-27 23:54:59,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:54:59,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:54:59,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:54:59,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:54:59,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:54:57" (1/3) ... [2020-10-27 23:54:59,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62514598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:54:59, skipping insertion in model container [2020-10-27 23:54:59,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:54:58" (2/3) ... [2020-10-27 23:54:59,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62514598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:54:59, skipping insertion in model container [2020-10-27 23:54:59,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:54:59" (3/3) ... [2020-10-27 23:54:59,711 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 23:54:59,723 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:54:59,729 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:54:59,743 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:54:59,770 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:54:59,770 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:54:59,770 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:54:59,770 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:54:59,770 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:54:59,771 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:54:59,771 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:54:59,771 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:54:59,794 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-10-27 23:54:59,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 23:54:59,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:54:59,807 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] [2020-10-27 23:54:59,807 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:54:59,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:54:59,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1904996340, now seen corresponding path program 1 times [2020-10-27 23:54:59,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:54:59,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438796561] [2020-10-27 23:54:59,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:55:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:55:00,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:00,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:00,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:00,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:00,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:00,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:01,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:01,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:01,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:02,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:02,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:02,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:03,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:03,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:04,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:04,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:04,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:04,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:05,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:55:05,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 23:55:05,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-27 23:55:05,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 23:55:05,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:55:05,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:55:05,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-27 23:55:05,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 23:55:05,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:55:05,687 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:55:05,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:55:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:55:05,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:05,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:55:05,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:55:05,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:55:05,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 23:55:05,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:55:05,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:55:05,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:55:05,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:55:05,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:55:05,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:55:05,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438796561] [2020-10-27 23:55:05,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:55:05,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:55:05,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317030308] [2020-10-27 23:55:05,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:55:05,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:55:05,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:55:05,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:55:05,840 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 4 states. [2020-10-27 23:55:06,184 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:55:07,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:55:07,442 INFO L93 Difference]: Finished difference Result 364 states and 601 transitions. [2020-10-27 23:55:07,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:55:07,444 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2020-10-27 23:55:07,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:55:07,457 INFO L225 Difference]: With dead ends: 364 [2020-10-27 23:55:07,458 INFO L226 Difference]: Without dead ends: 277 [2020-10-27 23:55:07,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:55:07,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-10-27 23:55:07,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 274. [2020-10-27 23:55:07,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-27 23:55:07,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 396 transitions. [2020-10-27 23:55:07,534 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 396 transitions. Word has length 95 [2020-10-27 23:55:07,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:55:07,535 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 396 transitions. [2020-10-27 23:55:07,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:55:07,536 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 396 transitions. [2020-10-27 23:55:07,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 23:55:07,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:55:07,540 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] [2020-10-27 23:55:07,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:55:07,541 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:55:07,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:55:07,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1490450090, now seen corresponding path program 1 times [2020-10-27 23:55:07,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:55:07,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690710186] [2020-10-27 23:55:07,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:55:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:55:07,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:07,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:07,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:07,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:07,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:08,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:08,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:08,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:08,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:09,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:09,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:09,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:10,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:10,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:10,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:10,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:11,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:12,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:55:12,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 23:55:12,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 23:55:12,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 23:55:12,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:55:12,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:55:12,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 23:55:12,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 23:55:12,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:55:12,977 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:55:12,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:55:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:55:12,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:13,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:55:13,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:55:13,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:55:13,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:55:13,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:55:13,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:55:13,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:55:13,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:55:13,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:55:13,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:55:13,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690710186] [2020-10-27 23:55:13,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:55:13,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:55:13,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133190244] [2020-10-27 23:55:13,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:55:13,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:55:13,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:55:13,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:55:13,047 INFO L87 Difference]: Start difference. First operand 274 states and 396 transitions. Second operand 7 states. [2020-10-27 23:55:13,399 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:55:14,206 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:55:14,473 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:55:14,760 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:55:15,030 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:55:15,817 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:55:16,058 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:55:16,485 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:55:16,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:55:16,564 INFO L93 Difference]: Finished difference Result 1551 states and 2410 transitions. [2020-10-27 23:55:16,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:55:16,565 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-27 23:55:16,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:55:16,574 INFO L225 Difference]: With dead ends: 1551 [2020-10-27 23:55:16,574 INFO L226 Difference]: Without dead ends: 1347 [2020-10-27 23:55:16,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:55:16,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2020-10-27 23:55:16,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 624. [2020-10-27 23:55:16,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 624 states. [2020-10-27 23:55:16,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 947 transitions. [2020-10-27 23:55:16,658 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 947 transitions. Word has length 97 [2020-10-27 23:55:16,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:55:16,658 INFO L481 AbstractCegarLoop]: Abstraction has 624 states and 947 transitions. [2020-10-27 23:55:16,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:55:16,659 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 947 transitions. [2020-10-27 23:55:16,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 23:55:16,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:55:16,663 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] [2020-10-27 23:55:16,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:55:16,664 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:55:16,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:55:16,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1090930890, now seen corresponding path program 1 times [2020-10-27 23:55:16,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:55:16,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232575989] [2020-10-27 23:55:16,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:55:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:55:16,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:16,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:16,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:16,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:16,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:17,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:17,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:17,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:17,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:17,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:17,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:19,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:21,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:55:21,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 23:55:21,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:55:21,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 23:55:21,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:55:21,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:55:21,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 23:55:21,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 23:55:21,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:55:22,014 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:55:22,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:55:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:55:22,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:22,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:55:22,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:55:22,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:55:22,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:55:22,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:55:22,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:55:22,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:55:22,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:55:22,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:55:22,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:55:22,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232575989] [2020-10-27 23:55:22,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:55:22,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:55:22,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562294220] [2020-10-27 23:55:22,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:55:22,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:55:22,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:55:22,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:55:22,067 INFO L87 Difference]: Start difference. First operand 624 states and 947 transitions. Second operand 7 states. [2020-10-27 23:55:22,309 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:55:23,193 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:55:23,427 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:55:23,671 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:55:23,925 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:55:24,843 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:55:25,047 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:55:25,431 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:55:25,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:55:25,499 INFO L93 Difference]: Finished difference Result 3332 states and 5226 transitions. [2020-10-27 23:55:25,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:55:25,499 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-10-27 23:55:25,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:55:25,516 INFO L225 Difference]: With dead ends: 3332 [2020-10-27 23:55:25,516 INFO L226 Difference]: Without dead ends: 2986 [2020-10-27 23:55:25,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:55:25,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2020-10-27 23:55:25,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 1119. [2020-10-27 23:55:25,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1119 states. [2020-10-27 23:55:25,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1721 transitions. [2020-10-27 23:55:25,609 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1721 transitions. Word has length 98 [2020-10-27 23:55:25,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:55:25,610 INFO L481 AbstractCegarLoop]: Abstraction has 1119 states and 1721 transitions. [2020-10-27 23:55:25,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:55:25,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1721 transitions. [2020-10-27 23:55:25,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 23:55:25,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:55:25,615 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] [2020-10-27 23:55:25,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:55:25,616 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:55:25,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:55:25,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1578467385, now seen corresponding path program 1 times [2020-10-27 23:55:25,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:55:25,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910232349] [2020-10-27 23:55:25,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:55:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:55:25,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:25,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:25,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:25,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:25,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:25,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:26,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:26,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:26,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:26,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:26,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:28,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:30,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:55:30,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 23:55:30,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:55:30,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 23:55:30,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:55:30,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:55:30,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 23:55:30,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 23:55:30,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:55:30,918 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:55:30,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:55:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:55:30,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:30,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:55:30,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:55:30,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:55:30,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:55:30,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:55:30,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:55:30,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:55:30,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:55:30,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:55:30,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:55:30,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910232349] [2020-10-27 23:55:30,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:55:30,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:55:30,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479319703] [2020-10-27 23:55:30,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:55:30,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:55:30,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:55:30,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:55:30,974 INFO L87 Difference]: Start difference. First operand 1119 states and 1721 transitions. Second operand 7 states. [2020-10-27 23:55:31,232 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:55:32,058 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:55:32,338 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:55:32,588 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:55:32,846 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:55:33,684 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:55:33,922 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:55:34,411 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:55:34,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:55:34,497 INFO L93 Difference]: Finished difference Result 4396 states and 6906 transitions. [2020-10-27 23:55:34,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:55:34,498 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-10-27 23:55:34,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:55:34,523 INFO L225 Difference]: With dead ends: 4396 [2020-10-27 23:55:34,523 INFO L226 Difference]: Without dead ends: 3774 [2020-10-27 23:55:34,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:55:34,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3774 states. [2020-10-27 23:55:34,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3774 to 1427. [2020-10-27 23:55:34,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1427 states. [2020-10-27 23:55:34,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 2207 transitions. [2020-10-27 23:55:34,654 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 2207 transitions. Word has length 98 [2020-10-27 23:55:34,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:55:34,654 INFO L481 AbstractCegarLoop]: Abstraction has 1427 states and 2207 transitions. [2020-10-27 23:55:34,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:55:34,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 2207 transitions. [2020-10-27 23:55:34,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 23:55:34,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:55:34,657 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] [2020-10-27 23:55:34,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:55:34,658 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:55:34,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:55:34,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1738092103, now seen corresponding path program 1 times [2020-10-27 23:55:34,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:55:34,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390913400] [2020-10-27 23:55:34,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:55:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:55:34,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:34,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:34,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:34,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:34,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:35,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:35,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:35,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:39,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:55:39,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 23:55:39,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:55:39,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 23:55:39,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:55:39,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:55:39,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 23:55:39,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 23:55:39,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:55:40,056 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:55:40,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:55:40,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:55:40,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:40,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:55:40,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:55:40,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:55:40,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:55:40,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:55:40,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:55:40,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:55:40,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:55:40,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:55:40,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:55:40,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390913400] [2020-10-27 23:55:40,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:55:40,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:55:40,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497183692] [2020-10-27 23:55:40,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:55:40,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:55:40,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:55:40,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:55:40,120 INFO L87 Difference]: Start difference. First operand 1427 states and 2207 transitions. Second operand 7 states. [2020-10-27 23:55:40,397 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:55:41,220 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:55:41,454 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:55:41,706 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:55:41,928 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:55:43,008 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:55:43,238 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:55:43,673 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:55:43,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:55:43,729 INFO L93 Difference]: Finished difference Result 7281 states and 11440 transitions. [2020-10-27 23:55:43,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:55:43,734 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-10-27 23:55:43,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:55:43,772 INFO L225 Difference]: With dead ends: 7281 [2020-10-27 23:55:43,772 INFO L226 Difference]: Without dead ends: 6647 [2020-10-27 23:55:43,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:55:43,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6647 states. [2020-10-27 23:55:44,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6647 to 2072. [2020-10-27 23:55:44,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2072 states. [2020-10-27 23:55:44,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 3205 transitions. [2020-10-27 23:55:44,028 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 3205 transitions. Word has length 99 [2020-10-27 23:55:44,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:55:44,028 INFO L481 AbstractCegarLoop]: Abstraction has 2072 states and 3205 transitions. [2020-10-27 23:55:44,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:55:44,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 3205 transitions. [2020-10-27 23:55:44,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 23:55:44,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:55:44,032 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] [2020-10-27 23:55:44,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:55:44,033 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:55:44,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:55:44,034 INFO L82 PathProgramCache]: Analyzing trace with hash -761791926, now seen corresponding path program 1 times [2020-10-27 23:55:44,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:55:44,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317971217] [2020-10-27 23:55:44,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:55:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:55:44,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:44,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:44,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:44,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:44,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:44,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:44,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:44,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:49,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:49,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:55:49,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 23:55:49,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:55:49,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 23:55:49,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:55:49,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:55:49,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 23:55:49,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 23:55:49,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:55:49,358 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:55:49,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:55:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:55:49,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:49,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:55:49,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:55:49,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:55:49,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:55:49,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:55:49,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:55:49,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:55:49,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:55:49,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:55:49,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:55:49,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317971217] [2020-10-27 23:55:49,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:55:49,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:55:49,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614413759] [2020-10-27 23:55:49,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:55:49,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:55:49,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:55:49,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:55:49,419 INFO L87 Difference]: Start difference. First operand 2072 states and 3205 transitions. Second operand 7 states. [2020-10-27 23:55:49,677 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:55:50,541 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:55:50,791 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:55:51,045 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:55:51,304 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:55:52,381 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:55:52,644 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:55:53,171 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:55:53,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:55:53,262 INFO L93 Difference]: Finished difference Result 8565 states and 13438 transitions. [2020-10-27 23:55:53,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:55:53,263 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-10-27 23:55:53,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:55:53,299 INFO L225 Difference]: With dead ends: 8565 [2020-10-27 23:55:53,300 INFO L226 Difference]: Without dead ends: 7389 [2020-10-27 23:55:53,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:55:53,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7389 states. [2020-10-27 23:55:53,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7389 to 2670. [2020-10-27 23:55:53,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2670 states. [2020-10-27 23:55:53,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4145 transitions. [2020-10-27 23:55:53,552 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4145 transitions. Word has length 99 [2020-10-27 23:55:53,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:55:53,552 INFO L481 AbstractCegarLoop]: Abstraction has 2670 states and 4145 transitions. [2020-10-27 23:55:53,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:55:53,553 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4145 transitions. [2020-10-27 23:55:53,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 23:55:53,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:55:53,555 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] [2020-10-27 23:55:53,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:55:53,556 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:55:53,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:55:53,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1249328421, now seen corresponding path program 1 times [2020-10-27 23:55:53,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:55:53,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117713814] [2020-10-27 23:55:53,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:55:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:55:53,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:53,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:53,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:53,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:53,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:53,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:53,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:54,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:57,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:57,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:57,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:58,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:55:58,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 23:55:58,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:55:58,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 23:55:58,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:55:58,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:55:58,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 23:55:58,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 23:55:58,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:55:58,860 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:55:58,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:55:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:55:58,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:58,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:55:58,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:55:58,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:55:58,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 23:55:58,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:55:58,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:55:58,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:55:58,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:55:58,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:55:58,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:55:58,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117713814] [2020-10-27 23:55:58,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:55:58,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:55:58,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954153891] [2020-10-27 23:55:58,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:55:58,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:55:58,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:55:58,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:55:58,937 INFO L87 Difference]: Start difference. First operand 2670 states and 4145 transitions. Second operand 7 states. [2020-10-27 23:55:59,212 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:56:00,032 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:56:00,283 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:56:00,542 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:56:00,761 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:56:01,806 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:56:02,035 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:56:02,595 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:56:02,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:56:02,705 INFO L93 Difference]: Finished difference Result 9399 states and 14752 transitions. [2020-10-27 23:56:02,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:56:02,706 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-10-27 23:56:02,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:56:02,733 INFO L225 Difference]: With dead ends: 9399 [2020-10-27 23:56:02,733 INFO L226 Difference]: Without dead ends: 8207 [2020-10-27 23:56:02,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:56:02,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8207 states. [2020-10-27 23:56:03,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8207 to 3288. [2020-10-27 23:56:03,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3288 states. [2020-10-27 23:56:03,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3288 states to 3288 states and 5117 transitions. [2020-10-27 23:56:03,107 INFO L78 Accepts]: Start accepts. Automaton has 3288 states and 5117 transitions. Word has length 99 [2020-10-27 23:56:03,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:56:03,107 INFO L481 AbstractCegarLoop]: Abstraction has 3288 states and 5117 transitions. [2020-10-27 23:56:03,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:56:03,107 INFO L276 IsEmpty]: Start isEmpty. Operand 3288 states and 5117 transitions. [2020-10-27 23:56:03,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 23:56:03,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:56:03,111 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] [2020-10-27 23:56:03,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:56:03,111 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:56:03,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:56:03,112 INFO L82 PathProgramCache]: Analyzing trace with hash -124718811, now seen corresponding path program 1 times [2020-10-27 23:56:03,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:56:03,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209699596] [2020-10-27 23:56:03,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:56:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:56:03,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:03,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:03,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:03,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:03,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:03,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:04,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:04,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:04,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:05,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:05,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:05,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:07,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:07,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:08,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:56:08,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 23:56:08,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:56:08,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 23:56:08,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:56:08,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:56:08,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:56:08,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 23:56:08,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:56:08,467 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:56:08,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:56:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:56:08,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:08,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:56:08,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:56:08,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:56:08,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:56:08,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:56:08,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:56:08,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:56:08,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:56:08,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:56:08,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:56:08,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209699596] [2020-10-27 23:56:08,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:56:08,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:56:08,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048942222] [2020-10-27 23:56:08,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:56:08,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:56:08,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:56:08,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:56:08,517 INFO L87 Difference]: Start difference. First operand 3288 states and 5117 transitions. Second operand 7 states. [2020-10-27 23:56:08,780 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:56:09,647 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:56:09,911 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:56:10,136 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:56:10,378 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:56:12,013 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:56:12,253 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:56:12,776 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:56:12,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:56:12,847 INFO L93 Difference]: Finished difference Result 15972 states and 25042 transitions. [2020-10-27 23:56:12,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:56:12,848 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 100 [2020-10-27 23:56:12,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:56:12,883 INFO L225 Difference]: With dead ends: 15972 [2020-10-27 23:56:12,883 INFO L226 Difference]: Without dead ends: 14760 [2020-10-27 23:56:12,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:56:12,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14760 states. [2020-10-27 23:56:13,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14760 to 3951. [2020-10-27 23:56:13,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3951 states. [2020-10-27 23:56:13,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 6119 transitions. [2020-10-27 23:56:13,574 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 6119 transitions. Word has length 100 [2020-10-27 23:56:13,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:56:13,574 INFO L481 AbstractCegarLoop]: Abstraction has 3951 states and 6119 transitions. [2020-10-27 23:56:13,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:56:13,575 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 6119 transitions. [2020-10-27 23:56:13,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 23:56:13,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:56:13,579 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] [2020-10-27 23:56:13,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:56:13,579 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:56:13,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:56:13,580 INFO L82 PathProgramCache]: Analyzing trace with hash 2127968694, now seen corresponding path program 1 times [2020-10-27 23:56:13,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:56:13,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911968006] [2020-10-27 23:56:13,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:56:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:56:13,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:13,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:13,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:13,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:13,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:14,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:14,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:14,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:14,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:14,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:15,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:15,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:16,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:17,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:18,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:56:18,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 23:56:18,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:56:18,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 23:56:18,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:56:18,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:56:18,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:56:18,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 23:56:18,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:56:18,949 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:56:18,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:56:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:56:18,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:18,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:56:18,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:56:18,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:56:18,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:56:18,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:56:18,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:56:18,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:56:18,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:56:18,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:56:19,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:56:19,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911968006] [2020-10-27 23:56:19,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:56:19,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:56:19,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247147555] [2020-10-27 23:56:19,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:56:19,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:56:19,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:56:19,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:56:19,005 INFO L87 Difference]: Start difference. First operand 3951 states and 6119 transitions. Second operand 7 states. [2020-10-27 23:56:19,304 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:56:20,249 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:56:20,497 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:56:20,724 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:56:20,956 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:56:22,772 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:56:23,016 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:56:23,719 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:56:23,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:56:23,887 INFO L93 Difference]: Finished difference Result 16846 states and 26338 transitions. [2020-10-27 23:56:23,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:56:23,887 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 100 [2020-10-27 23:56:23,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:56:23,919 INFO L225 Difference]: With dead ends: 16846 [2020-10-27 23:56:23,920 INFO L226 Difference]: Without dead ends: 14564 [2020-10-27 23:56:23,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:56:23,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14564 states. [2020-10-27 23:56:24,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14564 to 5125. [2020-10-27 23:56:24,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5125 states. [2020-10-27 23:56:24,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5125 states to 5125 states and 7955 transitions. [2020-10-27 23:56:24,751 INFO L78 Accepts]: Start accepts. Automaton has 5125 states and 7955 transitions. Word has length 100 [2020-10-27 23:56:24,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:56:24,752 INFO L481 AbstractCegarLoop]: Abstraction has 5125 states and 7955 transitions. [2020-10-27 23:56:24,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:56:24,752 INFO L276 IsEmpty]: Start isEmpty. Operand 5125 states and 7955 transitions. [2020-10-27 23:56:24,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 23:56:24,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:56:24,756 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] [2020-10-27 23:56:24,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:56:24,757 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:56:24,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:56:24,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1190698425, now seen corresponding path program 1 times [2020-10-27 23:56:24,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:56:24,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362471683] [2020-10-27 23:56:24,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:56:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:56:24,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:24,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:24,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:24,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:25,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:25,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:25,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:25,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:25,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:25,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:26,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:27,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:27,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:27,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:29,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:56:29,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 23:56:29,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:56:29,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 23:56:29,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:56:29,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:56:29,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:56:29,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 23:56:29,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:56:30,050 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:56:30,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:56:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:56:30,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:30,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:56:30,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:56:30,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:56:30,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:56:30,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:56:30,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:56:30,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:56:30,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:56:30,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:56:30,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:56:30,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362471683] [2020-10-27 23:56:30,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:56:30,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:56:30,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820354160] [2020-10-27 23:56:30,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:56:30,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:56:30,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:56:30,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:56:30,100 INFO L87 Difference]: Start difference. First operand 5125 states and 7955 transitions. Second operand 7 states. [2020-10-27 23:56:30,383 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:56:31,270 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:56:31,519 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:56:31,741 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:56:31,968 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:56:33,768 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:56:33,998 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:56:34,843 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:56:35,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:56:35,082 INFO L93 Difference]: Finished difference Result 18522 states and 28962 transitions. [2020-10-27 23:56:35,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:56:35,082 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 100 [2020-10-27 23:56:35,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:56:35,112 INFO L225 Difference]: With dead ends: 18522 [2020-10-27 23:56:35,112 INFO L226 Difference]: Without dead ends: 16224 [2020-10-27 23:56:35,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:56:35,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16224 states. [2020-10-27 23:56:35,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16224 to 6319. [2020-10-27 23:56:35,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6319 states. [2020-10-27 23:56:35,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6319 states to 6319 states and 9823 transitions. [2020-10-27 23:56:35,891 INFO L78 Accepts]: Start accepts. Automaton has 6319 states and 9823 transitions. Word has length 100 [2020-10-27 23:56:35,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:56:35,892 INFO L481 AbstractCegarLoop]: Abstraction has 6319 states and 9823 transitions. [2020-10-27 23:56:35,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:56:35,892 INFO L276 IsEmpty]: Start isEmpty. Operand 6319 states and 9823 transitions. [2020-10-27 23:56:35,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 23:56:35,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:56:35,896 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] [2020-10-27 23:56:35,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:56:35,897 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:56:35,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:56:35,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1678234920, now seen corresponding path program 1 times [2020-10-27 23:56:35,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:56:35,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902103352] [2020-10-27 