/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:28:49,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:28:49,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:28:49,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:28:49,970 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:28:49,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:28:49,974 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:28:49,976 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:28:49,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:28:49,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:28:49,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:28:49,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:28:49,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:28:49,985 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:28:49,986 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:28:49,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:28:49,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:28:49,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:28:49,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:28:49,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:28:49,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:28:50,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:28:50,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:28:50,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:28:50,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:28:50,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:28:50,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:28:50,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:28:50,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:28:50,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:28:50,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:28:50,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:28:50,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:28:50,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:28:50,016 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:28:50,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:28:50,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:28:50,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:28:50,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:28:50,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:28:50,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:28:50,022 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 05:28:50,056 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:28:50,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:28:50,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:28:50,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:28:50,059 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:28:50,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:28:50,059 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:28:50,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:28:50,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:28:50,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:28:50,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:28:50,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:28:50,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:28:50,061 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:28:50,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:28:50,062 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:28:50,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:28:50,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:28:50,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:28:50,063 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:28:50,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:28:50,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:28:50,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:28:50,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:28:50,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:28:50,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:28:50,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:28:50,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:28:50,066 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:28:50,066 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:28:50,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:28:50,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:28:50,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:28:50,509 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:28:50,510 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:28:50,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-10-27 05:28:50,613 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58f5fede2/d517f45fce514745b77943a6bbda42af/FLAG8106f7897 [2020-10-27 05:28:51,381 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:28:51,382 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-10-27 05:28:51,399 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58f5fede2/d517f45fce514745b77943a6bbda42af/FLAG8106f7897 [2020-10-27 05:28:51,681 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58f5fede2/d517f45fce514745b77943a6bbda42af [2020-10-27 05:28:51,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:28:51,694 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:28:51,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:28:51,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:28:51,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:28:51,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:28:51" (1/1) ... [2020-10-27 05:28:51,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71a5f09b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:28:51, skipping insertion in model container [2020-10-27 05:28:51,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:28:51" (1/1) ... [2020-10-27 05:28:51,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:28:51,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:28:52,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:28:52,242 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:28:52,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:28:52,472 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:28:52,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:28:52 WrapperNode [2020-10-27 05:28:52,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:28:52,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:28:52,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:28:52,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:28:52,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:28:52" (1/1) ... [2020-10-27 05:28:52,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:28:52" (1/1) ... [2020-10-27 05:28:52,506 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:28:52" (1/1) ... [2020-10-27 05:28:52,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:28:52" (1/1) ... [2020-10-27 05:28:52,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:28:52" (1/1) ... [2020-10-27 05:28:52,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:28:52" (1/1) ... [2020-10-27 05:28:52,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:28:52" (1/1) ... [2020-10-27 05:28:52,562 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:28:52,563 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:28:52,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:28:52,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:28:52,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:28:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:28:52,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:28:52,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:28:52,652 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:28:52,653 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:28:52,654 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:28:52,655 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:28:52,655 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:28:52,655 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:28:52,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:28:52,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:28:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:28:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:28:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:28:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:28:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:28:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:28:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:28:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:28:52,660 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:28:52,660 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 05:28:52,661 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-27 05:28:52,661 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-27 05:28:52,661 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:28:52,661 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:28:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:28:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:28:52,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:28:52,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:28:52,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:28:52,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:28:52,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:28:53,863 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:28:53,864 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:28:53,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:28:53 BoogieIcfgContainer [2020-10-27 05:28:53,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:28:53,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:28:53,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:28:53,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:28:53,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:28:51" (1/3) ... [2020-10-27 05:28:53,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e23fa55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:28:53, skipping insertion in model container [2020-10-27 05:28:53,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:28:52" (2/3) ... [2020-10-27 05:28:53,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e23fa55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:28:53, skipping insertion in model container [2020-10-27 05:28:53,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:28:53" (3/3) ... [2020-10-27 05:28:53,877 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-10-27 05:28:53,890 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:28:53,896 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:28:53,912 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:28:53,944 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:28:53,944 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:28:53,944 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:28:53,944 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:28:53,945 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:28:53,945 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:28:53,945 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:28:53,945 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:28:53,970 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states. [2020-10-27 05:28:53,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-27 05:28:53,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:28:53,985 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] [2020-10-27 05:28:53,985 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:28:53,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:28:53,992 INFO L82 PathProgramCache]: Analyzing trace with hash 799248134, now seen corresponding path program 1 times [2020-10-27 05:28:54,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:28:54,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157131997] [2020-10-27 05:28:54,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:28:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:54,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:54,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:54,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:55,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:55,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:55,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:55,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:56,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:56,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:56,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:56,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:57,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:57,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:57,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:58,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:28:59,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:28:59,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 05:28:59,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:28:59,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 05:28:59,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:28:59,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:28:59,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:28:59,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 05:28:59,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:28:59,901 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:28:59,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:28:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:28:59,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:00,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:00,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:29:00,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:29:00,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 05:29:00,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:00,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:29:00,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:29:00,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:29:00,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:00,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:29:00,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157131997] [2020-10-27 05:29:00,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:29:00,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:29:00,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484765325] [2020-10-27 05:29:00,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:29:00,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:29:00,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:29:00,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:29:00,134 INFO L87 Difference]: Start difference. First operand 211 states. Second operand 6 states. [2020-10-27 05:29:00,602 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:29:02,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:29:02,165 INFO L93 Difference]: Finished difference Result 358 states and 598 transitions. [2020-10-27 05:29:02,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:29:02,167 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2020-10-27 05:29:02,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:29:02,179 INFO L225 Difference]: With dead ends: 358 [2020-10-27 05:29:02,180 INFO L226 Difference]: Without dead ends: 204 [2020-10-27 05:29:02,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:29:02,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-27 05:29:02,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2020-10-27 05:29:02,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-27 05:29:02,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 274 transitions. [2020-10-27 05:29:02,254 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 274 transitions. Word has length 113 [2020-10-27 05:29:02,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:29:02,255 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 274 transitions. [2020-10-27 05:29:02,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:29:02,256 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 274 transitions. [2020-10-27 05:29:02,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-27 05:29:02,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:29:02,263 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] [2020-10-27 05:29:02,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:29:02,264 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:29:02,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:29:02,267 INFO L82 PathProgramCache]: Analyzing trace with hash -414014751, now seen corresponding path program 1 times [2020-10-27 05:29:02,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:29:02,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737596220] [2020-10-27 05:29:02,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:29:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:02,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:02,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:02,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:02,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:02,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:02,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:03,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:04,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:04,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:05,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:05,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:05,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:05,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:07,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:07,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 05:29:07,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:29:07,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 05:29:07,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:07,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:29:07,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:29:07,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 05:29:07,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:29:07,968 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:29:07,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:29:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:08,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:08,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:08,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:29:08,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:29:08,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 05:29:08,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:08,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:29:08,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:29:08,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:29:08,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:08,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:29:08,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737596220] [2020-10-27 05:29:08,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:29:08,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:29:08,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177478903] [2020-10-27 05:29:08,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:29:08,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:29:08,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:29:08,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:29:08,103 INFO L87 Difference]: Start difference. First operand 204 states and 274 transitions. Second operand 6 states. [2020-10-27 05:29:08,659 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:29:09,794 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-27 05:29:10,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:29:10,286 INFO L93 Difference]: Finished difference Result 445 states and 640 transitions. [2020-10-27 05:29:10,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:29:10,287 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2020-10-27 05:29:10,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:29:10,290 INFO L225 Difference]: With dead ends: 445 [2020-10-27 05:29:10,291 INFO L226 Difference]: Without dead ends: 306 [2020-10-27 05:29:10,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:29:10,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-27 05:29:10,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 303. [2020-10-27 05:29:10,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-10-27 05:29:10,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 429 transitions. [2020-10-27 05:29:10,354 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 429 transitions. Word has length 114 [2020-10-27 05:29:10,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:29:10,357 INFO L481 AbstractCegarLoop]: Abstraction has 303 states and 429 transitions. [2020-10-27 05:29:10,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:29:10,358 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 429 transitions. [2020-10-27 05:29:10,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-27 05:29:10,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:29:10,366 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] [2020-10-27 05:29:10,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:29:10,367 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:29:10,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:29:10,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1692262987, now seen corresponding path program 1 times [2020-10-27 05:29:10,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:29:10,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123193861] [2020-10-27 05:29:10,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:29:10,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:10,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:10,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:10,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:10,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:10,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:10,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:11,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:11,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:11,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:15,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:15,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:15,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:15,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:15,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 05:29:15,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:29:15,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 05:29:15,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:15,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:29:15,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:29:15,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 05:29:15,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:29:15,910 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:29:15,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:29:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:15,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:15,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:15,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:29:15,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:29:15,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 05:29:15,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:15,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:29:15,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:29:15,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:29:15,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:15,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:29:16,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123193861] [2020-10-27 05:29:16,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:29:16,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:29:16,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267639841] [2020-10-27 05:29:16,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:29:16,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:29:16,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:29:16,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:29:16,009 INFO L87 Difference]: Start difference. First operand 303 states and 429 transitions. Second operand 6 states. [2020-10-27 05:29:16,457 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-27 05:29:17,574 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:29:18,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:29:18,042 INFO L93 Difference]: Finished difference Result 750 states and 1117 transitions. [2020-10-27 05:29:18,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:29:18,043 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2020-10-27 05:29:18,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:29:18,047 INFO L225 Difference]: With dead ends: 750 [2020-10-27 05:29:18,048 INFO L226 Difference]: Without dead ends: 508 [2020-10-27 05:29:18,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:29:18,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-10-27 05:29:18,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 505. [2020-10-27 05:29:18,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2020-10-27 05:29:18,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 745 transitions. [2020-10-27 05:29:18,115 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 745 transitions. Word has length 115 [2020-10-27 05:29:18,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:29:18,117 INFO L481 AbstractCegarLoop]: Abstraction has 505 states and 745 transitions. [2020-10-27 05:29:18,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:29:18,117 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 745 transitions. [2020-10-27 05:29:18,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-27 05:29:18,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:29:18,124 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] [2020-10-27 05:29:18,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:29:18,124 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:29:18,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:29:18,125 INFO L82 PathProgramCache]: Analyzing trace with hash -877023056, now seen corresponding path program 1 times [2020-10-27 05:29:18,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:29:18,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597396651] [2020-10-27 05:29:18,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:29:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:18,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:18,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:18,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:18,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:18,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:18,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:18,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:19,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:19,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:20,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:20,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:21,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:23,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:23,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 05:29:23,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:29:23,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 05:29:23,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:23,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:29:23,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:29:23,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 05:29:23,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:23,646 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:29:23,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:29:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:23,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:23,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:23,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:29:23,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:29:23,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 05:29:23,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:23,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:29:23,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:29:23,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:29:23,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:23,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:29:23,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597396651] [2020-10-27 05:29:23,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:29:23,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:29:23,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898954497] [2020-10-27 05:29:23,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:29:23,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:29:23,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:29:23,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:29:23,758 INFO L87 Difference]: Start difference. First operand 505 states and 745 transitions. Second operand 6 states. [2020-10-27 05:29:24,215 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:29:25,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:29:25,210 INFO L93 Difference]: Finished difference Result 937 states and 1416 transitions. [2020-10-27 05:29:25,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:29:25,211 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2020-10-27 05:29:25,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:29:25,215 INFO L225 Difference]: With dead ends: 937 [2020-10-27 05:29:25,215 INFO L226 Difference]: Without dead ends: 505 [2020-10-27 05:29:25,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:29:25,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2020-10-27 05:29:25,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 505. [2020-10-27 05:29:25,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2020-10-27 05:29:25,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 740 transitions. [2020-10-27 05:29:25,258 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 740 transitions. Word has length 116 [2020-10-27 05:29:25,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:29:25,259 INFO L481 AbstractCegarLoop]: Abstraction has 505 states and 740 transitions. [2020-10-27 05:29:25,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:29:25,259 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 740 transitions. [2020-10-27 05:29:25,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-27 05:29:25,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:29:25,261 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] [2020-10-27 05:29:25,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:29:25,262 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:29:25,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:29:25,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1345584344, now seen corresponding path program 1 times [2020-10-27 05:29:25,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:29:25,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46273749] [2020-10-27 05:29:25,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:29:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:25,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:25,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:25,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:25,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:25,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:25,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:26,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:26,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:26,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:30,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:30,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 05:29:30,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:29:30,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 05:29:30,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:30,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:29:30,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:29:30,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 05:29:30,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:30,910 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:29:30,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:29:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:30,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:30,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:30,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:29:30,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:29:30,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 05:29:30,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:30,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:29:30,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:29:30,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:29:30,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:31,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:29:31,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46273749] [2020-10-27 05:29:31,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:29:31,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:29:31,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657711525] [2020-10-27 05:29:31,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:29:31,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:29:31,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:29:31,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:29:31,008 INFO L87 Difference]: Start difference. First operand 505 states and 740 transitions. Second operand 6 states. [2020-10-27 05:29:31,474 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:29:32,527 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-27 05:29:32,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:29:32,993 INFO L93 Difference]: Finished difference Result 1244 states and 1883 transitions. [2020-10-27 05:29:32,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:29:32,994 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-10-27 05:29:32,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:29:32,999 INFO L225 Difference]: With dead ends: 1244 [2020-10-27 05:29:32,999 INFO L226 Difference]: Without dead ends: 820 [2020-10-27 05:29:33,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:29:33,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2020-10-27 05:29:33,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 817. [2020-10-27 05:29:33,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 817 states. [2020-10-27 05:29:33,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1219 transitions. [2020-10-27 05:29:33,067 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1219 transitions. Word has length 117 [2020-10-27 05:29:33,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:29:33,068 INFO L481 AbstractCegarLoop]: Abstraction has 817 states and 1219 transitions. [2020-10-27 05:29:33,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:29:33,069 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1219 transitions. [2020-10-27 05:29:33,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-27 05:29:33,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:29:33,071 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] [2020-10-27 05:29:33,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:29:33,071 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:29:33,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:29:33,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1083175536, now seen corresponding path program 1 times [2020-10-27 05:29:33,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:29:33,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403695370] [2020-10-27 05:29:33,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:29:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:33,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:33,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:33,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:33,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:33,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:33,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:34,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:34,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:34,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:35,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:38,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:38,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 05:29:38,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:29:38,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 05:29:38,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:38,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:29:38,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:29:38,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 05:29:38,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:38,801 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:29:38,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:29:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:38,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:38,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:38,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:29:38,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:29:38,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 05:29:38,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:38,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:29:38,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:29:38,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:29:38,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:38,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:29:38,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403695370] [2020-10-27 05:29:38,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:29:38,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:29:38,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969280223] [2020-10-27 05:29:38,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:29:38,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:29:38,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:29:38,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:29:38,923 INFO L87 Difference]: Start difference. First operand 817 states and 1219 transitions. Second operand 11 states. [2020-10-27 05:29:39,481 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-27 05:29:41,207 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:29:41,682 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-27 05:29:42,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:29:42,465 INFO L93 Difference]: Finished difference Result 1807 states and 2747 transitions. [2020-10-27 05:29:42,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 05:29:42,466 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 118 [2020-10-27 05:29:42,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:29:42,474 INFO L225 Difference]: With dead ends: 1807 [2020-10-27 05:29:42,474 INFO L226 Difference]: Without dead ends: 1140 [2020-10-27 05:29:42,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2020-10-27 05:29:42,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2020-10-27 05:29:42,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 817. [2020-10-27 05:29:42,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 817 states. [2020-10-27 05:29:42,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1217 transitions. [2020-10-27 05:29:42,598 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1217 transitions. Word has length 118 [2020-10-27 05:29:42,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:29:42,598 INFO L481 AbstractCegarLoop]: Abstraction has 817 states and 1217 transitions. [2020-10-27 05:29:42,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:29:42,599 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1217 transitions. [2020-10-27 05:29:42,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 05:29:42,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:29:42,604 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] [2020-10-27 05:29:42,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:29:42,604 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:29:42,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:29:42,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1622465431, now seen corresponding path program 1 times [2020-10-27 05:29:42,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:29:42,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683208202] [2020-10-27 05:29:42,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:29:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:42,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:42,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:42,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:42,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:42,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:43,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:45,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:45,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:45,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:45,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:46,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:47,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:47,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 05:29:47,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 05:29:47,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 05:29:47,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:47,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:29:47,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:29:47,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 05:29:47,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:48,137 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:29:48,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:29:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:48,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:48,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:48,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:29:48,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:29:48,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 05:29:48,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:48,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:29:48,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:29:48,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:29:48,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:48,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:29:48,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683208202] [2020-10-27 05:29:48,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:29:48,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:29:48,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721870657] [2020-10-27 05:29:48,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:29:48,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:29:48,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:29:48,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:29:48,235 INFO L87 Difference]: Start difference. First operand 817 states and 1217 transitions. Second operand 6 states. [2020-10-27 05:29:48,701 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:29:49,804 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-27 05:29:50,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:29:50,363 INFO L93 Difference]: Finished difference Result 2200 states and 3346 transitions. [2020-10-27 05:29:50,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:29:50,363 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2020-10-27 05:29:50,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:29:50,372 INFO L225 Difference]: With dead ends: 2200 [2020-10-27 05:29:50,372 INFO L226 Difference]: Without dead ends: 1460 [2020-10-27 05:29:50,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:29:50,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2020-10-27 05:29:50,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1457. [2020-10-27 05:29:50,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2020-10-27 05:29:50,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2196 transitions. [2020-10-27 05:29:50,513 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2196 transitions. Word has length 119 [2020-10-27 05:29:50,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:29:50,513 INFO L481 AbstractCegarLoop]: Abstraction has 1457 states and 2196 transitions. [2020-10-27 05:29:50,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:29:50,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2196 transitions. [2020-10-27 05:29:50,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 05:29:50,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:29:50,516 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] [2020-10-27 05:29:50,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:29:50,516 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:29:50,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:29:50,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1017161888, now seen corresponding path program 1 times [2020-10-27 05:29:50,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:29:50,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439334022] [2020-10-27 05:29:50,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:29:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:50,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:50,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:50,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:50,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:50,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:51,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:51,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:51,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:51,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:52,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:52,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:53,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:53,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:54,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:54,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:54,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:55,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:55,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 05:29:55,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 05:29:55,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 05:29:55,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:55,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:29:55,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:29:55,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 05:29:55,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:55,981 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:29:55,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:29:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:55,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:56,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:29:56,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:29:56,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:29:56,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 05:29:56,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:29:56,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:29:56,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:29:56,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:29:56,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:29:56,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:29:56,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439334022] [2020-10-27 05:29:56,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:29:56,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:29:56,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589123774] [2020-10-27 05:29:56,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:29:56,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:29:56,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:29:56,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:29:56,061 INFO L87 Difference]: Start difference. First operand 1457 states and 2196 transitions. Second operand 6 states. [2020-10-27 05:29:56,507 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:29:57,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:29:57,622 INFO L93 Difference]: Finished difference Result 2829 states and 4306 transitions. [2020-10-27 05:29:57,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:29:57,623 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2020-10-27 05:29:57,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:29:57,631 INFO L225 Difference]: With dead ends: 2829 [2020-10-27 05:29:57,632 INFO L226 Difference]: Without dead ends: 1457 [2020-10-27 05:29:57,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:29:57,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2020-10-27 05:29:57,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1457. [2020-10-27 05:29:57,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2020-10-27 05:29:57,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2179 transitions. [2020-10-27 05:29:57,774 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2179 transitions. Word has length 120 [2020-10-27 05:29:57,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:29:57,775 INFO L481 AbstractCegarLoop]: Abstraction has 1457 states and 2179 transitions. [2020-10-27 05:29:57,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:29:57,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2179 transitions. [2020-10-27 05:29:57,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 05:29:57,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:29:57,777 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] [2020-10-27 05:29:57,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:29:57,777 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:29:57,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:29:57,778 INFO L82 PathProgramCache]: Analyzing trace with hash 337732523, now seen corresponding path program 1 times [2020-10-27 05:29:57,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:29:57,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130962417] [2020-10-27 05:29:57,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:29:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:29:57,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:57,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:57,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:58,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:58,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:58,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:58,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:59,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:59,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:59,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:29:59,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:00,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:00,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:01,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:01,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:01,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:02,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:02,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:02,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:30:02,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 05:30:02,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-27 05:30:02,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 05:30:02,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:30:02,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:30:02,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:30:02,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-27 05:30:02,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:30:03,387 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:30:03,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:30:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:30:03,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:03,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:30:03,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:30:03,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:30:03,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 05:30:03,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:30:03,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:30:03,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:30:03,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:30:03,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:30:03,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:30:03,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130962417] [2020-10-27 05:30:03,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:30:03,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:30:03,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984921335] [2020-10-27 05:30:03,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:30:03,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:30:03,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:30:03,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:30:03,542 INFO L87 Difference]: Start difference. First operand 1457 states and 2179 transitions. Second operand 11 states. [2020-10-27 05:30:04,083 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-27 05:30:05,715 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:30:06,151 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-27 05:30:06,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:30:06,896 INFO L93 Difference]: Finished difference Result 4063 states and 6143 transitions. [2020-10-27 05:30:06,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 05:30:06,896 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 121 [2020-10-27 05:30:06,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:30:06,911 INFO L225 Difference]: With dead ends: 4063 [2020-10-27 05:30:06,911 INFO L226 Difference]: Without dead ends: 2800 [2020-10-27 05:30:06,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2020-10-27 05:30:06,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2800 states. [2020-10-27 05:30:07,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2800 to 1457. [2020-10-27 05:30:07,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2020-10-27 05:30:07,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2175 transitions. [2020-10-27 05:30:07,117 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2175 transitions. Word has length 121 [2020-10-27 05:30:07,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:30:07,118 INFO L481 AbstractCegarLoop]: Abstraction has 1457 states and 2175 transitions. [2020-10-27 05:30:07,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:30:07,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2175 transitions. [2020-10-27 05:30:07,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 05:30:07,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:30:07,120 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] [2020-10-27 05:30:07,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:30:07,120 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:30:07,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:30:07,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1438800868, now seen corresponding path program 1 times [2020-10-27 05:30:07,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:30:07,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119192609] [2020-10-27 05:30:07,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:30:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:30:07,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:07,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:07,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:07,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:07,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:08,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:08,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:08,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:08,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:09,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:10,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:10,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:12,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:30:12,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 05:30:12,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:30:12,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 05:30:12,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:30:12,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:30:12,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:30:12,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 05:30:12,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:30:12,720 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:30:12,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:30:12,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:30:12,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:12,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:30:12,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:30:12,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:30:12,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 05:30:12,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:30:12,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:30:12,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:30:12,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:30:12,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:30:12,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:30:12,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119192609] [2020-10-27 05:30:12,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:30:12,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 05:30:12,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658024198] [2020-10-27 05:30:12,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:30:12,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:30:12,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:30:12,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:30:12,817 INFO L87 Difference]: Start difference. First operand 1457 states and 2175 transitions. Second operand 10 states. [2020-10-27 05:30:13,340 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2020-10-27 05:30:14,856 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-27 05:30:15,288 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-27 05:30:16,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:30:16,030 INFO L93 Difference]: Finished difference Result 3990 states and 6048 transitions. [2020-10-27 05:30:16,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 05:30:16,031 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 122 [2020-10-27 05:30:16,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:30:16,041 INFO L225 Difference]: With dead ends: 3990 [2020-10-27 05:30:16,042 INFO L226 Difference]: Without dead ends: 2692 [2020-10-27 05:30:16,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-10-27 05:30:16,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2692 states. [2020-10-27 05:30:16,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 1457. [2020-10-27 05:30:16,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2020-10-27 05:30:16,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2174 transitions. [2020-10-27 05:30:16,259 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2174 transitions. Word has length 122 [2020-10-27 05:30:16,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:30:16,259 INFO L481 AbstractCegarLoop]: Abstraction has 1457 states and 2174 transitions. [2020-10-27 05:30:16,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:30:16,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2174 transitions. [2020-10-27 05:30:16,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-27 05:30:16,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:30:16,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:30:16,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:30:16,262 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:30:16,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:30:16,262 INFO L82 PathProgramCache]: Analyzing trace with hash 323036535, now seen corresponding path program 1 times [2020-10-27 05:30:16,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:30:16,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398347387] [2020-10-27 05:30:16,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:30:16,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:30:16,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:16,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:16,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:16,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:16,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:16,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:17,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:17,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:17,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:18,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:21,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:30:21,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 05:30:21,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:30:21,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 05:30:21,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:30:21,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 05:30:21,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:30:21,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 05:30:21,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:30:22,058 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:30:22,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:30:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:30:22,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:22,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:30:22,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:30:22,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:30:22,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 05:30:22,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:30:22,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:30:22,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:30:22,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:30:22,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:30:22,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:30:22,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398347387] [2020-10-27 05:30:22,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:30:22,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 05:30:22,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222491293] [2020-10-27 05:30:22,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 05:30:22,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:30:22,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 05:30:22,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-27 05:30:22,141 INFO L87 Difference]: Start difference. First operand 1457 states and 2174 transitions. Second operand 13 states. [2020-10-27 05:30:22,695 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-27 05:30:23,577 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 35 [2020-10-27 05:30:25,685 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 05:30:26,154 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-27 05:30:31,338 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-27 05:30:31,796 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-27 05:30:32,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:30:32,447 INFO L93 Difference]: Finished difference Result 13735 states and 20660 transitions. [2020-10-27 05:30:32,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 05:30:32,448 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 123 [2020-10-27 05:30:32,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:30:32,502 INFO L225 Difference]: With dead ends: 13735 [2020-10-27 05:30:32,503 INFO L226 Difference]: Without dead ends: 12404 [2020-10-27 05:30:32,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=394, Invalid=1412, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 05:30:32,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12404 states. [2020-10-27 05:30:32,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12404 to 1463. [2020-10-27 05:30:32,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1463 states. [2020-10-27 05:30:32,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 2178 transitions. [2020-10-27 05:30:32,941 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 2178 transitions. Word has length 123 [2020-10-27 05:30:32,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:30:32,941 INFO L481 AbstractCegarLoop]: Abstraction has 1463 states and 2178 transitions. [2020-10-27 05:30:32,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 05:30:32,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 2178 transitions. [2020-10-27 05:30:32,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-27 05:30:32,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:30:32,944 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] [2020-10-27 05:30:32,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 05:30:32,944 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:30:32,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:30:32,945 INFO L82 PathProgramCache]: Analyzing trace with hash -627542465, now seen corresponding path program 1 times [2020-10-27 05:30:32,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:30:32,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691239528] [2020-10-27 05:30:32,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:30:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:30:33,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:33,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:33,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:33,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:34,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:34,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:34,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:35,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:37,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:38,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:30:38,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 05:30:38,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:30:38,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 05:30:38,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:30:38,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:30:38,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:30:38,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-27 05:30:38,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:30:38,555 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:30:38,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:30:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:30:38,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:38,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:30:38,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:30:38,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:30:38,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 05:30:38,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:30:38,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:30:38,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:30:38,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:30:38,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:30:38,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:30:38,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691239528] [2020-10-27 05:30:38,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:30:38,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:30:38,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897937529] [2020-10-27 05:30:38,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:30:38,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:30:38,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:30:38,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:30:38,636 INFO L87 Difference]: Start difference. First operand 1463 states and 2178 transitions. Second operand 11 states. [2020-10-27 05:30:39,153 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-10-27 05:30:40,813 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-27 05:30:41,258 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-27 05:30:43,110 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:30:43,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:30:43,335 INFO L93 Difference]: Finished difference Result 4612 states and 6986 transitions. [2020-10-27 05:30:43,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 05:30:43,335 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 124 [2020-10-27 05:30:43,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:30:43,348 INFO L225 Difference]: With dead ends: 4612 [2020-10-27 05:30:43,349 INFO L226 Difference]: Without dead ends: 3329 [2020-10-27 05:30:43,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=184, Invalid=628, Unknown=0, NotChecked=0, Total=812 [2020-10-27 05:30:43,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3329 states. [2020-10-27 05:30:43,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3329 to 1457. [2020-10-27 05:30:43,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2020-10-27 05:30:43,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2170 transitions. [2020-10-27 05:30:43,661 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2170 transitions. Word has length 124 [2020-10-27 05:30:43,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:30:43,661 INFO L481 AbstractCegarLoop]: Abstraction has 1457 states and 2170 transitions. [2020-10-27 05:30:43,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:30:43,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2170 transitions. [2020-10-27 05:30:43,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-27 05:30:43,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:30:43,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:30:43,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 05:30:43,664 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:30:43,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:30:43,664 INFO L82 PathProgramCache]: Analyzing trace with hash 659526232, now seen corresponding path program 1 times [2020-10-27 05:30:43,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:30:43,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026660616] [2020-10-27 05:30:43,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:30:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:30:43,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:43,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:43,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:44,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:44,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:44,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:44,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:48,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:48,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:48,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:48,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:30:48,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 05:30:48,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:30:48,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 05:30:48,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:30:48,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 05:30:48,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:30:48,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 05:30:48,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:30:49,369 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:30:49,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:30:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:30:49,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:30:49,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:30:49,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:30:49,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:30:49,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 05:30:49,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:30:49,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:30:49,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:30:49,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:30:49,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:30:49,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:30:49,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026660616] [2020-10-27 05:30:49,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:30:49,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 05:30:49,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951192463] [2020-10-27 05:30:49,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 05:30:49,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:30:49,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 05:30:49,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-27 05:30:49,448 INFO L87 Difference]: Start difference. First operand 1457 states and 2170 transitions. Second operand 13 states. [2020-10-27 05:30:50,470 WARN L193 SmtUtils]: Spent 880.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 224 [2020-10-27 05:30:51,378 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-10-27 05:30:53,871 WARN L193 SmtUtils]: Spent 868.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 228 [2020-10-27 05:30:54,812 WARN L193 SmtUtils]: Spent 891.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 227 [2020-10-27 05:31:03,752 WARN L193 SmtUtils]: Spent 859.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 223 [2020-10-27 05:31:04,715 WARN L193 SmtUtils]: Spent 911.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 222 [2020-10-27 05:31:06,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:31:06,498 INFO L93 Difference]: Finished difference Result 24165 states and 36026 transitions. [2020-10-27 05:31:06,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-27 05:31:06,499 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 124 [2020-10-27 05:31:06,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:31:06,552 INFO L225 Difference]: With dead ends: 24165 [2020-10-27 05:31:06,553 INFO L226 Difference]: Without dead ends: 22854 [2020-10-27 05:31:06,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1208 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=702, Invalid=2838, Unknown=0, NotChecked=0, Total=3540 [2020-10-27 05:31:06,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22854 states. [2020-10-27 05:31:07,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22854 to 1469. [2020-10-27 05:31:07,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1469 states. [2020-10-27 05:31:07,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 2182 transitions. [2020-10-27 05:31:07,221 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 2182 transitions. Word has length 124 [2020-10-27 05:31:07,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:31:07,221 INFO L481 AbstractCegarLoop]: Abstraction has 1469 states and 2182 transitions. [2020-10-27 05:31:07,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 05:31:07,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 2182 transitions. [2020-10-27 05:31:07,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-27 05:31:07,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:31:07,223 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] [2020-10-27 05:31:07,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 05:31:07,223 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:31:07,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:31:07,223 INFO L82 PathProgramCache]: Analyzing trace with hash 353357069, now seen corresponding path program 1 times [2020-10-27 05:31:07,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:31:07,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871040382] [2020-10-27 05:31:07,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:31:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:07,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:07,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:07,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:07,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:07,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:08,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:08,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:09,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:09,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:12,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:12,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 05:31:12,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:31:12,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 05:31:12,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:12,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:31:12,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:31:12,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-27 05:31:12,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:31:12,830 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:31:12,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:31:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:12,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:12,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:12,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:31:12,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:31:12,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 05:31:12,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:12,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:31:12,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:31:12,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:31:12,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:31:12,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:31:12,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871040382] [2020-10-27 05:31:12,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:31:12,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:31:12,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098129290] [2020-10-27 05:31:12,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:31:12,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:31:12,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:31:12,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:31:12,899 INFO L87 Difference]: Start difference. First operand 1469 states and 2182 transitions. Second operand 11 states. [2020-10-27 05:31:13,394 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-10-27 05:31:15,023 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-27 05:31:15,456 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-27 05:31:17,835 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:31:18,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:31:18,906 INFO L93 Difference]: Finished difference Result 7473 states and 11311 transitions. [2020-10-27 05:31:18,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 05:31:18,907 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 125 [2020-10-27 05:31:18,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:31:18,924 INFO L225 Difference]: With dead ends: 7473 [2020-10-27 05:31:18,924 INFO L226 Difference]: Without dead ends: 6238 [2020-10-27 05:31:18,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=216, Invalid=776, Unknown=0, NotChecked=0, Total=992 [2020-10-27 05:31:18,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6238 states. [2020-10-27 05:31:19,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6238 to 1517. [2020-10-27 05:31:19,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1517 states. [2020-10-27 05:31:19,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 2246 transitions. [2020-10-27 05:31:19,450 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 2246 transitions. Word has length 125 [2020-10-27 05:31:19,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:31:19,450 INFO L481 AbstractCegarLoop]: Abstraction has 1517 states and 2246 transitions. [2020-10-27 05:31:19,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:31:19,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 2246 transitions. [2020-10-27 05:31:19,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-27 05:31:19,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:31:19,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:31:19,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 05:31:19,453 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:31:19,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:31:19,453 INFO L82 PathProgramCache]: Analyzing trace with hash 580891043, now seen corresponding path program 1 times [2020-10-27 05:31:19,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:31:19,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948075963] [2020-10-27 05:31:19,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:31:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:19,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:19,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:19,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:19,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:19,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:20,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:20,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:24,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:24,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 05:31:24,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:31:24,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 05:31:24,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:24,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 05:31:24,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:31:24,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 05:31:24,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:31:25,143 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:31:25,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:31:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:25,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:25,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:25,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:31:25,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:31:25,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 05:31:25,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:25,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:31:25,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:31:25,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:31:25,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:31:25,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:31:25,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948075963] [2020-10-27 05:31:25,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:31:25,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 05:31:25,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548089286] [2020-10-27 05:31:25,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 05:31:25,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:31:25,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 05:31:25,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-27 05:31:25,242 INFO L87 Difference]: Start difference. First operand 1517 states and 2246 transitions. Second operand 13 states. [2020-10-27 05:31:25,786 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2020-10-27 05:31:26,831 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2020-10-27 05:31:28,436 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-27 05:31:28,945 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-27 05:31:33,185 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-10-27 05:31:33,634 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:31:35,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:31:35,439 INFO L93 Difference]: Finished difference Result 10869 states and 16306 transitions. [2020-10-27 05:31:35,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 05:31:35,440 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 126 [2020-10-27 05:31:35,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:31:35,463 INFO L225 Difference]: With dead ends: 10869 [2020-10-27 05:31:35,464 INFO L226 Difference]: Without dead ends: 9618 [2020-10-27 05:31:35,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=370, Invalid=1352, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 05:31:35,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9618 states. [2020-10-27 05:31:36,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9618 to 1517. [2020-10-27 05:31:36,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1517 states. [2020-10-27 05:31:36,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 2242 transitions. [2020-10-27 05:31:36,013 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 2242 transitions. Word has length 126 [2020-10-27 05:31:36,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:31:36,013 INFO L481 AbstractCegarLoop]: Abstraction has 1517 states and 2242 transitions. [2020-10-27 05:31:36,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 05:31:36,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 2242 transitions. [2020-10-27 05:31:36,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 05:31:36,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:31:36,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:31:36,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 05:31:36,015 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:31:36,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:31:36,016 INFO L82 PathProgramCache]: Analyzing trace with hash -2123443680, now seen corresponding path program 1 times [2020-10-27 05:31:36,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:31:36,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941862407] [2020-10-27 05:31:36,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:31:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:36,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:36,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:36,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:36,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:36,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:37,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:37,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:38,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:40,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:40,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:40,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:41,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:41,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 05:31:41,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 05:31:41,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 05:31:41,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:41,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:31:41,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:31:41,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 05:31:41,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:31:41,661 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:31:41,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:31:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:41,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:41,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:41,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:31:41,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:31:41,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 05:31:41,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:41,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:31:41,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:31:41,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:31:41,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:31:41,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:31:41,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941862407] [2020-10-27 05:31:41,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:31:41,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:31:41,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666226400] [2020-10-27 05:31:41,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:31:41,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:31:41,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:31:41,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:31:41,735 INFO L87 Difference]: Start difference. First operand 1517 states and 2242 transitions. Second operand 11 states. [2020-10-27 05:31:42,253 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-27 05:31:43,990 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-27 05:31:44,449 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:31:46,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:31:46,037 INFO L93 Difference]: Finished difference Result 3407 states and 5118 transitions. [2020-10-27 05:31:46,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 05:31:46,038 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 127 [2020-10-27 05:31:46,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:31:46,041 INFO L225 Difference]: With dead ends: 3407 [2020-10-27 05:31:46,041 INFO L226 Difference]: Without dead ends: 2156 [2020-10-27 05:31:46,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2020-10-27 05:31:46,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2156 states. [2020-10-27 05:31:46,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2156 to 1517. [2020-10-27 05:31:46,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1517 states. [2020-10-27 05:31:46,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 2238 transitions. [2020-10-27 05:31:46,488 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 2238 transitions. Word has length 127 [2020-10-27 05:31:46,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:31:46,489 INFO L481 AbstractCegarLoop]: Abstraction has 1517 states and 2238 transitions. [2020-10-27 05:31:46,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:31:46,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 2238 transitions. [2020-10-27 05:31:46,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 05:31:46,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:31:46,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:31:46,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 05:31:46,491 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:31:46,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:31:46,492 INFO L82 PathProgramCache]: Analyzing trace with hash 126719876, now seen corresponding path program 1 times [2020-10-27 05:31:46,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:31:46,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486649232] [2020-10-27 05:31:46,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:31:46,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:46,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:46,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:46,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:46,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:47,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:47,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 05:31:47,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:31:47,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 950 [2020-10-27 05:31:47,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:47,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:31:47,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 05:31:47,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 05:31:47,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:31:47,961 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:31:47,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:31:47,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:31:47,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:31:47,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:31:47,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:31:47,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:31:47,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 05:31:47,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:31:47,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:31:47,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:31:47,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:31:47,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:31:48,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:31:48,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486649232] [2020-10-27 05:31:48,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:31:48,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:31:48,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090191375] [2020-10-27 05:31:48,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:31:48,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:31:48,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:31:48,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:31:48,041 INFO L87 Difference]: Start difference. First operand 1517 states and 2238 transitions. Second operand 10 states. [2020-10-27 05:31:48,562 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2020-10-27 05:31:50,134 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-27 05:31:50,602 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-27 05:31:51,090 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-10-27 05:31:51,572 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-27 05:31:52,004 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:31:52,442 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-27 05:31:53,152 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-27 05:31:53,666 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-27 05:31:54,229 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-10-27 05:31:54,720 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-27 05:31:55,200 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:31:55,646 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-27 05:32:01,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:32:01,644 INFO L93 Difference]: Finished difference Result 19027 states and 28989 transitions. [2020-10-27 05:32:01,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 05:32:01,644 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 127 [2020-10-27 05:32:01,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:32:01,670 INFO L225 Difference]: With dead ends: 19027 [2020-10-27 05:32:01,670 INFO L226 Difference]: Without dead ends: 17792 [2020-10-27 05:32:01,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=322, Invalid=800, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 05:32:01,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17792 states. [2020-10-27 05:32:02,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17792 to 2829. [2020-10-27 05:32:02,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2829 states. [2020-10-27 05:32:02,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2829 states to 2829 states and 4201 transitions. [2020-10-27 05:32:02,713 INFO L78 Accepts]: Start accepts. Automaton has 2829 states and 4201 transitions. Word has length 127 [2020-10-27 05:32:02,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:32:02,713 INFO L481 AbstractCegarLoop]: Abstraction has 2829 states and 4201 transitions. [2020-10-27 05:32:02,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:32:02,713 INFO L276 IsEmpty]: Start isEmpty. Operand 2829 states and 4201 transitions. [2020-10-27 05:32:02,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-27 05:32:02,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:32:02,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:32:02,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 05:32:02,715 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:32:02,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:32:02,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1797225290, now seen corresponding path program 1 times [2020-10-27 05:32:02,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:32:02,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694093809] [2020-10-27 05:32:02,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:32:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:02,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:02,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:02,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:03,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:07,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:07,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 05:32:07,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:32:07,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 05:32:07,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:07,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:32:07,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:32:07,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 05:32:07,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:08,482 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:32:08,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:32:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:08,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:08,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:08,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:32:08,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:32:08,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 05:32:08,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:08,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:32:08,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:32:08,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:32:08,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:08,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:32:08,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694093809] [2020-10-27 05:32:08,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:32:08,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:32:08,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088717404] [2020-10-27 05:32:08,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:32:08,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:32:08,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:32:08,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:32:08,559 INFO L87 Difference]: Start difference. First operand 2829 states and 4201 transitions. Second operand 10 states. [2020-10-27 05:32:09,092 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-10-27 05:32:11,101 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 05:32:11,580 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2020-10-27 05:32:13,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:32:13,634 INFO L93 Difference]: Finished difference Result 6619 states and 9936 transitions. [2020-10-27 05:32:13,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:32:13,635 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 128 [2020-10-27 05:32:13,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:32:13,639 INFO L225 Difference]: With dead ends: 6619 [2020-10-27 05:32:13,639 INFO L226 Difference]: Without dead ends: 4064 [2020-10-27 05:32:13,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2020-10-27 05:32:13,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4064 states. [2020-10-27 05:32:14,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4064 to 2821. [2020-10-27 05:32:14,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2821 states. [2020-10-27 05:32:14,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2821 states to 2821 states and 4188 transitions. [2020-10-27 05:32:14,572 INFO L78 Accepts]: Start accepts. Automaton has 2821 states and 4188 transitions. Word has length 128 [2020-10-27 05:32:14,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:32:14,573 INFO L481 AbstractCegarLoop]: Abstraction has 2821 states and 4188 transitions. [2020-10-27 05:32:14,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:32:14,573 INFO L276 IsEmpty]: Start isEmpty. Operand 2821 states and 4188 transitions. [2020-10-27 05:32:14,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-27 05:32:14,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:32:14,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:32:14,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 05:32:14,574 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:32:14,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:32:14,575 INFO L82 PathProgramCache]: Analyzing trace with hash -2103277913, now seen corresponding path program 1 times [2020-10-27 05:32:14,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:32:14,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034821381] [2020-10-27 05:32:14,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:32:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:14,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:14,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:14,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:15,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:19,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:19,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 05:32:19,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:32:19,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 05:32:19,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:19,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:32:19,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:32:19,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 05:32:19,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:19,904 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2020-10-27 05:32:20,370 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-27 05:32:20,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:32:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:20,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:20,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:32:20,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:32:20,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:32:20,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 05:32:20,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:32:20,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:32:20,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:32:20,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:32:20,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:32:20,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:32:20,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034821381] [2020-10-27 05:32:20,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:32:20,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:32:20,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087161322] [2020-10-27 05:32:20,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:32:20,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:32:20,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:32:20,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:32:20,429 INFO L87 Difference]: Start difference. First operand 2821 states and 4188 transitions. Second operand 10 states. [2020-10-27 05:32:20,907 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-27 05:32:22,875 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-27 05:32:23,314 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 05:32:25,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:32:25,784 INFO L93 Difference]: Finished difference Result 7993 states and 11994 transitions. [2020-10-27 05:32:25,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:32:25,784 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 128 [2020-10-27 05:32:25,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:32:25,791 INFO L225 Difference]: With dead ends: 7993 [2020-10-27 05:32:25,791 INFO L226 Difference]: Without dead ends: 5474 [2020-10-27 05:32:25,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2020-10-27 05:32:25,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5474 states. [2020-10-27 05:32:26,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5474 to 2821. [2020-10-27 05:32:26,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2821 states. [2020-10-27 05:32:26,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2821 states to 2821 states and 4182 transitions. [2020-10-27 05:32:26,848 INFO L78 Accepts]: Start accepts. Automaton has 2821 states and 4182 transitions. Word has length 128 [2020-10-27 05:32:26,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:32:26,848 INFO L481 AbstractCegarLoop]: Abstraction has 2821 states and 4182 transitions. [2020-10-27 05:32:26,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:32:26,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2821 states and 4182 transitions. [2020-10-27 05:32:26,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-27 05:32:26,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:32:26,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:32:26,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 05:32:26,850 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:32:26,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:32:26,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1621710397, now seen corresponding path program 1 times [2020-10-27 05:32:26,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:32:26,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101843928] [2020-10-27 05:32:26,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:32:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:26,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:26,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:27,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:28,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:28,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:28,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking...