/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:12:33,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:12:33,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:12:33,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:12:33,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:12:33,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:12:33,384 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:12:33,389 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:12:33,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:12:33,412 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:12:33,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:12:33,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:12:33,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:12:33,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:12:33,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:12:33,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:12:33,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:12:33,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:12:33,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:12:33,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:12:33,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:12:33,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:12:33,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:12:33,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:12:33,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:12:33,461 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:12:33,461 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:12:33,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:12:33,463 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:12:33,464 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:12:33,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:12:33,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:12:33,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:12:33,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:12:33,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:12:33,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:12:33,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:12:33,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:12:33,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:12:33,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:12:33,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:12:33,482 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 23:12:33,529 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:12:33,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:12:33,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:12:33,534 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:12:33,535 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:12:33,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:12:33,535 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:12:33,535 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:12:33,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:12:33,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:12:33,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:12:33,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:12:33,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:12:33,537 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:12:33,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:12:33,537 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:12:33,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:12:33,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:12:33,538 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:12:33,538 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:12:33,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:12:33,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:12:33,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:12:33,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:12:33,539 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:12:33,539 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:12:33,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:12:33,540 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:12:33,540 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:12:33,540 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:12:33,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:12:34,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:12:34,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:12:34,021 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:12:34,021 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:12:34,022 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c [2020-10-27 23:12:34,103 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/933210132/14a7a88d92904582a43b3c7749d23278/FLAG8255d4968 [2020-10-27 23:12:34,864 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:12:34,865 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c [2020-10-27 23:12:34,884 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/933210132/14a7a88d92904582a43b3c7749d23278/FLAG8255d4968 [2020-10-27 23:12:35,150 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/933210132/14a7a88d92904582a43b3c7749d23278 [2020-10-27 23:12:35,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:12:35,162 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:12:35,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:12:35,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:12:35,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:12:35,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:12:35" (1/1) ... [2020-10-27 23:12:35,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a406f9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:12:35, skipping insertion in model container [2020-10-27 23:12:35,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:12:35" (1/1) ... [2020-10-27 23:12:35,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:12:35,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:12:35,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:12:35,628 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:12:35,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:12:35,831 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:12:35,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:12:35 WrapperNode [2020-10-27 23:12:35,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:12:35,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:12:35,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:12:35,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:12:35,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:12:35" (1/1) ... [2020-10-27 23:12:35,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:12:35" (1/1) ... [2020-10-27 23:12:35,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:12:35" (1/1) ... [2020-10-27 23:12:35,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:12:35" (1/1) ... [2020-10-27 23:12:35,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:12:35" (1/1) ... [2020-10-27 23:12:35,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:12:35" (1/1) ... [2020-10-27 23:12:35,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:12:35" (1/1) ... [2020-10-27 23:12:35,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:12:35,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:12:35,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:12:35,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:12:35,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:12:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:12:36,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:12:36,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:12:36,098 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:12:36,098 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:12:36,098 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 23:12:36,098 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 23:12:36,098 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 23:12:36,099 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-27 23:12:36,099 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 23:12:36,099 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 23:12:36,099 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:12:36,099 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 23:12:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:12:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:12:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:12:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:12:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:12:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:12:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:12:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:12:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:12:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:12:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:12:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:12:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:12:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:12:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:12:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:12:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:12:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:12:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:12:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:12:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:12:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:12:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:12:37,723 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:12:37,724 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 23:12:37,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:12:37 BoogieIcfgContainer [2020-10-27 23:12:37,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:12:37,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:12:37,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:12:37,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:12:37,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:12:35" (1/3) ... [2020-10-27 23:12:37,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13962dfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:12:37, skipping insertion in model container [2020-10-27 23:12:37,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:12:35" (2/3) ... [2020-10-27 23:12:37,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13962dfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:12:37, skipping insertion in model container [2020-10-27 23:12:37,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:12:37" (3/3) ... [2020-10-27 23:12:37,736 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c [2020-10-27 23:12:37,749 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:12:37,755 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:12:37,769 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:12:37,800 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:12:37,801 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:12:37,801 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:12:37,801 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:12:37,801 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:12:37,802 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:12:37,802 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:12:37,802 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:12:37,831 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-27 23:12:37,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 23:12:37,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:12:37,857 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] [2020-10-27 23:12:37,858 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:12:37,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:12:37,873 INFO L82 PathProgramCache]: Analyzing trace with hash -949781661, now seen corresponding path program 1 times [2020-10-27 23:12:37,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:12:37,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481809679] [2020-10-27 23:12:37,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:12:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:38,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:39,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:39,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 23:12:39,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:39,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 742 [2020-10-27 23:12:39,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:39,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:12:39,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-27 23:12:39,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:12:39,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:12:39,895 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 23:12:39,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:12:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:39,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:39,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:39,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:12:39,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:39,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 23:12:39,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:39,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:12:39,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:12:39,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:12:39,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:39,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:12:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:40,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:40,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:40,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 23:12:40,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:40,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 23:12:40,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:40,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:12:40,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:12:40,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:12:40,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:40,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:12:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:40,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:40,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:40,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:12:40,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:40,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:12:40,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:40,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:12:40,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 23:12:40,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:12:40,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:12:40,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 23:12:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:40,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:40,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:40,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:12:40,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:40,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:12:40,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:40,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:12:40,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:12:40,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:12:40,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:40,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 23:12:40,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:40,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:40,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:40,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:12:40,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:40,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:12:40,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:40,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:12:40,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:12:40,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:12:40,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:12:40,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 23:12:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:40,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:40,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:40,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:12:40,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:40,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:12:40,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:40,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:12:40,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:12:40,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:12:40,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:40,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 23:12:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:40,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:40,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:40,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:12:40,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:40,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:12:40,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:40,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:12:40,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:12:40,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:12:40,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:40,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 23:12:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:40,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:40,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:40,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:12:40,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:40,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:12:40,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:40,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:12:40,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:12:40,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:12:40,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:40,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:12:40,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481809679] [2020-10-27 23:12:40,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:12:40,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:12:40,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587956124] [2020-10-27 23:12:40,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:12:40,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:12:40,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:12:40,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:12:40,564 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 7 states. [2020-10-27 23:12:41,656 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:12:42,141 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:12:42,705 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:12:43,300 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:12:44,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:12:44,100 INFO L93 Difference]: Finished difference Result 552 states and 927 transitions. [2020-10-27 23:12:44,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:12:44,101 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 109 [2020-10-27 23:12:44,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:12:44,119 INFO L225 Difference]: With dead ends: 552 [2020-10-27 23:12:44,119 INFO L226 Difference]: Without dead ends: 390 [2020-10-27 23:12:44,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:12:44,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2020-10-27 23:12:44,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 354. [2020-10-27 23:12:44,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-10-27 23:12:44,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 609 transitions. [2020-10-27 23:12:44,243 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 609 transitions. Word has length 109 [2020-10-27 23:12:44,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:12:44,244 INFO L481 AbstractCegarLoop]: Abstraction has 354 states and 609 transitions. [2020-10-27 23:12:44,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:12:44,246 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 609 transitions. [2020-10-27 23:12:44,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 23:12:44,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:12:44,259 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] [2020-10-27 23:12:44,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:12:44,259 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:12:44,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:12:44,260 INFO L82 PathProgramCache]: Analyzing trace with hash 978491041, now seen corresponding path program 1 times [2020-10-27 23:12:44,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:12:44,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618340110] [2020-10-27 23:12:44,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:12:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:44,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:45,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:45,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 23:12:45,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:45,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1560 [2020-10-27 23:12:45,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:45,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 23:12:45,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-27 23:12:45,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 23:12:45,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:46,620 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 23:12:46,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:12:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:46,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:46,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:46,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:12:46,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:46,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 23:12:46,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:46,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:12:46,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:12:46,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:12:46,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:46,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:12:46,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:46,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:46,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:46,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 23:12:46,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:46,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-27 23:12:46,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:46,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:12:46,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:12:46,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 23:12:46,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:47,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:12:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:47,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:47,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:47,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:12:47,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:47,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:12:47,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:47,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:12:47,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 23:12:47,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:12:47,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:47,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 23:12:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:47,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:47,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:47,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:12:47,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:47,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:12:47,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:47,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:12:47,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:12:47,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:12:47,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:47,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 23:12:47,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:47,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:47,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:47,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:12:47,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:47,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:12:47,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:47,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:12:47,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:12:47,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:12:47,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:12:47,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 23:12:47,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:47,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:47,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:47,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:12:47,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:47,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:12:47,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:47,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:12:47,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:12:47,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:12:47,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:12:47,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 23:12:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:47,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:47,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:47,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:12:47,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:47,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:12:47,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:47,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:12:47,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:12:47,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:12:47,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:12:47,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 23:12:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:47,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:47,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:12:47,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:12:47,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:12:47,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:12:47,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:12:47,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:12:47,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:12:47,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:12:47,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:12:47,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:12:47,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618340110] [2020-10-27 23:12:47,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:12:47,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 23:12:47,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925802502] [2020-10-27 23:12:47,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 23:12:47,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:12:47,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 23:12:47,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:12:47,473 INFO L87 Difference]: Start difference. First operand 354 states and 609 transitions. Second operand 13 states. [2020-10-27 23:12:50,582 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 23:12:51,290 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification that was a NOOP. DAG size: 285 [2020-10-27 23:12:52,060 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 23:12:52,681 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-27 23:12:53,570 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:12:54,200 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:12:54,868 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:12:55,536 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:12:56,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:12:56,709 INFO L93 Difference]: Finished difference Result 552 states and 927 transitions. [2020-10-27 23:12:56,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 23:12:56,710 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 109 [2020-10-27 23:12:56,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:12:56,715 INFO L225 Difference]: With dead ends: 552 [2020-10-27 23:12:56,716 INFO L226 Difference]: Without dead ends: 400 [2020-10-27 23:12:56,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:12:56,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-10-27 23:12:56,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 354. [2020-10-27 23:12:56,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-10-27 23:12:56,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 563 transitions. [2020-10-27 23:12:56,776 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 563 transitions. Word has length 109 [2020-10-27 23:12:56,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:12:56,776 INFO L481 AbstractCegarLoop]: Abstraction has 354 states and 563 transitions. [2020-10-27 23:12:56,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 23:12:56,776 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 563 transitions. [2020-10-27 23:12:56,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-27 23:12:56,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:12:56,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:12:56,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:12:56,781 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:12:56,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:12:56,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1377379524, now seen corresponding path program 1 times [2020-10-27 23:12:56,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:12:56,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837938197] [2020-10-27 23:12:56,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:12:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:12:56,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:57,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:57,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:12:57,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:01,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:01,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 23:13:01,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 23:13:01,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-27 23:13:01,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:01,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:13:01,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-27 23:13:01,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 23:13:01,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:13:02,528 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 23:13:02,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:13:02,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:02,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:02,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:02,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:13:02,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:02,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:13:02,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:02,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:13:02,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:13:02,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:13:02,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:02,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:13:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:02,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:02,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:02,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 23:13:02,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:02,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-27 23:13:02,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:02,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:13:02,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:13:02,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 23:13:02,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:02,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 23:13:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:02,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:02,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:02,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:13:02,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:02,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:13:02,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:02,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:13:02,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:13:02,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:13:02,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:02,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-27 23:13:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:02,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:02,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:02,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:13:02,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:02,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:13:02,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:02,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:13:02,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:13:02,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:13:02,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:02,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-27 23:13:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:02,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:02,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:02,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:13:02,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:02,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:13:02,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:02,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:13:02,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:13:02,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:13:02,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:02,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 23:13:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:02,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:02,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:02,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:13:02,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:02,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:13:02,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:02,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:13:02,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:13:02,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:13:02,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:02,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-27 23:13:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:02,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:03,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:03,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:13:03,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:03,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 23:13:03,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:03,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:13:03,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:13:03,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:13:03,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:03,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-27 23:13:03,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:03,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:03,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:03,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:13:03,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:03,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:13:03,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:03,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:13:03,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:13:03,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:13:03,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:03,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:13:03,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837938197] [2020-10-27 23:13:03,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:13:03,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:13:03,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773583817] [2020-10-27 23:13:03,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:13:03,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:13:03,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:13:03,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:13:03,156 INFO L87 Difference]: Start difference. First operand 354 states and 563 transitions. Second operand 10 states. [2020-10-27 23:13:03,821 WARN L193 SmtUtils]: Spent 589.00 ms on a formula simplification that was a NOOP. DAG size: 282 [2020-10-27 23:13:05,972 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 23:13:06,447 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 23:13:06,986 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 23:13:07,538 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:13:07,970 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 23:13:08,874 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:13:09,258 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:13:09,657 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:13:10,537 WARN L193 SmtUtils]: Spent 609.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 23:13:10,727 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-27 23:13:10,988 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 23:13:11,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:13:11,034 INFO L93 Difference]: Finished difference Result 713 states and 1142 transitions. [2020-10-27 23:13:11,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 23:13:11,035 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 154 [2020-10-27 23:13:11,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:13:11,040 INFO L225 Difference]: With dead ends: 713 [2020-10-27 23:13:11,041 INFO L226 Difference]: Without dead ends: 567 [2020-10-27 23:13:11,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2020-10-27 23:13:11,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2020-10-27 23:13:11,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 489. [2020-10-27 23:13:11,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-10-27 23:13:11,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 780 transitions. [2020-10-27 23:13:11,109 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 780 transitions. Word has length 154 [2020-10-27 23:13:11,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:13:11,112 INFO L481 AbstractCegarLoop]: Abstraction has 489 states and 780 transitions. [2020-10-27 23:13:11,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:13:11,112 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 780 transitions. [2020-10-27 23:13:11,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-27 23:13:11,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:13:11,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:13:11,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:13:11,118 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:13:11,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:13:11,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1674585182, now seen corresponding path program 1 times [2020-10-27 23:13:11,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:13:11,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831906382] [2020-10-27 23:13:11,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:13:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:11,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:11,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:11,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:12,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:13,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:13,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:16,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:16,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-27 23:13:16,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 23:13:16,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-27 23:13:16,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:16,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:13:16,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-27 23:13:16,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 23:13:16,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:16,852 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 23:13:16,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:13:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:16,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:16,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:16,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:13:16,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:16,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:13:16,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:16,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:13:16,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:13:16,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:13:16,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:16,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:13:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:16,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:17,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:17,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 23:13:17,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:17,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 23:13:17,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:17,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:13:17,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:13:17,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 23:13:17,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:17,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 23:13:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:17,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:17,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:17,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:13:17,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:17,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:13:17,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:17,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:13:17,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:13:17,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:13:17,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:13:17,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-27 23:13:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:17,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:17,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:17,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:13:17,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:17,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:13:17,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:17,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:13:17,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:13:17,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:13:17,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:17,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-27 23:13:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:17,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:17,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:17,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:13:17,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:17,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:13:17,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:17,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:13:17,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:13:17,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:13:17,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:17,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 23:13:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:17,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:17,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:17,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:13:17,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:17,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:13:17,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:17,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:13:17,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:13:17,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:13:17,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:17,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-27 23:13:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:17,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:17,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:17,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 23:13:17,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:17,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:13:17,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:17,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:13:17,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:13:17,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:13:17,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:17,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-27 23:13:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:17,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:17,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:17,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:13:17,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:17,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:13:17,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:17,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:13:17,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:13:17,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:13:17,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:17,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:13:17,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831906382] [2020-10-27 23:13:17,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:13:17,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:13:17,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292233905] [2020-10-27 23:13:17,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:13:17,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:13:17,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:13:17,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:13:17,361 INFO L87 Difference]: Start difference. First operand 489 states and 780 transitions. Second operand 10 states. [2020-10-27 23:13:18,063 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification that was a NOOP. DAG size: 282 [2020-10-27 23:13:20,196 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 23:13:20,676 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 23:13:21,225 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:13:21,671 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 23:13:22,078 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 23:13:22,249 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:13:23,574 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:13:23,948 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:13:24,809 WARN L193 SmtUtils]: Spent 601.00 ms on a formula simplification that was a NOOP. DAG size: 282 [2020-10-27 23:13:24,983 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 23:13:25,248 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 23:13:25,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:13:25,308 INFO L93 Difference]: Finished difference Result 1185 states and 1902 transitions. [2020-10-27 23:13:25,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 23:13:25,310 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 157 [2020-10-27 23:13:25,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:13:25,316 INFO L225 Difference]: With dead ends: 1185 [2020-10-27 23:13:25,316 INFO L226 Difference]: Without dead ends: 904 [2020-10-27 23:13:25,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2020-10-27 23:13:25,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2020-10-27 23:13:25,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 751. [2020-10-27 23:13:25,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2020-10-27 23:13:25,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1198 transitions. [2020-10-27 23:13:25,444 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1198 transitions. Word has length 157 [2020-10-27 23:13:25,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:13:25,446 INFO L481 AbstractCegarLoop]: Abstraction has 751 states and 1198 transitions. [2020-10-27 23:13:25,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:13:25,446 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1198 transitions. [2020-10-27 23:13:25,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-27 23:13:25,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:13:25,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:13:25,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:13:25,450 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:13:25,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:13:25,450 INFO L82 PathProgramCache]: Analyzing trace with hash -912076528, now seen corresponding path program 1 times [2020-10-27 23:13:25,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:13:25,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870903204] [2020-10-27 23:13:25,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:13:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:25,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:25,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:25,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:26,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:26,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:28,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:29,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:29,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:30,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:30,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-27 23:13:30,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:13:30,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 23:13:30,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:30,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:13:30,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-27 23:13:30,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 23:13:30,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:31,193 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 23:13:31,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:13:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:31,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:31,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:31,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:13:31,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:31,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:13:31,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:31,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:13:31,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:13:31,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:13:31,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:31,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:13:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:31,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:31,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:31,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 23:13:31,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:31,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 23:13:31,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:31,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:13:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:13:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 23:13:31,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:31,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 23:13:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:31,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:31,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:31,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:13:31,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:31,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:13:31,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:31,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:13:31,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:13:31,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:13:31,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:31,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-27 23:13:31,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:31,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:31,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:31,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:13:31,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:31,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:13:31,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:31,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:13:31,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:13:31,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:13:31,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:31,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-27 23:13:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:31,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:31,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:31,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:13:31,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:31,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 23:13:31,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:31,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:13:31,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:13:31,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:13:31,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:31,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 23:13:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:31,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:31,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:31,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 23:13:31,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:31,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:13:31,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:31,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:13:31,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:13:31,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:13:31,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:31,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-27 23:13:31,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:31,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:31,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:31,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 23:13:31,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:31,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:13:31,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:31,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:13:31,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:13:31,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:13:31,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:31,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-27 23:13:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:31,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:31,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:31,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:13:31,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:31,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:13:31,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:31,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:13:31,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:13:31,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:13:31,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:31,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:13:31,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870903204] [2020-10-27 23:13:31,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:13:31,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:13:31,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409529323] [2020-10-27 23:13:31,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:13:31,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:13:31,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:13:31,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:13:31,840 INFO L87 Difference]: Start difference. First operand 751 states and 1198 transitions. Second operand 10 states. [2020-10-27 23:13:32,453 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification that was a NOOP. DAG size: 282 [2020-10-27 23:13:34,485 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 23:13:34,917 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:13:35,270 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 23:13:35,609 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 23:13:35,778 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:13:36,376 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 23:13:36,543 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:13:37,637 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:13:38,457 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 23:13:38,640 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-27 23:13:38,897 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 23:13:38,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:13:38,990 INFO L93 Difference]: Finished difference Result 2105 states and 3374 transitions. [2020-10-27 23:13:38,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 23:13:38,991 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 160 [2020-10-27 23:13:38,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:13:39,002 INFO L225 Difference]: With dead ends: 2105 [2020-10-27 23:13:39,002 INFO L226 Difference]: Without dead ends: 1562 [2020-10-27 23:13:39,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2020-10-27 23:13:39,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2020-10-27 23:13:39,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1259. [2020-10-27 23:13:39,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1259 states. [2020-10-27 23:13:39,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 2002 transitions. [2020-10-27 23:13:39,159 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 2002 transitions. Word has length 160 [2020-10-27 23:13:39,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:13:39,160 INFO L481 AbstractCegarLoop]: Abstraction has 1259 states and 2002 transitions. [2020-10-27 23:13:39,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:13:39,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 2002 transitions. [2020-10-27 23:13:39,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-27 23:13:39,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:13:39,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:13:39,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:13:39,164 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:13:39,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:13:39,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1269987968, now seen corresponding path program 1 times [2020-10-27 23:13:39,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:13:39,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882668430] [2020-10-27 23:13:39,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:13:39,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:39,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:39,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:39,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:39,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:39,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:40,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:40,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:44,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:44,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 23:13:44,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:13:44,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 23:13:44,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:44,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:13:44,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-27 23:13:44,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 23:13:44,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:44,877 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 23:13:44,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:13:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:44,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:44,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:44,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:13:44,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:44,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:13:44,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:13:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:13:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:13:44,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:44,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:13:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:44,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:45,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:45,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 23:13:45,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:45,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-27 23:13:45,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:45,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:13:45,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:13:45,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 23:13:45,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:45,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 23:13:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:45,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:45,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:45,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:13:45,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:45,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:13:45,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:45,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:13:45,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:13:45,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:13:45,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:45,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-27 23:13:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:45,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:45,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:45,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:13:45,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:45,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:13:45,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:45,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:13:45,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:13:45,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:13:45,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:45,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-27 23:13:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:45,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:45,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:45,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 23:13:45,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:45,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:13:45,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:45,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:13:45,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:13:45,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:13:45,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:45,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 23:13:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:45,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:45,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:45,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 23:13:45,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:45,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:13:45,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:45,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:13:45,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:13:45,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:13:45,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:45,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-27 23:13:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:45,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:45,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:45,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 23:13:45,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:45,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:13:45,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:45,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:13:45,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:13:45,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:13:45,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:45,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-27 23:13:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:45,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:45,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:45,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:13:45,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:45,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:13:45,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:45,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:13:45,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:13:45,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:13:45,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:45,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:13:45,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882668430] [2020-10-27 23:13:45,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:13:45,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:13:45,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166845642] [2020-10-27 23:13:45,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:13:45,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:13:45,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:13:45,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:13:45,437 INFO L87 Difference]: Start difference. First operand 1259 states and 2002 transitions. Second operand 10 states. [2020-10-27 23:13:46,089 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification that was a NOOP. DAG size: 282 [2020-10-27 23:13:48,220 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:13:48,625 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 23:13:49,037 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 23:13:49,228 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:13:49,964 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 23:13:50,134 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:13:50,867 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 23:13:51,039 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:13:52,469 WARN L193 SmtUtils]: Spent 609.00 ms on a formula simplification that was a NOOP. DAG size: 282 [2020-10-27 23:13:53,087 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 23:13:53,352 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 23:13:53,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:13:53,448 INFO L93 Difference]: Finished difference Result 3929 states and 6278 transitions. [2020-10-27 23:13:53,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 23:13:53,449 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 163 [2020-10-27 23:13:53,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:13:53,465 INFO L225 Difference]: With dead ends: 3929 [2020-10-27 23:13:53,466 INFO L226 Difference]: Without dead ends: 2878 [2020-10-27 23:13:53,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2020-10-27 23:13:53,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2020-10-27 23:13:53,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 2251. [2020-10-27 23:13:53,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2251 states. [2020-10-27 23:13:53,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3506 transitions. [2020-10-27 23:13:53,691 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3506 transitions. Word has length 163 [2020-10-27 23:13:53,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:13:53,691 INFO L481 AbstractCegarLoop]: Abstraction has 2251 states and 3506 transitions. [2020-10-27 23:13:53,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:13:53,692 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3506 transitions. [2020-10-27 23:13:53,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 23:13:53,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:13:53,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:13:53,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:13:53,696 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:13:53,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:13:53,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1552841978, now seen corresponding path program 1 times [2020-10-27 23:13:53,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:13:53,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601937777] [2020-10-27 23:13:53,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:13:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:53,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:53,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:53,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:53,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:54,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:54,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:54,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:55,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:58,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:58,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-27 23:13:58,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:13:58,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 23:13:58,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:58,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 23:13:58,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-27 23:13:58,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 23:13:58,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:59,411 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 23:13:59,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:13:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:59,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:59,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:59,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:13:59,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:59,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:13:59,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:59,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:13:59,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:13:59,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:13:59,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:59,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:13:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:59,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:59,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:59,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 23:13:59,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:59,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-27 23:13:59,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:59,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:13:59,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:13:59,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 23:13:59,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:59,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 23:13:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:59,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:59,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:59,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:13:59,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:59,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:13:59,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:59,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:13:59,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:13:59,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:13:59,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:59,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-27 23:13:59,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:59,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:59,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:59,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 23:13:59,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:59,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:13:59,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:59,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:13:59,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:13:59,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 23:13:59,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:13:59,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-27 23:13:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:13:59,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:13:59,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:13:59,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 23:13:59,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:13:59,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:13:59,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:13:59,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:13:59,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:13:59,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 23:13:59,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:00,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 23:14:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:00,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:00,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:00,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 23:14:00,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:00,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:14:00,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:00,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:14:00,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:14:00,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 23:14:00,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:00,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 23:14:00,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:00,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:00,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:00,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 23:14:00,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:00,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:14:00,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:00,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:14:00,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:14:00,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 23:14:00,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:00,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-27 23:14:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:00,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:00,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:00,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:14:00,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:00,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:14:00,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:00,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:14:00,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 23:14:00,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 23:14:00,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:00,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:14:00,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601937777] [2020-10-27 23:14:00,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:14:00,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-27 23:14:00,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240321863] [2020-10-27 23:14:00,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 23:14:00,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:14:00,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 23:14:00,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-10-27 23:14:00,257 INFO L87 Difference]: Start difference. First operand 2251 states and 3506 transitions. Second operand 16 states. [2020-10-27 23:14:01,015 WARN L193 SmtUtils]: Spent 650.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 23:14:03,742 WARN L193 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 282 [2020-10-27 23:14:04,389 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification that was a NOOP. DAG size: 284 [2020-10-27 23:14:05,052 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification that was a NOOP. DAG size: 285 [2020-10-27 23:14:05,467 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 23:14:05,874 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:14:06,265 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 23:14:06,477 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 23:14:07,011 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 23:14:07,352 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:14:07,720 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 23:14:07,940 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 23:14:08,136 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 23:14:08,765 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 23:14:09,135 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:14:09,341 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 23:14:09,777 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 23:14:10,007 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 23:14:10,194 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 23:14:10,380 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 23:14:11,105 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 23:14:11,523 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:14:11,723 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 23:14:11,927 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 23:14:12,872 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 23:14:13,496 WARN L193 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 285 [2020-10-27 23:14:14,137 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification that was a NOOP. DAG size: 287 [2020-10-27 23:14:14,785 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 288 [2020-10-27 23:14:17,074 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 23:14:17,289 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-27 23:14:17,515 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-27 23:14:17,741 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-27 23:14:17,940 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 23:14:18,157 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 23:14:18,375 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 23:14:18,596 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-27 23:14:20,036 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 23:14:20,405 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 23:14:20,788 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-27 23:14:21,010 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-27 23:14:21,247 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-27 23:14:21,578 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 23:14:21,807 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 23:14:22,049 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-27 23:14:23,810 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-27 23:14:24,120 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 23:14:24,364 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-27 23:14:24,609 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 23:14:24,935 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 23:14:25,146 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 23:14:26,499 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-27 23:14:26,788 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-27 23:14:27,046 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-27 23:14:27,259 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 23:14:27,483 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-27 23:14:27,788 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-27 23:14:30,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:14:30,466 INFO L93 Difference]: Finished difference Result 15715 states and 25126 transitions. [2020-10-27 23:14:30,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-10-27 23:14:30,473 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 166 [2020-10-27 23:14:30,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:14:30,547 INFO L225 Difference]: With dead ends: 15715 [2020-10-27 23:14:30,547 INFO L226 Difference]: Without dead ends: 13672 [2020-10-27 23:14:30,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2083 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=1316, Invalid=5164, Unknown=0, NotChecked=0, Total=6480 [2020-10-27 23:14:30,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13672 states. [2020-10-27 23:14:31,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13672 to 10480. [2020-10-27 23:14:31,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10480 states. [2020-10-27 23:14:31,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10480 states to 10480 states and 16500 transitions. [2020-10-27 23:14:31,509 INFO L78 Accepts]: Start accepts. Automaton has 10480 states and 16500 transitions. Word has length 166 [2020-10-27 23:14:31,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:14:31,510 INFO L481 AbstractCegarLoop]: Abstraction has 10480 states and 16500 transitions. [2020-10-27 23:14:31,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 23:14:31,510 INFO L276 IsEmpty]: Start isEmpty. Operand 10480 states and 16500 transitions. [2020-10-27 23:14:31,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-27 23:14:31,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:14:31,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:14:31,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:14:31,520 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:14:31,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:14:31,521 INFO L82 PathProgramCache]: Analyzing trace with hash 809537440, now seen corresponding path program 1 times [2020-10-27 23:14:31,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:14:31,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952681407] [2020-10-27 23:14:31,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:14:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:31,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:31,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:31,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:31,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:32,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:32,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:32,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:32,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:32,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:36,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:36,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-27 23:14:36,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:14:36,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 23:14:36,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:36,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:14:36,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-27 23:14:36,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 23:14:36,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:37,209 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 23:14:37,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:14:37,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:37,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:37,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:37,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:14:37,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:37,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:14:37,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:37,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:14:37,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:14:37,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:14:37,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:37,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:14:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:37,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:37,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:37,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 23:14:37,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:37,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-27 23:14:37,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:37,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:14:37,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:14:37,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 23:14:37,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:37,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 23:14:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:37,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:37,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:37,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:14:37,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:37,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:14:37,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:37,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:14:37,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:14:37,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:14:37,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:37,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-27 23:14:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:37,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:37,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:37,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 23:14:37,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:37,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:14:37,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:37,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:14:37,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:14:37,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 23:14:37,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:37,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-27 23:14:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:37,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:37,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:37,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 23:14:37,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:37,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:14:37,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:37,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:14:37,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:14:37,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:14:37,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:37,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 23:14:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:37,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:37,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:37,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 23:14:37,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:37,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:14:37,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:37,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:14:37,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:14:37,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:14:37,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:37,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 23:14:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:37,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:37,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:37,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 23:14:37,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:37,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:14:37,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:37,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:14:37,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:14:37,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:14:37,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:37,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-27 23:14:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:37,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:37,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:14:37,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:14:37,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:14:37,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:14:37,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:14:37,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:14:37,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 23:14:37,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 23:14:37,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:14:37,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:14:37,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952681407] [2020-10-27 23:14:37,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:14:37,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:14:37,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025396630] [2020-10-27 23:14:37,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:14:37,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:14:37,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:14:37,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:14:37,771 INFO L87 Difference]: Start difference. First operand 10480 states and 16500 transitions. Second operand 11 states. [2020-10-27 23:14:38,394 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 23:14:40,666 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification that was a NOOP. DAG size: 282 [2020-10-27 23:14:41,085 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 23:14:41,468 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:14:41,652 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 23:14:42,022 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 23:14:42,230 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:14:42,418 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 23:14:43,418 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 23:14:43,625 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:14:43,809 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 23:14:44,866 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 23:14:45,076 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:14:45,265 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 23:14:46,834 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 23:14:47,501 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification that was a NOOP. DAG size: 285 [2020-10-27 23:14:49,017 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 23:14:49,239 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 23:14:49,484 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-27 23:14:49,753 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-27 23:14:50,699 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 23:14:50,925 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 23:14:51,146 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 23:14:52,178 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 23:14:52,385 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 23:14:53,428 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 23:14:53,658 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 23:14:54,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:14:54,837 INFO L93 Difference]: Finished difference Result 37029 states and 58962 transitions. [2020-10-27 23:14:54,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 23:14:54,840 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 167 [2020-10-27 23:14:54,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:14:54,974 INFO L225 Difference]: With dead ends: 37029 [2020-10-27 23:14:54,974 INFO L226 Difference]: Without dead ends: 26757 [2020-10-27 23:14:55,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=335, Invalid=1147, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 23:14:55,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26757 states. [2020-10-27 23:14:56,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26757 to 20809. [2020-10-27 23:14:56,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20809 states. [2020-10-27 23:14:56,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20809 states to 20809 states and 32822 transitions. [2020-10-27 23:14:56,682 INFO L78 Accepts]: Start accepts. Automaton has 20809 states and 32822 transitions. Word has length 167 [2020-10-27 23:14:56,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:14:56,683 INFO L481 AbstractCegarLoop]: Abstraction has 20809 states and 32822 transitions. [2020-10-27 23:14:56,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:14:56,683 INFO L276 IsEmpty]: Start isEmpty. Operand 20809 states and 32822 transitions. [2020-10-27 23:14:56,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-27 23:14:56,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:14:56,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:14:56,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:14:56,695 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:14:56,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:14:56,695 INFO L82 PathProgramCache]: Analyzing trace with hash -548143052, now seen corresponding path program 1 times [2020-10-27 23:14:56,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:14:56,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090829869] [2020-10-27 23:14:56,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:14:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:14:56,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:56,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:57,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:57,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:57,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:14:57,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:00,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:00,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:00,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:00,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:01,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:01,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-27 23:15:01,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:15:01,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 23:15:01,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:01,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:15:01,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-27 23:15:01,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 23:15:01,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:02,385 WARN L193 SmtUtils]: Spent 545.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 23:15:02,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:15:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:02,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:02,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:02,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:15:02,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:02,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:15:02,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:02,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:02,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:02,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:02,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:02,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:15:02,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:02,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:02,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:02,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 23:15:02,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:02,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 23:15:02,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:02,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:15:02,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:02,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 23:15:02,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:02,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 23:15:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:02,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:02,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:02,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:15:02,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:02,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:15:02,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:02,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:15:02,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:02,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:15:02,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:02,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-27 23:15:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:02,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:02,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:02,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 23:15:02,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:02,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:15:02,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:02,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:15:02,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:15:02,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 23:15:02,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:02,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-27 23:15:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:02,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:02,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:02,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 23:15:02,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:02,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:15:02,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:02,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:02,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:15:02,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:02,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:02,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-27 23:15:02,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:02,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:02,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:02,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 23:15:02,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:02,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:15:02,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:02,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:02,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:15:02,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:02,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:02,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-27 23:15:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:02,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:02,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:02,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 23:15:02,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:02,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:15:02,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:02,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:02,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:15:02,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:02,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:02,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-27 23:15:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:02,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:02,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:02,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:15:02,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:02,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 23:15:02,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:02,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:02,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:15:02,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:02,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:02,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:15:02,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090829869] [2020-10-27 23:15:02,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:15:02,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:15:02,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995237741] [2020-10-27 23:15:02,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:15:02,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:15:02,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:15:02,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:15:02,824 INFO L87 Difference]: Start difference. First operand 20809 states and 32822 transitions. Second operand 10 states. [2020-10-27 23:15:03,481 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification that was a NOOP. DAG size: 284 [2020-10-27 23:15:05,703 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:15:05,897 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 23:15:06,153 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:15:06,692 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:15:07,238 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:15:08,092 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-27 23:15:08,373 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-27 23:15:08,677 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 23:15:09,296 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 23:15:09,947 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 23:15:11,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:15:11,973 INFO L93 Difference]: Finished difference Result 60157 states and 95815 transitions. [2020-10-27 23:15:11,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 23:15:11,973 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 168 [2020-10-27 23:15:11,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:15:12,144 INFO L225 Difference]: With dead ends: 60157 [2020-10-27 23:15:12,144 INFO L226 Difference]: Without dead ends: 43400 [2020-10-27 23:15:12,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:15:12,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43400 states. [2020-10-27 23:15:14,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43400 to 34181. [2020-10-27 23:15:14,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34181 states. [2020-10-27 23:15:14,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34181 states to 34181 states and 53471 transitions. [2020-10-27 23:15:14,525 INFO L78 Accepts]: Start accepts. Automaton has 34181 states and 53471 transitions. Word has length 168 [2020-10-27 23:15:14,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:15:14,525 INFO L481 AbstractCegarLoop]: Abstraction has 34181 states and 53471 transitions. [2020-10-27 23:15:14,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:15:14,525 INFO L276 IsEmpty]: Start isEmpty. Operand 34181 states and 53471 transitions. [2020-10-27 23:15:14,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-27 23:15:14,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:15:14,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:15:14,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:15:14,530 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:15:14,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:15:14,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1487932276, now seen corresponding path program 1 times [2020-10-27 23:15:14,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:15:14,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023718607] [2020-10-27 23:15:14,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:15:14,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:14,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:15,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:15,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:15,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:15,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:15,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:18,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:18,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:19,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:19,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:19,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:19,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-27 23:15:19,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:15:19,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 23:15:19,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:19,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:15:19,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-27 23:15:19,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 23:15:19,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:20,262 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 23:15:20,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:15:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:20,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:20,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:20,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:15:20,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:20,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:15:20,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:20,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:20,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:20,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:20,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:20,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:15:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:20,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:20,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:20,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 23:15:20,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:20,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 23:15:20,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:20,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:15:20,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:20,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 23:15:20,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:20,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 23:15:20,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:20,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:20,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:20,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:15:20,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:20,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 23:15:20,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:20,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:15:20,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:20,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:15:20,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:20,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-27 23:15:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:20,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:20,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:20,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 23:15:20,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:20,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:15:20,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:20,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:15:20,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:20,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:15:20,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:20,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-27 23:15:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:20,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:20,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:20,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 23:15:20,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:20,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:15:20,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:20,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:15:20,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:15:20,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 23:15:20,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:20,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-27 23:15:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:20,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:20,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:20,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 23:15:20,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:20,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:15:20,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:20,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:20,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:15:20,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:20,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:20,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-27 23:15:20,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:20,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:20,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:20,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 23:15:20,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:20,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:15:20,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:20,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:20,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:15:20,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:20,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:20,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-27 23:15:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:20,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:20,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:20,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:15:20,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:20,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 23:15:20,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:20,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:20,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:15:20,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:20,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:20,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:15:20,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023718607] [2020-10-27 23:15:20,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:15:20,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:15:20,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241277176] [2020-10-27 23:15:20,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:15:20,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:15:20,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:15:20,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:15:20,702 INFO L87 Difference]: Start difference. First operand 34181 states and 53471 transitions. Second operand 10 states. [2020-10-27 23:15:21,320 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification that was a NOOP. DAG size: 284 [2020-10-27 23:15:23,594 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 23:15:23,958 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:15:24,153 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 23:15:24,417 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:15:24,899 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:15:25,627 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:15:26,064 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-27 23:15:26,341 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-27 23:15:26,616 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 23:15:27,148 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 23:15:30,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:15:30,043 INFO L93 Difference]: Finished difference Result 84783 states and 134041 transitions. [2020-10-27 23:15:30,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 23:15:30,044 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 168 [2020-10-27 23:15:30,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:15:30,301 INFO L225 Difference]: With dead ends: 84783 [2020-10-27 23:15:30,302 INFO L226 Difference]: Without dead ends: 63722 [2020-10-27 23:15:30,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:15:30,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63722 states. [2020-10-27 23:15:33,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63722 to 50534. [2020-10-27 23:15:33,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50534 states. [2020-10-27 23:15:34,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50534 states to 50534 states and 78547 transitions. [2020-10-27 23:15:34,083 INFO L78 Accepts]: Start accepts. Automaton has 50534 states and 78547 transitions. Word has length 168 [2020-10-27 23:15:34,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:15:34,084 INFO L481 AbstractCegarLoop]: Abstraction has 50534 states and 78547 transitions. [2020-10-27 23:15:34,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:15:34,084 INFO L276 IsEmpty]: Start isEmpty. Operand 50534 states and 78547 transitions. [2020-10-27 23:15:34,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-27 23:15:34,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:15:34,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:15:34,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:15:34,087 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:15:34,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:15:34,087 INFO L82 PathProgramCache]: Analyzing trace with hash 764389300, now seen corresponding path program 1 times [2020-10-27 23:15:34,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:15:34,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800822906] [2020-10-27 23:15:34,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:15:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:34,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:34,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:34,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:34,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:34,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:35,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:35,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:35,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:36,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:36,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:36,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:36,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:39,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:39,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-27 23:15:39,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:15:39,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 23:15:39,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:39,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:15:39,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-27 23:15:39,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 23:15:39,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:39,783 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 23:15:39,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:15:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:39,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:39,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:39,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:15:39,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:39,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:15:39,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:39,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:39,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:39,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:39,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:39,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:15:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:39,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:39,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:39,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 23:15:39,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:39,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 23:15:39,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:39,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:15:39,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:39,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 23:15:39,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:39,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 23:15:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:39,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:39,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:39,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:15:39,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:39,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 23:15:39,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:39,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:15:39,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:39,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:15:39,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:39,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-27 23:15:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:39,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:39,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:39,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 23:15:39,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:39,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:15:39,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:39,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:15:39,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:39,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:15:39,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:40,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-27 23:15:40,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:40,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:40,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:40,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 23:15:40,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:40,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:15:40,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:40,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:15:40,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:40,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:15:40,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:40,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 23:15:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:40,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:40,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:40,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 23:15:40,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:40,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:15:40,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:40,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:15:40,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:15:40,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 23:15:40,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:40,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-27 23:15:40,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:40,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:40,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:40,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 23:15:40,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:40,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:15:40,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:40,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:40,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:15:40,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:40,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:40,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-27 23:15:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:40,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:40,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:40,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:15:40,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:40,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 23:15:40,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:40,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:40,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:15:40,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:40,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:40,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:15:40,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800822906] [2020-10-27 23:15:40,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:15:40,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:15:40,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055709924] [2020-10-27 23:15:40,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:15:40,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:15:40,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:15:40,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:15:40,252 INFO L87 Difference]: Start difference. First operand 50534 states and 78547 transitions. Second operand 10 states. [2020-10-27 23:15:40,889 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification that was a NOOP. DAG size: 284 [2020-10-27 23:15:43,164 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 23:15:43,609 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 23:15:44,036 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:15:44,236 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 23:15:44,543 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:15:45,372 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:15:45,821 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:15:46,324 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-27 23:15:46,635 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-27 23:15:46,927 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 23:15:51,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:15:51,591 INFO L93 Difference]: Finished difference Result 123650 states and 194416 transitions. [2020-10-27 23:15:51,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 23:15:51,592 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 168 [2020-10-27 23:15:51,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:15:52,086 INFO L225 Difference]: With dead ends: 123650 [2020-10-27 23:15:52,086 INFO L226 Difference]: Without dead ends: 92568 [2020-10-27 23:15:52,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:15:52,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92568 states. [2020-10-27 23:15:57,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92568 to 74007. [2020-10-27 23:15:57,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74007 states. [2020-10-27 23:15:58,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74007 states to 74007 states and 114280 transitions. [2020-10-27 23:15:58,043 INFO L78 Accepts]: Start accepts. Automaton has 74007 states and 114280 transitions. Word has length 168 [2020-10-27 23:15:58,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:15:58,043 INFO L481 AbstractCegarLoop]: Abstraction has 74007 states and 114280 transitions. [2020-10-27 23:15:58,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:15:58,044 INFO L276 IsEmpty]: Start isEmpty. Operand 74007 states and 114280 transitions. [2020-10-27 23:15:58,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-27 23:15:58,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:15:58,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:15:58,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 23:15:58,046 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:15:58,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:15:58,046 INFO L82 PathProgramCache]: Analyzing trace with hash -241932876, now seen corresponding path program 1 times [2020-10-27 23:15:58,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:15:58,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139241057] [2020-10-27 23:15:58,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:15:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:58,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:58,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:58,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:58,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:58,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:59,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:00,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:00,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:00,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:03,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:03,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-27 23:16:03,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:16:03,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 23:16:03,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:03,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:16:03,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-27 23:16:03,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 23:16:03,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:03,856 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 23:16:03,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:16:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:03,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:03,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:03,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:16:03,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:03,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:16:03,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:03,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:03,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:03,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:03,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:03,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:16:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:03,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:03,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:03,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 23:16:03,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:03,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 23:16:03,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:03,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:03,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:03,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 23:16:03,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:03,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 23:16:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:03,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:03,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:03,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:16:03,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:03,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 23:16:03,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:03,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:03,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:03,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:16:03,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:04,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-27 23:16:04,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:04,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:04,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:04,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 23:16:04,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:04,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:16:04,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:04,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:04,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:04,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:16:04,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:04,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-27 23:16:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:04,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:04,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:04,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 23:16:04,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:04,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:16:04,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:04,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:04,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:04,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:16:04,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:04,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 23:16:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:04,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:04,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:04,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 23:16:04,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:04,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:16:04,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:04,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:04,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:04,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:16:04,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:04,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 23:16:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:04,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:04,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:04,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 23:16:04,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:04,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:16:04,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:04,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:16:04,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:16:04,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 23:16:04,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:04,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-27 23:16:04,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:04,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:04,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:04,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:16:04,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:04,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 23:16:04,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:04,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:04,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:16:04,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:04,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:04,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:16:04,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139241057] [2020-10-27 23:16:04,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:16:04,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:16:04,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202474839] [2020-10-27 23:16:04,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:16:04,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:16:04,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:16:04,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:16:04,318 INFO L87 Difference]: Start difference. First operand 74007 states and 114280 transitions. Second operand 10 states. [2020-10-27 23:16:04,981 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification that was a NOOP. DAG size: 284 [2020-10-27 23:16:07,346 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 23:16:07,729 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 23:16:08,146 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 23:16:08,552 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 23:16:08,760 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 125