23:56:35,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:56:35,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:56:35,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:35,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:36,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:36,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:36,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:36,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:36,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:36,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:37,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:37,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:37,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:37,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:38,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:38,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:38,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:38,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:39,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:39,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:40,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:56:40,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 23:56:40,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-27 23:56:40,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 23:56:40,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:56:40,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 23:56:40,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 23:56:40,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 23:56:40,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:56:41,202 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 14 [2020-10-27 23:56:41,477 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:56:41,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:56:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:56:41,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:41,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:56:41,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:56:41,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:56:41,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:56:41,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:56:41,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:56:41,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:56:41,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:56:41,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:56:41,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:56:41,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902103352] [2020-10-27 23:56:41,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:56:41,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:56:41,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365987757] [2020-10-27 23:56:41,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:56:41,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:56:41,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:56:41,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:56:41,529 INFO L87 Difference]: Start difference. First operand 6319 states and 9823 transitions. Second operand 10 states. [2020-10-27 23:56:41,772 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:56:43,177 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:56:48,580 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:56:49,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:56:49,075 INFO L93 Difference]: Finished difference Result 41832 states and 64321 transitions. [2020-10-27 23:56:49,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 23:56:49,075 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 100 [2020-10-27 23:56:49,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:56:49,140 INFO L225 Difference]: With dead ends: 41832 [2020-10-27 23:56:49,140 INFO L226 Difference]: Without dead ends: 36327 [2020-10-27 23:56:49,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2020-10-27 23:56:49,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36327 states. [2020-10-27 23:56:50,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36327 to 6282. [2020-10-27 23:56:50,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6282 states. [2020-10-27 23:56:50,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6282 states to 6282 states and 9745 transitions. [2020-10-27 23:56:50,302 INFO L78 Accepts]: Start accepts. Automaton has 6282 states and 9745 transitions. Word has length 100 [2020-10-27 23:56:50,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:56:50,302 INFO L481 AbstractCegarLoop]: Abstraction has 6282 states and 9745 transitions. [2020-10-27 23:56:50,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:56:50,302 INFO L276 IsEmpty]: Start isEmpty. Operand 6282 states and 9745 transitions. [2020-10-27 23:56:50,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 23:56:50,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:56:50,306 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] [2020-10-27 23:56:50,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 23:56:50,307 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:56:50,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:56:50,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1977667609, now seen corresponding path program 1 times [2020-10-27 23:56:50,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:56:50,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635489691] [2020-10-27 23:56:50,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:56:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:56:50,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:50,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:50,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:50,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:50,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:50,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:51,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:51,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:51,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:53,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:53,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:53,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:53,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:54,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:55,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:56:55,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 23:56:55,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:56:55,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 23:56:55,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:56:55,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 23:56:55,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 23:56:55,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 23:56:55,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:56:55,726 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:56:55,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:56:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:56:55,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:55,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:56:55,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:56:55,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:56:55,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:56:55,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:56:55,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:56:55,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:56:55,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:56:55,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:56:55,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:56:55,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635489691] [2020-10-27 23:56:55,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:56:55,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:56:55,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642170619] [2020-10-27 23:56:55,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:56:55,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:56:55,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:56:55,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:56:55,775 INFO L87 Difference]: Start difference. First operand 6282 states and 9745 transitions. Second operand 10 states. [2020-10-27 23:56:56,039 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:56:57,658 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:57:04,014 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:57:09,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:57:09,344 INFO L93 Difference]: Finished difference Result 79933 states and 123339 transitions. [2020-10-27 23:57:09,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 23:57:09,344 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 100 [2020-10-27 23:57:09,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:57:09,483 INFO L225 Difference]: With dead ends: 79933 [2020-10-27 23:57:09,483 INFO L226 Difference]: Without dead ends: 73884 [2020-10-27 23:57:09,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=197, Invalid=673, Unknown=0, NotChecked=0, Total=870 [2020-10-27 23:57:09,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73884 states. [2020-10-27 23:57:11,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73884 to 6397. [2020-10-27 23:57:11,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6397 states. [2020-10-27 23:57:11,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6397 states to 6397 states and 9790 transitions. [2020-10-27 23:57:11,338 INFO L78 Accepts]: Start accepts. Automaton has 6397 states and 9790 transitions. Word has length 100 [2020-10-27 23:57:11,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:57:11,339 INFO L481 AbstractCegarLoop]: Abstraction has 6397 states and 9790 transitions. [2020-10-27 23:57:11,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:57:11,339 INFO L276 IsEmpty]: Start isEmpty. Operand 6397 states and 9790 transitions. [2020-10-27 23:57:11,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 23:57:11,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:57:11,343 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] [2020-10-27 23:57:11,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 23:57:11,343 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:57:11,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:57:11,343 INFO L82 PathProgramCache]: Analyzing trace with hash -65633219, now seen corresponding path program 1 times [2020-10-27 23:57:11,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:57:11,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208322954] [2020-10-27 23:57:11,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:57:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:57:11,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:11,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:11,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:11,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:12,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:12,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:12,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:12,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:13,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:14,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:14,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:14,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:14,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:14,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:14,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:16,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:16,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:16,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:57:16,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 23:57:16,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 23:57:16,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 23:57:16,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:57:16,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 23:57:16,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 23:57:16,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 23:57:16,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:57:16,944 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:57:16,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:57:16,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:57:16,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:16,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:57:16,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:57:16,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:57:16,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:57:16,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:57:16,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:57:16,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:57:16,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:57:16,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:57:17,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:57:17,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208322954] [2020-10-27 23:57:17,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:57:17,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 23:57:17,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453448633] [2020-10-27 23:57:17,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 23:57:17,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:57:17,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 23:57:17,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-27 23:57:17,004 INFO L87 Difference]: Start difference. First operand 6397 states and 9790 transitions. Second operand 14 states. [2020-10-27 23:57:17,659 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 196 [2020-10-27 23:57:20,456 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 196 [2020-10-27 23:57:20,979 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-10-27 23:57:21,306 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:57:21,598 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:57:23,893 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-10-27 23:57:29,232 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:57:31,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:57:31,058 INFO L93 Difference]: Finished difference Result 35805 states and 54420 transitions. [2020-10-27 23:57:31,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-27 23:57:31,058 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 100 [2020-10-27 23:57:31,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:57:31,092 INFO L225 Difference]: With dead ends: 35805 [2020-10-27 23:57:31,092 INFO L226 Difference]: Without dead ends: 33662 [2020-10-27 23:57:31,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1310 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=628, Invalid=3532, Unknown=0, NotChecked=0, Total=4160 [2020-10-27 23:57:31,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33662 states. [2020-10-27 23:57:32,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33662 to 6403. [2020-10-27 23:57:32,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6403 states. [2020-10-27 23:57:32,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6403 states to 6403 states and 9796 transitions. [2020-10-27 23:57:32,453 INFO L78 Accepts]: Start accepts. Automaton has 6403 states and 9796 transitions. Word has length 100 [2020-10-27 23:57:32,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:57:32,453 INFO L481 AbstractCegarLoop]: Abstraction has 6403 states and 9796 transitions. [2020-10-27 23:57:32,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 23:57:32,453 INFO L276 IsEmpty]: Start isEmpty. Operand 6403 states and 9796 transitions. [2020-10-27 23:57:32,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 23:57:32,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:57:32,457 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] [2020-10-27 23:57:32,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 23:57:32,458 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:57:32,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:57:32,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1242315308, now seen corresponding path program 1 times [2020-10-27 23:57:32,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:57:32,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903710146] [2020-10-27 23:57:32,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:57:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:57:32,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:32,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:32,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:32,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:33,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:33,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:33,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:33,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:34,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:35,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:35,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:35,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:37,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:57:37,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 23:57:37,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:57:37,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 23:57:37,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:57:37,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:57:37,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:57:37,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 23:57:37,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:57:37,747 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:57:37,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:57:37,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:57:37,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:37,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:57:37,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:57:37,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:57:37,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:57:37,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:57:37,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:57:37,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:57:37,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:57:37,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:57:37,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:57:37,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903710146] [2020-10-27 23:57:37,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:57:37,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:57:37,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054929342] [2020-10-27 23:57:37,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:57:37,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:57:37,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:57:37,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:57:37,779 INFO L87 Difference]: Start difference. First operand 6403 states and 9796 transitions. Second operand 7 states. [2020-10-27 23:57:38,043 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:57:39,099 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:57:39,347 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:57:39,576 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:57:39,821 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:57:42,566 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:57:42,803 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:57:44,147 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:57:44,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:57:44,549 INFO L93 Difference]: Finished difference Result 20189 states and 31151 transitions. [2020-10-27 23:57:44,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:57:44,549 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 100 [2020-10-27 23:57:44,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:57:44,566 INFO L225 Difference]: With dead ends: 20189 [2020-10-27 23:57:44,566 INFO L226 Difference]: Without dead ends: 17850 [2020-10-27 23:57:44,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:57:44,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17850 states. [2020-10-27 23:57:46,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17850 to 7647. [2020-10-27 23:57:46,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7647 states. [2020-10-27 23:57:46,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7647 states to 7647 states and 11722 transitions. [2020-10-27 23:57:46,178 INFO L78 Accepts]: Start accepts. Automaton has 7647 states and 11722 transitions. Word has length 100 [2020-10-27 23:57:46,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:57:46,178 INFO L481 AbstractCegarLoop]: Abstraction has 7647 states and 11722 transitions. [2020-10-27 23:57:46,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:57:46,178 INFO L276 IsEmpty]: Start isEmpty. Operand 7647 states and 11722 transitions. [2020-10-27 23:57:46,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 23:57:46,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:57:46,182 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] [2020-10-27 23:57:46,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 23:57:46,182 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:57:46,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:57:46,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1870377305, now seen corresponding path program 1 times [2020-10-27 23:57:46,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:57:46,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208054057] [2020-10-27 23:57:46,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:57:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:57:46,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:46,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:46,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:46,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:46,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:47,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:47,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:47,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:48,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:48,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:48,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:48,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:48,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:48,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:48,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:51,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:57:51,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 23:57:51,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 23:57:51,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 23:57:51,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:57:51,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:57:51,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 23:57:51,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 23:57:51,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:57:51,470 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:57:51,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:57:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:57:51,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:51,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:57:51,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:57:51,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:57:51,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:57:51,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:57:51,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:57:51,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:57:51,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:57:51,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:57:51,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:57:51,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208054057] [2020-10-27 23:57:51,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:57:51,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:57:51,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547096581] [2020-10-27 23:57:51,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:57:51,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:57:51,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:57:51,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:57:51,502 INFO L87 Difference]: Start difference. First operand 7647 states and 11722 transitions. Second operand 7 states. [2020-10-27 23:57:51,762 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:57:52,937 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:57:53,224 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:57:53,502 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:57:53,770 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:57:59,218 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:57:59,508 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:58:01,194 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:58:01,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:58:01,733 INFO L93 Difference]: Finished difference Result 35526 states and 55106 transitions. [2020-10-27 23:58:01,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:58:01,733 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 101 [2020-10-27 23:58:01,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:58:01,770 INFO L225 Difference]: With dead ends: 35526 [2020-10-27 23:58:01,770 INFO L226 Difference]: Without dead ends: 32111 [2020-10-27 23:58:01,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:58:01,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32111 states. [2020-10-27 23:58:04,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32111 to 9895. [2020-10-27 23:58:04,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9895 states. [2020-10-27 23:58:04,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9895 states to 9895 states and 15232 transitions. [2020-10-27 23:58:04,284 INFO L78 Accepts]: Start accepts. Automaton has 9895 states and 15232 transitions. Word has length 101 [2020-10-27 23:58:04,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:58:04,284 INFO L481 AbstractCegarLoop]: Abstraction has 9895 states and 15232 transitions. [2020-10-27 23:58:04,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:58:04,284 INFO L276 IsEmpty]: Start isEmpty. Operand 9895 states and 15232 transitions. [2020-10-27 23:58:04,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 23:58:04,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:58:04,288 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] [2020-10-27 23:58:04,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 23:58:04,288 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:58:04,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:58:04,288 INFO L82 PathProgramCache]: Analyzing trace with hash -171902486, now seen corresponding path program 1 times [2020-10-27 23:58:04,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:58:04,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378213292] [2020-10-27 23:58:04,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:58:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:58:04,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:04,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:04,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:04,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:04,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:05,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:06,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:06,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:06,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:06,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:07,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:07,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:07,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:07,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:08,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:08,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:09,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:58:09,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 23:58:09,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:58:09,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 23:58:09,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:58:09,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:58:09,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 23:58:09,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 23:58:09,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:58:09,570 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:58:09,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:58:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:58:09,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:09,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:58:09,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:58:09,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:58:09,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:58:09,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:58:09,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:58:09,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:58:09,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:58:09,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:58:09,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:58:09,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378213292] [2020-10-27 23:58:09,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:58:09,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:58:09,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595772900] [2020-10-27 23:58:09,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:58:09,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:58:09,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:58:09,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:58:09,602 INFO L87 Difference]: Start difference. First operand 9895 states and 15232 transitions. Second operand 6 states. [2020-10-27 23:58:09,864 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:58:11,645 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:58:11,967 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:58:22,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:58:22,881 INFO L93 Difference]: Finished difference Result 50291 states and 78074 transitions. [2020-10-27 23:58:22,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 23:58:22,882 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-10-27 23:58:22,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:58:22,932 INFO L225 Difference]: With dead ends: 50291 [2020-10-27 23:58:22,932 INFO L226 Difference]: Without dead ends: 44537 [2020-10-27 23:58:22,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 23:58:22,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44537 states. [2020-10-27 23:58:29,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44537 to 27717. [2020-10-27 23:58:29,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27717 states. [2020-10-27 23:58:29,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27717 states to 27717 states and 42888 transitions. [2020-10-27 23:58:29,458 INFO L78 Accepts]: Start accepts. Automaton has 27717 states and 42888 transitions. Word has length 101 [2020-10-27 23:58:29,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:58:29,458 INFO L481 AbstractCegarLoop]: Abstraction has 27717 states and 42888 transitions. [2020-10-27 23:58:29,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:58:29,459 INFO L276 IsEmpty]: Start isEmpty. Operand 27717 states and 42888 transitions. [2020-10-27 23:58:29,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 23:58:29,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:58:29,468 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] [2020-10-27 23:58:29,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 23:58:29,469 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:58:29,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:58:29,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1440699215, now seen corresponding path program 1 times [2020-10-27 23:58:29,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:58:29,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206837894] [2020-10-27 23:58:29,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:58:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:58:29,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:29,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:29,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:29,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:29,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:30,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:30,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:30,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:32,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking...