/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 06:07:35,916 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 06:07:35,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 06:07:35,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 06:07:35,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 06:07:35,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 06:07:35,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 06:07:35,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 06:07:36,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 06:07:36,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 06:07:36,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 06:07:36,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 06:07:36,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 06:07:36,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 06:07:36,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 06:07:36,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 06:07:36,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 06:07:36,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 06:07:36,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 06:07:36,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 06:07:36,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 06:07:36,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 06:07:36,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 06:07:36,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 06:07:36,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 06:07:36,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 06:07:36,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 06:07:36,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 06:07:36,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 06:07:36,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 06:07:36,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 06:07:36,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 06:07:36,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 06:07:36,070 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 06:07:36,071 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 06:07:36,071 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 06:07:36,072 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 06:07:36,072 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 06:07:36,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 06:07:36,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 06:07:36,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 06:07:36,082 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 06:07:36,134 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 06:07:36,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 06:07:36,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 06:07:36,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 06:07:36,136 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 06:07:36,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 06:07:36,137 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 06:07:36,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 06:07:36,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 06:07:36,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 06:07:36,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 06:07:36,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 06:07:36,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 06:07:36,138 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 06:07:36,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 06:07:36,139 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 06:07:36,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 06:07:36,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 06:07:36,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 06:07:36,140 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 06:07:36,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 06:07:36,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:07:36,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 06:07:36,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 06:07:36,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 06:07:36,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 06:07:36,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 06:07:36,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 06:07:36,141 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 06:07:36,141 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 06:07:36,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 06:07:36,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 06:07:36,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 06:07:36,550 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 06:07:36,551 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 06:07:36,552 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-27 06:07:36,632 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/588b59fc8/4bfbd005b6b4447887d989ed66d47dc2/FLAGc75edab13 [2020-10-27 06:07:37,510 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 06:07:37,511 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-27 06:07:37,534 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/588b59fc8/4bfbd005b6b4447887d989ed66d47dc2/FLAGc75edab13 [2020-10-27 06:07:37,705 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/588b59fc8/4bfbd005b6b4447887d989ed66d47dc2 [2020-10-27 06:07:37,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 06:07:37,716 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 06:07:37,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 06:07:37,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 06:07:37,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 06:07:37,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:07:37" (1/1) ... [2020-10-27 06:07:37,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33743a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:37, skipping insertion in model container [2020-10-27 06:07:37,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:07:37" (1/1) ... [2020-10-27 06:07:37,736 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 06:07:37,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 06:07:38,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:07:38,956 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 06:07:39,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:07:39,493 INFO L208 MainTranslator]: Completed translation [2020-10-27 06:07:39,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:39 WrapperNode [2020-10-27 06:07:39,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 06:07:39,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 06:07:39,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 06:07:39,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 06:07:39,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:39" (1/1) ... [2020-10-27 06:07:39,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:39" (1/1) ... [2020-10-27 06:07:39,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:39" (1/1) ... [2020-10-27 06:07:39,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:39" (1/1) ... [2020-10-27 06:07:39,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:39" (1/1) ... [2020-10-27 06:07:39,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:39" (1/1) ... [2020-10-27 06:07:39,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:39" (1/1) ... [2020-10-27 06:07:39,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 06:07:39,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 06:07:39,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 06:07:39,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 06:07:39,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:39" (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 06:07:39,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 06:07:39,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 06:07:39,853 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 06:07:39,854 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 06:07:39,854 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 06:07:39,855 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 06:07:39,855 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 06:07:39,855 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 06:07:39,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 06:07:39,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 06:07:39,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 06:07:39,857 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 06:07:39,857 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 06:07:39,857 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 06:07:39,857 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 06:07:39,858 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 06:07:39,858 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 06:07:39,859 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 06:07:39,859 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 06:07:39,859 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 06:07:39,859 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 06:07:39,859 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 06:07:39,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 06:07:39,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 06:07:39,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 06:07:39,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 06:07:39,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 06:07:39,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 06:07:42,912 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 06:07:42,913 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 06:07:42,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:07:42 BoogieIcfgContainer [2020-10-27 06:07:42,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 06:07:42,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 06:07:42,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 06:07:42,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 06:07:42,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:07:37" (1/3) ... [2020-10-27 06:07:42,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ec261f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:07:42, skipping insertion in model container [2020-10-27 06:07:42,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:39" (2/3) ... [2020-10-27 06:07:42,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ec261f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:07:42, skipping insertion in model container [2020-10-27 06:07:42,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:07:42" (3/3) ... [2020-10-27 06:07:42,926 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-27 06:07:42,940 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 06:07:42,946 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 06:07:42,962 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 06:07:42,998 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 06:07:42,998 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 06:07:42,998 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 06:07:42,999 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 06:07:42,999 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 06:07:42,999 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 06:07:42,999 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 06:07:42,999 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 06:07:43,036 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states. [2020-10-27 06:07:43,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-27 06:07:43,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:07:43,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:07:43,070 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:07:43,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:07:43,078 INFO L82 PathProgramCache]: Analyzing trace with hash -540047237, now seen corresponding path program 1 times [2020-10-27 06:07:43,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:07:43,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090786582] [2020-10-27 06:07:43,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:07:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:43,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:44,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:45,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:45,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:46,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:46,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:46,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:47,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:47,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:47,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:48,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:48,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:48,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:48,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:48,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:48,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-27 06:07:48,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 06:07:48,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-27 06:07:48,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:48,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:07:48,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:07:48,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-27 06:07:48,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 06:07:50,207 WARN L193 SmtUtils]: Spent 906.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-27 06:07:50,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:07:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:50,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:50,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:50,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:07:50,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:07:50,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 06:07:50,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:50,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:07:50,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:07:50,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:07:50,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:07:50,586 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 06:07:50,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090786582] [2020-10-27 06:07:50,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:07:50,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:07:50,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018687982] [2020-10-27 06:07:50,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:07:50,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:07:50,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:07:50,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:07:50,615 INFO L87 Difference]: Start difference. First operand 799 states. Second operand 5 states. [2020-10-27 06:07:59,090 WARN L193 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 319 [2020-10-27 06:08:01,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:08:01,150 INFO L93 Difference]: Finished difference Result 2339 states and 4155 transitions. [2020-10-27 06:08:01,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 06:08:01,158 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 325 [2020-10-27 06:08:01,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:08:01,209 INFO L225 Difference]: With dead ends: 2339 [2020-10-27 06:08:01,209 INFO L226 Difference]: Without dead ends: 1547 [2020-10-27 06:08:01,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:08:01,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2020-10-27 06:08:01,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1544. [2020-10-27 06:08:01,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1544 states. [2020-10-27 06:08:01,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2402 transitions. [2020-10-27 06:08:01,419 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2402 transitions. Word has length 325 [2020-10-27 06:08:01,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:08:01,422 INFO L481 AbstractCegarLoop]: Abstraction has 1544 states and 2402 transitions. [2020-10-27 06:08:01,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:08:01,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2402 transitions. [2020-10-27 06:08:01,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-27 06:08:01,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:08:01,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:08:01,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 06:08:01,444 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:08:01,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:08:01,448 INFO L82 PathProgramCache]: Analyzing trace with hash -876552536, now seen corresponding path program 1 times [2020-10-27 06:08:01,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:08:01,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494884690] [2020-10-27 06:08:01,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:08:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:01,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:01,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:01,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:02,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:02,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:02,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:03,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:03,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:03,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:03,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:03,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:04,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:04,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:04,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:06,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:06,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-27 06:08:06,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 06:08:06,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 06:08:06,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:06,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:08:06,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:08:06,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-27 06:08:06,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:07,481 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-27 06:08:07,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:08:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:07,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:07,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:07,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:08:07,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:08:07,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 06:08:07,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:07,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:08:07,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:08:07,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:08:07,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:07,768 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 06:08:07,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494884690] [2020-10-27 06:08:07,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:08:07,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:08:07,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15798324] [2020-10-27 06:08:07,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:08:07,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:08:07,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:08:07,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:08:07,787 INFO L87 Difference]: Start difference. First operand 1544 states and 2402 transitions. Second operand 5 states. [2020-10-27 06:08:14,961 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 319 [2020-10-27 06:08:17,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:08:17,090 INFO L93 Difference]: Finished difference Result 4497 states and 6978 transitions. [2020-10-27 06:08:17,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:08:17,093 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 327 [2020-10-27 06:08:17,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:08:17,112 INFO L225 Difference]: With dead ends: 4497 [2020-10-27 06:08:17,112 INFO L226 Difference]: Without dead ends: 2998 [2020-10-27 06:08:17,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:08:17,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2998 states. [2020-10-27 06:08:17,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2998 to 2995. [2020-10-27 06:08:17,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2995 states. [2020-10-27 06:08:17,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2995 states to 2995 states and 4622 transitions. [2020-10-27 06:08:17,277 INFO L78 Accepts]: Start accepts. Automaton has 2995 states and 4622 transitions. Word has length 327 [2020-10-27 06:08:17,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:08:17,278 INFO L481 AbstractCegarLoop]: Abstraction has 2995 states and 4622 transitions. [2020-10-27 06:08:17,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:08:17,278 INFO L276 IsEmpty]: Start isEmpty. Operand 2995 states and 4622 transitions. [2020-10-27 06:08:17,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-27 06:08:17,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:08:17,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:08:17,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 06:08:17,290 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:08:17,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:08:17,291 INFO L82 PathProgramCache]: Analyzing trace with hash 248305441, now seen corresponding path program 1 times [2020-10-27 06:08:17,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:08:17,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285255007] [2020-10-27 06:08:17,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:08:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:17,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:17,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:17,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:17,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:18,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:18,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:18,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:18,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:18,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:19,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:19,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:19,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:19,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:19,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:19,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:22,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:22,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-27 06:08:22,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 06:08:22,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-27 06:08:22,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:22,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:08:22,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:08:22,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 06:08:22,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:23,265 WARN L193 SmtUtils]: Spent 656.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-27 06:08:23,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:08:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:23,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:23,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:23,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:08:23,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:08:23,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 06:08:23,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:23,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:08:23,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:08:23,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:08:23,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:23,507 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 06:08:23,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285255007] [2020-10-27 06:08:23,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:08:23,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:08:23,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371349379] [2020-10-27 06:08:23,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:08:23,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:08:23,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:08:23,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:08:23,511 INFO L87 Difference]: Start difference. First operand 2995 states and 4622 transitions. Second operand 5 states. [2020-10-27 06:08:30,217 WARN L193 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 319 [2020-10-27 06:08:32,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:08:32,245 INFO L93 Difference]: Finished difference Result 8718 states and 13410 transitions. [2020-10-27 06:08:32,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:08:32,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 329 [2020-10-27 06:08:32,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:08:32,277 INFO L225 Difference]: With dead ends: 8718 [2020-10-27 06:08:32,277 INFO L226 Difference]: Without dead ends: 5831 [2020-10-27 06:08:32,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:08:32,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5831 states. [2020-10-27 06:08:32,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5831 to 5828. [2020-10-27 06:08:32,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5828 states. [2020-10-27 06:08:32,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5828 states to 5828 states and 8916 transitions. [2020-10-27 06:08:32,644 INFO L78 Accepts]: Start accepts. Automaton has 5828 states and 8916 transitions. Word has length 329 [2020-10-27 06:08:32,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:08:32,645 INFO L481 AbstractCegarLoop]: Abstraction has 5828 states and 8916 transitions. [2020-10-27 06:08:32,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:08:32,645 INFO L276 IsEmpty]: Start isEmpty. Operand 5828 states and 8916 transitions. [2020-10-27 06:08:32,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-27 06:08:32,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:08:32,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:08:32,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 06:08:32,665 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:08:32,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:08:32,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1138763494, now seen corresponding path program 1 times [2020-10-27 06:08:32,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:08:32,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930818014] [2020-10-27 06:08:32,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:08:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:32,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:32,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:33,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:33,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:33,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:33,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:33,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:33,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:33,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:33,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:34,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:34,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:34,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:34,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:35,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:36,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:37,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:37,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-27 06:08:37,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 06:08:37,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 06:08:37,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:37,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:08:37,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:08:37,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-27 06:08:37,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:38,578 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-27 06:08:38,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:08:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:38,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:38,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:38,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:08:38,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:08:38,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 06:08:38,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:38,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:08:38,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:08:38,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:08:38,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:38,789 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 06:08:38,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930818014] [2020-10-27 06:08:38,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:08:38,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:08:38,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836324541] [2020-10-27 06:08:38,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:08:38,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:08:38,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:08:38,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:08:38,791 INFO L87 Difference]: Start difference. First operand 5828 states and 8916 transitions. Second operand 5 states. [2020-10-27 06:08:45,701 WARN L193 SmtUtils]: Spent 830.00 ms on a formula simplification that was a NOOP. DAG size: 319 [2020-10-27 06:08:47,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:08:47,839 INFO L93 Difference]: Finished difference Result 17082 states and 26072 transitions. [2020-10-27 06:08:47,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:08:47,840 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 331 [2020-10-27 06:08:47,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:08:47,897 INFO L225 Difference]: With dead ends: 17082 [2020-10-27 06:08:47,898 INFO L226 Difference]: Without dead ends: 11371 [2020-10-27 06:08:47,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:08:47,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11371 states. [2020-10-27 06:08:48,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11371 to 11368. [2020-10-27 06:08:48,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11368 states. [2020-10-27 06:08:48,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11368 states to 11368 states and 17242 transitions. [2020-10-27 06:08:48,492 INFO L78 Accepts]: Start accepts. Automaton has 11368 states and 17242 transitions. Word has length 331 [2020-10-27 06:08:48,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:08:48,492 INFO L481 AbstractCegarLoop]: Abstraction has 11368 states and 17242 transitions. [2020-10-27 06:08:48,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:08:48,493 INFO L276 IsEmpty]: Start isEmpty. Operand 11368 states and 17242 transitions. [2020-10-27 06:08:48,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-27 06:08:48,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:08:48,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:08:48,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 06:08:48,522 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:08:48,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:08:48,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1771032334, now seen corresponding path program 1 times [2020-10-27 06:08:48,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:08:48,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875801990] [2020-10-27 06:08:48,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:08:48,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:48,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:48,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:48,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:48,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:48,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:48,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:49,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:49,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:49,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:49,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:49,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:50,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:50,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:51,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:51,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:53,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:53,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-27 06:08:53,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 06:08:53,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 06:08:53,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:53,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:08:53,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:08:53,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-27 06:08:53,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:54,400 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-27 06:08:54,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:08:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:54,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:54,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:54,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:08:54,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:08:54,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 06:08:54,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:54,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:08:54,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:08:54,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:08:54,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:54,590 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 06:08:54,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875801990] [2020-10-27 06:08:54,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:08:54,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:08:54,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87258008] [2020-10-27 06:08:54,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:08:54,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:08:54,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:08:54,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:08:54,592 INFO L87 Difference]: Start difference. First operand 11368 states and 17242 transitions. Second operand 5 states. [2020-10-27 06:09:01,878 WARN L193 SmtUtils]: Spent 824.00 ms on a formula simplification that was a NOOP. DAG size: 319 [2020-10-27 06:09:03,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:09:03,922 INFO L93 Difference]: Finished difference Result 33098 states and 50042 transitions. [2020-10-27 06:09:03,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:09:03,923 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 333 [2020-10-27 06:09:03,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:09:04,004 INFO L225 Difference]: With dead ends: 33098 [2020-10-27 06:09:04,005 INFO L226 Difference]: Without dead ends: 22135 [2020-10-27 06:09:04,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:09:04,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22135 states. [2020-10-27 06:09:05,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22135 to 22132. [2020-10-27 06:09:05,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22132 states. [2020-10-27 06:09:05,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22132 states to 22132 states and 33250 transitions. [2020-10-27 06:09:05,189 INFO L78 Accepts]: Start accepts. Automaton has 22132 states and 33250 transitions. Word has length 333 [2020-10-27 06:09:05,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:09:05,189 INFO L481 AbstractCegarLoop]: Abstraction has 22132 states and 33250 transitions. [2020-10-27 06:09:05,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:09:05,189 INFO L276 IsEmpty]: Start isEmpty. Operand 22132 states and 33250 transitions. [2020-10-27 06:09:05,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-27 06:09:05,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:09:05,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:09:05,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 06:09:05,238 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:09:05,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:09:05,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1303778933, now seen corresponding path program 1 times [2020-10-27 06:09:05,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:09:05,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292770929] [2020-10-27 06:09:05,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:09:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:05,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:05,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:05,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:05,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:05,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:05,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:05,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:05,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:05,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:07,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:07,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:08,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:08,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:08,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:08,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:09,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:09,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:09,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:10,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:10,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 343 [2020-10-27 06:09:10,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-27 06:09:10,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 06:09:10,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:10,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:09:10,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:09:10,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-27 06:09:10,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:11,200 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-27 06:09:11,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:09:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:11,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:11,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:11,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:09:11,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:09:11,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 06:09:11,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:11,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:09:11,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:09:11,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:09:11,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:11,462 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 06:09:11,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292770929] [2020-10-27 06:09:11,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:09:11,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:09:11,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623593859] [2020-10-27 06:09:11,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:09:11,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:09:11,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:09:11,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:09:11,465 INFO L87 Difference]: Start difference. First operand 22132 states and 33250 transitions. Second operand 5 states. [2020-10-27 06:09:19,642 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 319 [2020-10-27 06:09:22,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:09:22,181 INFO L93 Difference]: Finished difference Result 64447 states and 96516 transitions. [2020-10-27 06:09:22,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:09:22,182 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 335 [2020-10-27 06:09:22,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:09:22,275 INFO L225 Difference]: With dead ends: 64447 [2020-10-27 06:09:22,276 INFO L226 Difference]: Without dead ends: 43252 [2020-10-27 06:09:22,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:09:22,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43252 states. [2020-10-27 06:09:24,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43252 to 43249. [2020-10-27 06:09:24,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43249 states. [2020-10-27 06:09:24,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43249 states to 43249 states and 64480 transitions. [2020-10-27 06:09:24,282 INFO L78 Accepts]: Start accepts. Automaton has 43249 states and 64480 transitions. Word has length 335 [2020-10-27 06:09:24,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:09:24,282 INFO L481 AbstractCegarLoop]: Abstraction has 43249 states and 64480 transitions. [2020-10-27 06:09:24,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:09:24,282 INFO L276 IsEmpty]: Start isEmpty. Operand 43249 states and 64480 transitions. [2020-10-27 06:09:24,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-27 06:09:24,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:09:24,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:09:24,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 06:09:24,541 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:09:24,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:09:24,542 INFO L82 PathProgramCache]: Analyzing trace with hash -2115854917, now seen corresponding path program 1 times [2020-10-27 06:09:24,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:09:24,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721533598] [2020-10-27 06:09:24,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:09:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:24,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:24,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:24,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:24,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:24,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:25,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:25,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:25,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:25,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:25,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:25,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:25,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:25,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:25,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:25,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:29,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:29,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-27 06:09:29,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 06:09:29,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 06:09:29,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:29,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:09:29,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:09:29,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 06:09:29,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:30,506 WARN L193 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-27 06:09:30,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:09:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:30,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:30,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:30,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:09:30,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:09:30,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 06:09:30,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:30,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:09:30,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:09:30,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:09:30,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:30,659 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 06:09:30,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721533598] [2020-10-27 06:09:30,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:09:30,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:09:30,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115835015] [2020-10-27 06:09:30,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:09:30,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:09:30,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:09:30,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:09:30,662 INFO L87 Difference]: Start difference. First operand 43249 states and 64480 transitions. Second operand 5 states. [2020-10-27 06:09:40,954 WARN L193 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 319 [2020-10-27 06:09:44,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:09:44,113 INFO L93 Difference]: Finished difference Result 125818 states and 187018 transitions. [2020-10-27 06:09:44,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:09:44,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 337 [2020-10-27 06:09:44,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:09:44,271 INFO L225 Difference]: With dead ends: 125818 [2020-10-27 06:09:44,272 INFO L226 Difference]: Without dead ends: 84583 [2020-10-27 06:09:44,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:09:44,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84583 states. [2020-10-27 06:09:49,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84583 to 84580. [2020-10-27 06:09:49,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84580 states. [2020-10-27 06:09:49,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84580 states to 84580 states and 125086 transitions. [2020-10-27 06:09:49,277 INFO L78 Accepts]: Start accepts. Automaton has 84580 states and 125086 transitions. Word has length 337 [2020-10-27 06:09:49,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:09:49,278 INFO L481 AbstractCegarLoop]: Abstraction has 84580 states and 125086 transitions. [2020-10-27 06:09:49,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:09:49,278 INFO L276 IsEmpty]: Start isEmpty. Operand 84580 states and 125086 transitions. [2020-10-27 06:09:49,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-27 06:09:49,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:09:49,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:09:49,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 06:09:49,365 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:09:49,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:09:49,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1001718728, now seen corresponding path program 1 times [2020-10-27 06:09:49,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:09:49,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43268154] [2020-10-27 06:09:49,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:09:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:49,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:49,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:49,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:49,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:49,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:50,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:50,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:50,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:50,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:50,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:50,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:50,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:51,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:51,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:54,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:54,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 347 [2020-10-27 06:09:54,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 06:09:54,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-27 06:09:54,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:54,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:09:54,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:09:54,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-27 06:09:54,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:55,281 WARN L193 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-27 06:09:55,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:09:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:55,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:55,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:55,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:09:55,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:09:55,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 06:09:55,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:55,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:09:55,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:09:55,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:09:55,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:55,471 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 06:09:55,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43268154] [2020-10-27 06:09:55,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:09:55,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:09:55,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287814684] [2020-10-27 06:09:55,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:09:55,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:09:55,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:09:55,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:09:55,474 INFO L87 Difference]: Start difference. First operand 84580 states and 125086 transitions. Second operand 5 states. [2020-10-27 06:10:08,334 WARN L193 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 319 [2020-10-27 06:10:12,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:10:12,411 INFO L93 Difference]: Finished difference Result 248707 states and 366994 transitions. [2020-10-27 06:10:12,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:10:12,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 339 [2020-10-27 06:10:12,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:10:12,916 INFO L225 Difference]: With dead ends: 248707 [2020-10-27 06:10:12,916 INFO L226 Difference]: Without dead ends: 164581 [2020-10-27 06:10:13,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:10:13,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164581 states. [2020-10-27 06:10:22,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164581 to 164578. [2020-10-27 06:10:22,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164578 states. [2020-10-27 06:10:23,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164578 states to 164578 states and 241220 transitions. [2020-10-27 06:10:23,342 INFO L78 Accepts]: Start accepts. Automaton has 164578 states and 241220 transitions. Word has length 339 [2020-10-27 06:10:23,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:10:23,342 INFO L481 AbstractCegarLoop]: Abstraction has 164578 states and 241220 transitions. [2020-10-27 06:10:23,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:10:23,342 INFO L276 IsEmpty]: Start isEmpty. Operand 164578 states and 241220 transitions. [2020-10-27 06:10:23,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-27 06:10:23,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:10:23,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:10:23,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 06:10:23,709 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:10:23,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:10:23,710 INFO L82 PathProgramCache]: Analyzing trace with hash 344006063, now seen corresponding path program 1 times [2020-10-27 06:10:23,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:10:23,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218306439] [2020-10-27 06:10:23,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:10:23,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:23,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:23,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:23,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:23,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:23,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:23,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:24,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:24,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:24,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:24,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:24,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:24,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:28,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:28,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-27 06:10:28,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 06:10:28,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-27 06:10:28,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:28,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:10:28,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 06:10:28,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:10:28,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:29,668 WARN L193 SmtUtils]: Spent 778.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-27 06:10:29,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:10:29,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:29,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:29,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:29,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:10:29,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:10:29,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 06:10:29,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:29,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:10:29,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:10:29,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:10:29,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:29,768 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 06:10:29,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218306439] [2020-10-27 06:10:29,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:10:29,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 06:10:29,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151519417] [2020-10-27 06:10:29,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 06:10:29,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:10:29,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 06:10:29,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 06:10:29,773 INFO L87 Difference]: Start difference. First operand 164578 states and 241220 transitions. Second operand 4 states. [2020-10-27 06:10:57,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:10:57,396 INFO L93 Difference]: Finished difference Result 492889 states and 722421 transitions. [2020-10-27 06:10:57,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 06:10:57,398 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 341 [2020-10-27 06:10:57,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:10:58,126 INFO L225 Difference]: With dead ends: 492889 [2020-10-27 06:10:58,127 INFO L226 Difference]: Without dead ends: 328610 [2020-10-27 06:10:58,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 06:10:58,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328610 states. [2020-10-27 06:11:10,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328610 to 164606. [2020-10-27 06:11:10,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164606 states. [2020-10-27 06:11:10,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164606 states to 164606 states and 241254 transitions. [2020-10-27 06:11:10,688 INFO L78 Accepts]: Start accepts. Automaton has 164606 states and 241254 transitions. Word has length 341 [2020-10-27 06:11:10,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:11:10,688 INFO L481 AbstractCegarLoop]: Abstraction has 164606 states and 241254 transitions. [2020-10-27 06:11:10,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 06:11:10,688 INFO L276 IsEmpty]: Start isEmpty. Operand 164606 states and 241254 transitions. [2020-10-27 06:11:10,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-27 06:11:10,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:11:10,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:11:10,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 06:11:10,818 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:11:10,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:11:10,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1667009186, now seen corresponding path program 1 times [2020-10-27 06:11:10,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:11:10,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808675710] [2020-10-27 06:11:10,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:11:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:11:10,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:10,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:11,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:11,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:11,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:11,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:11,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:11,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:11,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:11,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:11,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:11,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:11,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:11,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking...