/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:39:20,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:39:20,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:39:20,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:39:20,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:39:20,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:39:20,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:39:20,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:39:20,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:39:20,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:39:20,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:39:20,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:39:20,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:39:20,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:39:20,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:39:20,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:39:20,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:39:20,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:39:20,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:39:20,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:39:20,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:39:20,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:39:20,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:39:20,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:39:20,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:39:20,861 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:39:20,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:39:20,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:39:20,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:39:20,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:39:20,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:39:20,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:39:20,872 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:39:20,873 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:39:20,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:39:20,875 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:39:20,876 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:39:20,876 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:39:20,876 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:39:20,877 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:39:20,878 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:39:20,886 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 04:39:20,941 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:39:20,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:39:20,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:39:20,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:39:20,947 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:39:20,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:39:20,947 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:39:20,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:39:20,948 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:39:20,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:39:20,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:39:20,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:39:20,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:39:20,950 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:39:20,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:39:20,950 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:39:20,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:39:20,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:39:20,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:39:20,951 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:39:20,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:39:20,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:39:20,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:39:20,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:39:20,952 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:39:20,953 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:39:20,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:39:20,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:39:20,953 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:39:20,953 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:39:21,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:39:21,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:39:21,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:39:21,443 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:39:21,443 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:39:21,444 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c [2020-10-27 04:39:21,530 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be7739929/a5e72ce0e04347c8b8cf1b8ae081fead/FLAGc5fc6b034 [2020-10-27 04:39:22,331 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:39:22,331 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c [2020-10-27 04:39:22,354 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be7739929/a5e72ce0e04347c8b8cf1b8ae081fead/FLAGc5fc6b034 [2020-10-27 04:39:22,650 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be7739929/a5e72ce0e04347c8b8cf1b8ae081fead [2020-10-27 04:39:22,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:39:22,663 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:39:22,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:39:22,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:39:22,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:39:22,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:39:22" (1/1) ... [2020-10-27 04:39:22,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aae1318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:39:22, skipping insertion in model container [2020-10-27 04:39:22,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:39:22" (1/1) ... [2020-10-27 04:39:22,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:39:22,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:39:23,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:39:23,176 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:39:23,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:39:23,338 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:39:23,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:39:23 WrapperNode [2020-10-27 04:39:23,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:39:23,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:39:23,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:39:23,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:39:23,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:39:23" (1/1) ... [2020-10-27 04:39:23,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:39:23" (1/1) ... [2020-10-27 04:39:23,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:39:23" (1/1) ... [2020-10-27 04:39:23,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:39:23" (1/1) ... [2020-10-27 04:39:23,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:39:23" (1/1) ... [2020-10-27 04:39:23,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:39:23" (1/1) ... [2020-10-27 04:39:23,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:39:23" (1/1) ... [2020-10-27 04:39:23,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:39:23,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:39:23,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:39:23,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:39:23,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:39:23" (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 04:39:23,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:39:23,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:39:23,533 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:39:23,533 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:39:23,533 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 04:39:23,533 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 04:39:23,534 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 04:39:23,534 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 04:39:23,534 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 04:39:23,534 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:39:23,534 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 04:39:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:39:23,535 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:39:23,535 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:39:23,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:39:23,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:39:23,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 04:39:23,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:39:23,536 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:39:23,536 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:39:23,536 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:39:23,536 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:39:23,536 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:39:23,536 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:39:23,537 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:39:23,537 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:39:23,537 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:39:23,537 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:39:23,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:39:23,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:39:23,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:39:23,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:39:23,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:39:23,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:39:24,719 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:39:24,720 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 04:39:24,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:39:24 BoogieIcfgContainer [2020-10-27 04:39:24,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:39:24,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:39:24,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:39:24,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:39:24,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:39:22" (1/3) ... [2020-10-27 04:39:24,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ea8b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:39:24, skipping insertion in model container [2020-10-27 04:39:24,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:39:23" (2/3) ... [2020-10-27 04:39:24,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ea8b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:39:24, skipping insertion in model container [2020-10-27 04:39:24,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:39:24" (3/3) ... [2020-10-27 04:39:24,764 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c [2020-10-27 04:39:24,792 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:39:24,804 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:39:24,824 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:39:24,857 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:39:24,857 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:39:24,857 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:39:24,857 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:39:24,858 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:39:24,858 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:39:24,858 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:39:24,858 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:39:24,899 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-10-27 04:39:24,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 04:39:24,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:39:24,913 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] [2020-10-27 04:39:24,914 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:39:24,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:39:24,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1255270413, now seen corresponding path program 1 times [2020-10-27 04:39:24,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:39:24,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565755761] [2020-10-27 04:39:24,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:39:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:25,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:25,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:25,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 04:39:25,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:25,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 474 [2020-10-27 04:39:25,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:25,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:25,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 04:39:25,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:25,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:39:26,218 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:39:26,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:39:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:26,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:26,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:26,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:39:26,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:26,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 04:39:26,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:26,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:26,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:26,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:26,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:26,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:39:26,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:26,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:26,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:26,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:39:26,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:26,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:39:26,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:26,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:26,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:26,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:26,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:26,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 04:39:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:26,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:26,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:26,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:39:26,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:26,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:39:26,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:26,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:26,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:39:26,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:26,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:26,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 04:39:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:26,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:26,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:26,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:26,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:26,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:39:26,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:26,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:26,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:26,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:26,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:26,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:39:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:26,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:26,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:26,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:26,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:26,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:39:26,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:26,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:26,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:26,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:26,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:26,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 04:39:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:26,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:26,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:26,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:26,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:26,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:39:26,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:26,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:26,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:26,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:26,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:26,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:39:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:26,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:26,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:26,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:39:26,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:26,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:39:26,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:39:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:26,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:26,516 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 04:39:26,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565755761] [2020-10-27 04:39:26,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:39:26,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 04:39:26,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785819594] [2020-10-27 04:39:26,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:39:26,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:39:26,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:39:26,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:39:26,545 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 6 states. [2020-10-27 04:39:27,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:39:27,967 INFO L93 Difference]: Finished difference Result 307 states and 486 transitions. [2020-10-27 04:39:27,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:39:27,970 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-27 04:39:27,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:39:27,984 INFO L225 Difference]: With dead ends: 307 [2020-10-27 04:39:27,984 INFO L226 Difference]: Without dead ends: 193 [2020-10-27 04:39:27,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:39:28,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-27 04:39:28,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 175. [2020-10-27 04:39:28,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-27 04:39:28,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 280 transitions. [2020-10-27 04:39:28,060 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 280 transitions. Word has length 66 [2020-10-27 04:39:28,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:39:28,061 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 280 transitions. [2020-10-27 04:39:28,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:39:28,061 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 280 transitions. [2020-10-27 04:39:28,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 04:39:28,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:39:28,066 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] [2020-10-27 04:39:28,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:39:28,066 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:39:28,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:39:28,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1194329717, now seen corresponding path program 1 times [2020-10-27 04:39:28,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:39:28,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469053671] [2020-10-27 04:39:28,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:39:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:28,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:28,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:28,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 04:39:28,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:28,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 782 [2020-10-27 04:39:28,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:28,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:39:28,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 04:39:28,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:39:28,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:29,295 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:39:29,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:39:29,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:29,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:29,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:29,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:39:29,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:29,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:39:29,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:29,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:29,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:29,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:29,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:29,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:39:29,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:29,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:29,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:29,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:39:29,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:29,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 04:39:29,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:29,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:39:29,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:29,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:39:29,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:29,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 04:39:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:29,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:29,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:29,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:39:29,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:29,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:39:29,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:29,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:39:29,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:39:29,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:39:29,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:29,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 04:39:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:29,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:29,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:29,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:29,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:29,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:39:29,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:29,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:29,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:29,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:29,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:29,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:39:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:29,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:29,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:29,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:29,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:29,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:39:29,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:29,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:29,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:29,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:29,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:29,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 04:39:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:29,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:29,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:29,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:29,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:29,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:39:29,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:29,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:29,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:29,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:29,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:29,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:39:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:29,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:29,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:29,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:39:29,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:29,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:39:29,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:29,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:29,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:39:29,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:29,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:29,671 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 04:39:29,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469053671] [2020-10-27 04:39:29,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:39:29,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 04:39:29,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966310963] [2020-10-27 04:39:29,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 04:39:29,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:39:29,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 04:39:29,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:39:29,676 INFO L87 Difference]: Start difference. First operand 175 states and 280 transitions. Second operand 12 states. [2020-10-27 04:39:30,402 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:39:30,775 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 04:39:31,246 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 04:39:31,631 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:39:33,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:39:33,619 INFO L93 Difference]: Finished difference Result 302 states and 474 transitions. [2020-10-27 04:39:33,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 04:39:33,619 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2020-10-27 04:39:33,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:39:33,625 INFO L225 Difference]: With dead ends: 302 [2020-10-27 04:39:33,625 INFO L226 Difference]: Without dead ends: 193 [2020-10-27 04:39:33,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:39:33,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-27 04:39:33,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 175. [2020-10-27 04:39:33,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-27 04:39:33,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 250 transitions. [2020-10-27 04:39:33,686 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 250 transitions. Word has length 66 [2020-10-27 04:39:33,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:39:33,686 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 250 transitions. [2020-10-27 04:39:33,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 04:39:33,687 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 250 transitions. [2020-10-27 04:39:33,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 04:39:33,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:39:33,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:39:33,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:39:33,692 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:39:33,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:39:33,695 INFO L82 PathProgramCache]: Analyzing trace with hash 120280502, now seen corresponding path program 1 times [2020-10-27 04:39:33,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:39:33,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472357383] [2020-10-27 04:39:33,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:39:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:33,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:33,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:34,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:35,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:38,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:38,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 04:39:38,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:39:38,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 04:39:38,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:38,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:39:38,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 04:39:38,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 04:39:38,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:39:39,139 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:39:39,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:39:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:39,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:39,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:39,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:39:39,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:39,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:39:39,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:39,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:39,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:39,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:39,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:39,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:39:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:39,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:39,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:39,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 04:39:39,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:39,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 04:39:39,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:39,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:39,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:39,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 04:39:39,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:39,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:39:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:39,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:39,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:39,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:39:39,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:39,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:39:39,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:39,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:39,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:39,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:39:39,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:39,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:39:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:39,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:39,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:39,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:39,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:39,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 04:39:39,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:39,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:39:39,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:39:39,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:39:39,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:39,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 04:39:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:39,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:39,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:39,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:39,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:39,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:39:39,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:39,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:39,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:39,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:39,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:39,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 04:39:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:39,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:39,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:39,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:39,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:39,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:39:39,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:39,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:39,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:39,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:39,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:39,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 04:39:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:39,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:39,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:39,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:39:39,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:39,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:39:39,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:39,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:39,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:39:39,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:39,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:39,520 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 04:39:39,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472357383] [2020-10-27 04:39:39,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:39:39,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:39:39,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045024708] [2020-10-27 04:39:39,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:39:39,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:39:39,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:39:39,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:39:39,523 INFO L87 Difference]: Start difference. First operand 175 states and 250 transitions. Second operand 9 states. [2020-10-27 04:39:39,905 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:39:42,599 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 04:39:43,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:39:43,344 INFO L93 Difference]: Finished difference Result 427 states and 639 transitions. [2020-10-27 04:39:43,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:39:43,345 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-10-27 04:39:43,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:39:43,353 INFO L225 Difference]: With dead ends: 427 [2020-10-27 04:39:43,353 INFO L226 Difference]: Without dead ends: 324 [2020-10-27 04:39:43,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:39:43,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-27 04:39:43,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 278. [2020-10-27 04:39:43,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-27 04:39:43,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 404 transitions. [2020-10-27 04:39:43,433 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 404 transitions. Word has length 95 [2020-10-27 04:39:43,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:39:43,434 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 404 transitions. [2020-10-27 04:39:43,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:39:43,434 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 404 transitions. [2020-10-27 04:39:43,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 04:39:43,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:39:43,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:39:43,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:39:43,442 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:39:43,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:39:43,443 INFO L82 PathProgramCache]: Analyzing trace with hash 680270721, now seen corresponding path program 1 times [2020-10-27 04:39:43,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:39:43,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649879286] [2020-10-27 04:39:43,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:39:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:43,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:43,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:43,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:43,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:44,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:48,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:48,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 04:39:48,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:39:48,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 04:39:48,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:48,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:39:48,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:39:48,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 04:39:48,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:39:48,904 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:39:48,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:39:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:48,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:48,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:48,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:39:48,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:48,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:39:48,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:48,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:48,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:48,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:48,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:39:48,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:39:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:48,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:49,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:49,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 04:39:49,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:49,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 04:39:49,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:49,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:39:49,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:49,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:39:49,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:49,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:39:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:49,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:49,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:49,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:39:49,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:49,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:39:49,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:49,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:49,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:49,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:39:49,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:49,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:39:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:49,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:49,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:49,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:39:49,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:49,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:39:49,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:49,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:49,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:39:49,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:39:49,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:49,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:39:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:49,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:49,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:49,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:49,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:49,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:39:49,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:49,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:49,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:49,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:49,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:49,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:39:49,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:49,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:49,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:49,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:49,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:49,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:39:49,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:49,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:49,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:49,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:49,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:49,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 04:39:49,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:49,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:49,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:49,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:39:49,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:49,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:39:49,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:49,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:49,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:39:49,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:49,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:49,346 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 04:39:49,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649879286] [2020-10-27 04:39:49,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:39:49,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:39:49,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455154779] [2020-10-27 04:39:49,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:39:49,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:39:49,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:39:49,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:39:49,352 INFO L87 Difference]: Start difference. First operand 278 states and 404 transitions. Second operand 9 states. [2020-10-27 04:39:49,688 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:39:50,017 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:39:50,385 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 04:39:50,730 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:39:51,732 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:39:54,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:39:54,426 INFO L93 Difference]: Finished difference Result 860 states and 1261 transitions. [2020-10-27 04:39:54,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 04:39:54,427 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2020-10-27 04:39:54,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:39:54,432 INFO L225 Difference]: With dead ends: 860 [2020-10-27 04:39:54,432 INFO L226 Difference]: Without dead ends: 596 [2020-10-27 04:39:54,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:39:54,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2020-10-27 04:39:54,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 533. [2020-10-27 04:39:54,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2020-10-27 04:39:54,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 764 transitions. [2020-10-27 04:39:54,494 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 764 transitions. Word has length 97 [2020-10-27 04:39:54,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:39:54,494 INFO L481 AbstractCegarLoop]: Abstraction has 533 states and 764 transitions. [2020-10-27 04:39:54,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:39:54,494 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 764 transitions. [2020-10-27 04:39:54,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 04:39:54,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:39:54,499 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:39:54,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:39:54,499 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:39:54,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:39:54,500 INFO L82 PathProgramCache]: Analyzing trace with hash -45146322, now seen corresponding path program 1 times [2020-10-27 04:39:54,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:39:54,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86817046] [2020-10-27 04:39:54,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:39:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:54,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:54,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:54,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:54,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:56,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:59,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:59,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 04:39:59,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:39:59,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 04:39:59,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:59,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:39:59,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:39:59,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 04:39:59,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:59,959 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:39:59,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:39:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:59,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:59,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:59,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:39:59,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:59,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:39:59,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:59,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:59,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:59,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:59,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:59,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:39:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:00,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:00,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:00,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 04:40:00,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:00,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 04:40:00,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:00,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:40:00,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:00,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:40:00,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:00,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:40:00,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:00,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:00,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:00,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:40:00,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:00,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:40:00,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:00,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:00,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:00,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:40:00,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:00,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:40:00,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:00,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:00,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:00,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:40:00,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:00,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:40:00,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:00,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:00,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:40:00,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:40:00,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:00,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 04:40:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:00,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:00,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:00,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:40:00,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:00,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:40:00,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:00,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:00,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:40:00,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:00,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:00,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 04:40:00,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:00,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:00,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:00,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:40:00,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:00,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:40:00,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:00,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:00,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:40:00,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:00,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:00,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 04:40:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:00,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:00,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:00,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:40:00,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:00,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:40:00,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:00,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:00,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:40:00,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:00,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:00,314 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 04:40:00,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86817046] [2020-10-27 04:40:00,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:40:00,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:40:00,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787080665] [2020-10-27 04:40:00,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:40:00,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:40:00,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:40:00,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:40:00,317 INFO L87 Difference]: Start difference. First operand 533 states and 764 transitions. Second operand 9 states. [2020-10-27 04:40:00,675 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:40:01,020 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:40:01,404 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:40:01,753 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 04:40:02,801 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:40:05,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:40:05,832 INFO L93 Difference]: Finished difference Result 1654 states and 2390 transitions. [2020-10-27 04:40:05,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 04:40:05,833 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-10-27 04:40:05,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:40:05,840 INFO L225 Difference]: With dead ends: 1654 [2020-10-27 04:40:05,841 INFO L226 Difference]: Without dead ends: 1146 [2020-10-27 04:40:05,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:40:05,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2020-10-27 04:40:05,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1031. [2020-10-27 04:40:05,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2020-10-27 04:40:05,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1455 transitions. [2020-10-27 04:40:05,940 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1455 transitions. Word has length 98 [2020-10-27 04:40:05,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:40:05,940 INFO L481 AbstractCegarLoop]: Abstraction has 1031 states and 1455 transitions. [2020-10-27 04:40:05,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:40:05,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1455 transitions. [2020-10-27 04:40:05,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 04:40:05,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:40:05,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:40:05,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:40:05,945 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:40:05,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:40:05,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1691878522, now seen corresponding path program 1 times [2020-10-27 04:40:05,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:40:05,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799471437] [2020-10-27 04:40:05,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:40:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:06,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:06,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:06,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:06,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:07,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:11,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:11,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 04:40:11,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:40:11,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 04:40:11,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:11,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:40:11,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 04:40:11,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 04:40:11,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:11,465 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:40:11,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:40:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:11,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:11,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:11,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:40:11,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:11,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:40:11,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:11,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:11,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:11,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:11,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:11,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:40:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:11,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:11,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:11,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 04:40:11,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:11,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 04:40:11,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:11,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:11,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:11,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:40:11,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:11,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:40:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:11,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:11,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:11,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:40:11,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:11,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:40:11,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:11,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:11,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:11,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:40:11,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:11,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:40:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:11,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:11,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:11,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:40:11,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:11,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:40:11,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:11,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:11,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:11,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:40:11,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:11,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:40:11,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:11,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:11,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:11,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:40:11,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:11,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:40:11,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:11,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:40:11,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:40:11,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:40:11,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:11,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 04:40:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:11,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:11,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:11,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:40:11,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:11,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:40:11,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:11,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:11,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:40:11,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:11,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:11,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 04:40:11,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:11,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:11,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:11,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:40:11,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:11,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:40:11,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:11,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:11,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:40:11,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:11,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:11,835 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 04:40:11,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799471437] [2020-10-27 04:40:11,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:40:11,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:40:11,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948140503] [2020-10-27 04:40:11,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:40:11,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:40:11,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:40:11,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:40:11,842 INFO L87 Difference]: Start difference. First operand 1031 states and 1455 transitions. Second operand 9 states. [2020-10-27 04:40:12,192 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:40:15,199 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 04:40:15,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:40:15,680 INFO L93 Difference]: Finished difference Result 2869 states and 4171 transitions. [2020-10-27 04:40:15,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:40:15,685 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-10-27 04:40:15,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:40:15,698 INFO L225 Difference]: With dead ends: 2869 [2020-10-27 04:40:15,698 INFO L226 Difference]: Without dead ends: 2086 [2020-10-27 04:40:15,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:40:15,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2086 states. [2020-10-27 04:40:15,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2086 to 1827. [2020-10-27 04:40:15,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1827 states. [2020-10-27 04:40:15,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 2623 transitions. [2020-10-27 04:40:15,891 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 2623 transitions. Word has length 99 [2020-10-27 04:40:15,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:40:15,892 INFO L481 AbstractCegarLoop]: Abstraction has 1827 states and 2623 transitions. [2020-10-27 04:40:15,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:40:15,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 2623 transitions. [2020-10-27 04:40:15,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 04:40:15,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:40:15,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:40:15,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:40:15,897 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:40:15,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:40:15,898 INFO L82 PathProgramCache]: Analyzing trace with hash 601421531, now seen corresponding path program 1 times [2020-10-27 04:40:15,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:40:15,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982649831] [2020-10-27 04:40:15,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:40:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:15,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:16,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:16,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:16,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:16,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:16,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:20,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:20,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 04:40:20,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:40:20,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 04:40:20,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:20,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:40:20,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:40:20,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 04:40:20,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:21,319 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:40:21,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:40:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:21,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:21,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:21,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:40:21,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:21,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:40:21,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:21,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:21,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:21,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:21,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:21,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:40:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:21,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:21,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:21,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 04:40:21,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:21,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 04:40:21,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:21,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:40:21,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:21,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:40:21,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:21,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:40:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:21,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:21,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:21,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:40:21,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:21,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:40:21,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:21,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:21,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:21,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:40:21,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:21,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:40:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:21,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:21,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:21,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:40:21,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:21,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:40:21,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:21,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:21,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:21,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:40:21,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:21,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:40:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:21,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:21,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:21,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:40:21,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:21,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:40:21,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:21,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:21,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:40:21,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:40:21,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:21,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 04:40:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:21,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:21,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:21,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:40:21,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:21,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:40:21,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:21,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:21,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:40:21,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:21,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:40:21,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 04:40:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:21,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:21,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:21,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:40:21,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:21,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:40:21,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:21,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:21,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:40:21,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:21,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:21,680 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 04:40:21,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982649831] [2020-10-27 04:40:21,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:40:21,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:40:21,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120165987] [2020-10-27 04:40:21,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:40:21,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:40:21,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:40:21,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:40:21,690 INFO L87 Difference]: Start difference. First operand 1827 states and 2623 transitions. Second operand 9 states. [2020-10-27 04:40:22,029 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:40:22,352 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:40:22,728 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 04:40:23,087 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:40:24,000 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:40:26,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:40:26,857 INFO L93 Difference]: Finished difference Result 5681 states and 8219 transitions. [2020-10-27 04:40:26,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 04:40:26,858 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 101 [2020-10-27 04:40:26,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:40:26,904 INFO L225 Difference]: With dead ends: 5681 [2020-10-27 04:40:26,904 INFO L226 Difference]: Without dead ends: 3902 [2020-10-27 04:40:26,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:40:26,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3902 states. [2020-10-27 04:40:27,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3902 to 3547. [2020-10-27 04:40:27,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3547 states. [2020-10-27 04:40:27,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3547 states to 3547 states and 4995 transitions. [2020-10-27 04:40:27,220 INFO L78 Accepts]: Start accepts. Automaton has 3547 states and 4995 transitions. Word has length 101 [2020-10-27 04:40:27,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:40:27,220 INFO L481 AbstractCegarLoop]: Abstraction has 3547 states and 4995 transitions. [2020-10-27 04:40:27,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:40:27,220 INFO L276 IsEmpty]: Start isEmpty. Operand 3547 states and 4995 transitions. [2020-10-27 04:40:27,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-27 04:40:27,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:40:27,228 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:40:27,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:40:27,229 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:40:27,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:40:27,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1573243748, now seen corresponding path program 1 times [2020-10-27 04:40:27,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:40:27,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269239213] [2020-10-27 04:40:27,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:40:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:27,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:27,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:27,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:27,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:27,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:28,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:32,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:32,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 04:40:32,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:40:32,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 04:40:32,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:32,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:40:32,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:40:32,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 04:40:32,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:32,607 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:40:32,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:40:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:32,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:32,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:32,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:40:32,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:32,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:40:32,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:32,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:32,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:32,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:32,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:32,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:40:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:32,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:32,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:32,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 04:40:32,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:32,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 04:40:32,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:32,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:40:32,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:32,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:40:32,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:32,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:40:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:32,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:32,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:32,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:40:32,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:32,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:40:32,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:32,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:32,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:32,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:40:32,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:32,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:40:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:32,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:32,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:32,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:40:32,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:32,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:40:32,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:32,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:32,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:32,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:40:32,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:32,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:40:32,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:32,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:32,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:32,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:40:32,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:32,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:40:32,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:32,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:32,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:40:32,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:40:32,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:33,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 04:40:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:33,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:33,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:33,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:40:33,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:33,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:40:33,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:33,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:33,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:40:33,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:33,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:33,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 04:40:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:33,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:33,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:33,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:40:33,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:33,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:40:33,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:33,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:33,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:40:33,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:33,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:33,061 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 04:40:33,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269239213] [2020-10-27 04:40:33,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:40:33,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:40:33,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935436434] [2020-10-27 04:40:33,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:40:33,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:40:33,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:40:33,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:40:33,064 INFO L87 Difference]: Start difference. First operand 3547 states and 4995 transitions. Second operand 9 states. [2020-10-27 04:40:33,426 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:40:33,833 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 04:40:34,299 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-27 04:40:34,991 WARN L193 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-10-27 04:40:36,154 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:40:39,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:40:39,845 INFO L93 Difference]: Finished difference Result 12300 states and 17643 transitions. [2020-10-27 04:40:39,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:40:39,849 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-10-27 04:40:39,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:40:39,906 INFO L225 Difference]: With dead ends: 12300 [2020-10-27 04:40:39,906 INFO L226 Difference]: Without dead ends: 9107 [2020-10-27 04:40:39,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:40:39,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9107 states. [2020-10-27 04:40:40,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9107 to 8341. [2020-10-27 04:40:40,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8341 states. [2020-10-27 04:40:40,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8341 states to 8341 states and 11678 transitions. [2020-10-27 04:40:40,691 INFO L78 Accepts]: Start accepts. Automaton has 8341 states and 11678 transitions. Word has length 102 [2020-10-27 04:40:40,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:40:40,692 INFO L481 AbstractCegarLoop]: Abstraction has 8341 states and 11678 transitions. [2020-10-27 04:40:40,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:40:40,692 INFO L276 IsEmpty]: Start isEmpty. Operand 8341 states and 11678 transitions. [2020-10-27 04:40:40,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 04:40:40,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:40:40,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:40:40,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:40:40,710 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:40:40,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:40:40,710 INFO L82 PathProgramCache]: Analyzing trace with hash 645715254, now seen corresponding path program 1 times [2020-10-27 04:40:40,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:40:40,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229441349] [2020-10-27 04:40:40,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:40:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:40,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:40,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:40,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:41,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:41,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:42,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:45,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:45,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 04:40:45,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:40:45,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 04:40:45,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:45,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:40:45,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 04:40:45,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 04:40:45,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:46,095 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:40:46,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:40:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:46,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:46,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:46,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:40:46,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:46,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:40:46,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:46,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:46,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:46,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:46,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:46,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:40:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:46,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:46,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:46,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 04:40:46,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:46,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 04:40:46,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:46,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:46,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:46,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:40:46,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:46,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:40:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:46,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:46,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:46,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:40:46,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:46,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:40:46,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:46,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:46,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:46,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:40:46,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:46,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:40:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:46,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:46,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:46,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:40:46,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:46,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:40:46,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:46,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:46,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:46,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:40:46,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:46,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:40:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:46,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:46,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:46,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:40:46,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:46,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:40:46,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:46,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:46,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:46,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:40:46,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:46,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 04:40:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:46,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:46,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:46,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:40:46,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:46,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:40:46,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:46,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:40:46,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:40:46,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:40:46,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:46,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 04:40:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:46,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:46,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:46,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:40:46,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:46,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:40:46,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:46,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:46,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:40:46,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:46,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:46,400 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 04:40:46,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229441349] [2020-10-27 04:40:46,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:40:46,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:40:46,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881769802] [2020-10-27 04:40:46,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:40:46,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:40:46,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:40:46,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:40:46,403 INFO L87 Difference]: Start difference. First operand 8341 states and 11678 transitions. Second operand 9 states. [2020-10-27 04:40:46,824 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:40:50,578 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 04:40:51,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:40:51,140 INFO L93 Difference]: Finished difference Result 23389 states and 33148 transitions. [2020-10-27 04:40:51,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:40:51,141 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-27 04:40:51,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:40:51,222 INFO L225 Difference]: With dead ends: 23389 [2020-10-27 04:40:51,222 INFO L226 Difference]: Without dead ends: 16164 [2020-10-27 04:40:51,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:40:51,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16164 states. [2020-10-27 04:40:52,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16164 to 14517. [2020-10-27 04:40:52,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14517 states. [2020-10-27 04:40:52,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14517 states to 14517 states and 20326 transitions. [2020-10-27 04:40:52,654 INFO L78 Accepts]: Start accepts. Automaton has 14517 states and 20326 transitions. Word has length 103 [2020-10-27 04:40:52,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:40:52,655 INFO L481 AbstractCegarLoop]: Abstraction has 14517 states and 20326 transitions. [2020-10-27 04:40:52,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:40:52,655 INFO L276 IsEmpty]: Start isEmpty. Operand 14517 states and 20326 transitions. [2020-10-27 04:40:52,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-27 04:40:52,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:40:52,671 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] [2020-10-27 04:40:52,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:40:52,671 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:40:52,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:40:52,672 INFO L82 PathProgramCache]: Analyzing trace with hash -485385727, now seen corresponding path program 1 times [2020-10-27 04:40:52,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:40:52,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775107951] [2020-10-27 04:40:52,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:40:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:52,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:52,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:52,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:52,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:53,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:53,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:53,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:57,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:57,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 04:40:57,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:40:57,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 04:40:57,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:57,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:40:57,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:40:57,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 04:40:57,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:58,057 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:40:58,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:40:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:58,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:58,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:58,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:40:58,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:58,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:40:58,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:58,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:58,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:58,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:58,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:58,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:40:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:58,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:58,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:58,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 04:40:58,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:58,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 04:40:58,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:58,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:40:58,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:58,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:40:58,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:58,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:40:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:58,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:58,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:58,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:40:58,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:58,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:40:58,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:58,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:58,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:58,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:40:58,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:58,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:40:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:58,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:58,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:58,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:40:58,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:58,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:40:58,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:58,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:58,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:58,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:40:58,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:58,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:40:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:58,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:58,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:58,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:40:58,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:58,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:40:58,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:58,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:58,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:58,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:40:58,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:58,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 04:40:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:58,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:58,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:58,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:40:58,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:58,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:40:58,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:58,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:58,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:40:58,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:40:58,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:58,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 04:40:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:58,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:58,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:58,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:40:58,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:58,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:40:58,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:58,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:58,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:40:58,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:58,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:58,420 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 04:40:58,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775107951] [2020-10-27 04:40:58,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:40:58,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:40:58,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073104185] [2020-10-27 04:40:58,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:40:58,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:40:58,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:40:58,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:40:58,422 INFO L87 Difference]: Start difference. First operand 14517 states and 20326 transitions. Second operand 9 states. [2020-10-27 04:40:58,777 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:40:59,172 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:40:59,872 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-10-27 04:41:00,294 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:41:01,501 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:41:07,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:41:07,074 INFO L93 Difference]: Finished difference Result 47384 states and 67200 transitions. [2020-10-27 04:41:07,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:41:07,075 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 105 [2020-10-27 04:41:07,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:41:07,218 INFO L225 Difference]: With dead ends: 47384 [2020-10-27 04:41:07,218 INFO L226 Difference]: Without dead ends: 33716 [2020-10-27 04:41:07,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:41:07,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33716 states. [2020-10-27 04:41:10,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33716 to 31396. [2020-10-27 04:41:10,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31396 states. [2020-10-27 04:41:10,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31396 states to 31396 states and 43292 transitions. [2020-10-27 04:41:10,125 INFO L78 Accepts]: Start accepts. Automaton has 31396 states and 43292 transitions. Word has length 105 [2020-10-27 04:41:10,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:41:10,125 INFO L481 AbstractCegarLoop]: Abstraction has 31396 states and 43292 transitions. [2020-10-27 04:41:10,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:41:10,126 INFO L276 IsEmpty]: Start isEmpty. Operand 31396 states and 43292 transitions. [2020-10-27 04:41:10,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 04:41:10,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:41:10,157 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] [2020-10-27 04:41:10,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:41:10,158 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:41:10,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:41:10,158 INFO L82 PathProgramCache]: Analyzing trace with hash -643363183, now seen corresponding path program 1 times [2020-10-27 04:41:10,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:41:10,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467305498] [2020-10-27 04:41:10,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:41:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:10,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:10,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:10,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:10,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:11,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:11,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:11,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:15,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:15,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 04:41:15,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:41:15,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 04:41:15,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:15,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:41:15,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:41:15,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 04:41:15,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:15,544 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:41:15,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:41:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:15,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:15,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:15,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:41:15,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:15,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:41:15,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:15,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:15,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:15,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:15,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:15,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:41:15,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:15,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:15,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:15,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 04:41:15,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:15,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 04:41:15,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:15,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:41:15,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:15,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:41:15,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:15,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:41:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:15,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:15,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:15,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:41:15,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:15,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:41:15,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:15,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:15,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:15,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:41:15,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:15,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:41:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:15,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:15,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:15,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:41:15,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:15,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:41:15,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:15,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:15,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:15,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:41:15,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:15,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:41:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:15,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:15,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:15,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:41:15,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:15,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:41:15,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:15,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:15,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:15,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:41:15,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:15,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 04:41:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:15,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:15,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:15,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:41:15,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:15,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:41:15,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:15,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:15,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:41:15,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:41:15,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:15,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:41:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:15,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:15,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:15,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:41:15,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:15,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:41:15,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:15,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:15,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:41:15,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:15,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:15,855 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 04:41:15,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467305498] [2020-10-27 04:41:15,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:41:15,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:41:15,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498247609] [2020-10-27 04:41:15,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:41:15,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:41:15,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:41:15,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:41:15,858 INFO L87 Difference]: Start difference. First operand 31396 states and 43292 transitions. Second operand 9 states. [2020-10-27 04:41:16,239 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:41:16,592 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:41:17,055 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 04:41:17,412 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:41:18,305 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:41:24,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:41:24,273 INFO L93 Difference]: Finished difference Result 96165 states and 133410 transitions. [2020-10-27 04:41:24,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 04:41:24,274 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-27 04:41:24,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:41:24,545 INFO L225 Difference]: With dead ends: 96165 [2020-10-27 04:41:24,545 INFO L226 Difference]: Without dead ends: 65007 [2020-10-27 04:41:24,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:41:24,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65007 states. [2020-10-27 04:41:28,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65007 to 61264. [2020-10-27 04:41:28,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61264 states. [2020-10-27 04:41:29,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61264 states to 61264 states and 82632 transitions. [2020-10-27 04:41:29,322 INFO L78 Accepts]: Start accepts. Automaton has 61264 states and 82632 transitions. Word has length 106 [2020-10-27 04:41:29,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:41:29,322 INFO L481 AbstractCegarLoop]: Abstraction has 61264 states and 82632 transitions. [2020-10-27 04:41:29,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:41:29,322 INFO L276 IsEmpty]: Start isEmpty. Operand 61264 states and 82632 transitions. [2020-10-27 04:41:29,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-27 04:41:29,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:41:29,550 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] [2020-10-27 04:41:29,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:41:29,550 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:41:29,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:41:29,551 INFO L82 PathProgramCache]: Analyzing trace with hash -739302884, now seen corresponding path program 1 times [2020-10-27 04:41:29,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:41:29,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799759685] [2020-10-27 04:41:29,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:41:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:29,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:29,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:29,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:29,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:30,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:30,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:32,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:32,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:32,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:34,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:34,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 04:41:34,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 04:41:34,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 04:41:34,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:34,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:41:34,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:41:34,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 04:41:34,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:34,925 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:41:34,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:41:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:34,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:34,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:34,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:41:34,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:34,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:41:34,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:34,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:34,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:34,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:34,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:34,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:41:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:34,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:34,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:34,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:35,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:35,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 04:41:35,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:41:35,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-27 04:41:35,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:35,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:41:35,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:35,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:41:35,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:35,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:41:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:35,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:35,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:35,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:41:35,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:35,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:41:35,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:35,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:35,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:35,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:41:35,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:35,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:41:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:35,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:35,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:35,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:41:35,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:35,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:41:35,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:35,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:35,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:35,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:41:35,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:35,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 04:41:35,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:35,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:35,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:35,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:41:35,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:35,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:41:35,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:35,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:35,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:35,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:41:35,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:35,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 04:41:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:35,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:35,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:35,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:41:35,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:35,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:41:35,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:35,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:35,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:41:35,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:41:35,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:35,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 04:41:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:35,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:35,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:35,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:41:35,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:35,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:41:35,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:35,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:35,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:41:35,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:35,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:35,370 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 04:41:35,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799759685] [2020-10-27 04:41:35,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:41:35,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:41:35,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478500957] [2020-10-27 04:41:35,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:41:35,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:41:35,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:41:35,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:41:35,372 INFO L87 Difference]: Start difference. First operand 61264 states and 82632 transitions. Second operand 9 states. [2020-10-27 04:41:35,760 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:41:36,106 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:41:36,501 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:41:36,832 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 04:41:37,849 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 04:41:43,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:41:43,238 INFO L93 Difference]: Finished difference Result 92400 states and 124572 transitions. [2020-10-27 04:41:43,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 04:41:43,239 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 107 [2020-10-27 04:41:43,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:41:43,471 INFO L225 Difference]: With dead ends: 92400 [2020-10-27 04:41:43,471 INFO L226 Difference]: Without dead ends: 64983 [2020-10-27 04:41:43,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:41:43,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64983 states. [2020-10-27 04:41:47,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64983 to 55952. [2020-10-27 04:41:47,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55952 states. [2020-10-27 04:41:47,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55952 states to 55952 states and 75036 transitions. [2020-10-27 04:41:47,875 INFO L78 Accepts]: Start accepts. Automaton has 55952 states and 75036 transitions. Word has length 107 [2020-10-27 04:41:47,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:41:47,875 INFO L481 AbstractCegarLoop]: Abstraction has 55952 states and 75036 transitions. [2020-10-27 04:41:47,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:41:47,875 INFO L276 IsEmpty]: Start isEmpty. Operand 55952 states and 75036 transitions. [2020-10-27 04:41:47,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-27 04:41:47,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:41:47,921 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] [2020-10-27 04:41:47,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:41:47,922 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:41:47,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:41:47,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1276945165, now seen corresponding path program 1 times [2020-10-27 04:41:47,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:41:47,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789002974] [2020-10-27 04:41:47,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:41:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:47,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:48,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:48,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:48,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:48,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:48,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:49,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:52,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:52,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 04:41:52,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:41:52,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 04:41:52,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:52,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:41:52,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 04:41:52,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 04:41:52,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:53,288 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:41:53,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:41:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:53,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:53,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:53,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:41:53,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:53,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:41:53,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:53,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:53,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:53,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:53,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:53,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:41:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:53,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:53,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:53,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:53,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 04:41:53,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:41:53,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-27 04:41:53,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:53,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:41:53,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 04:41:53,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 04:41:53,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:53,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 04:41:53,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:53,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:53,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:53,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:41:53,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:53,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:41:53,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:53,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:53,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:41:53,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:53,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:53,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 04:41:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:53,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:53,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:53,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:41:53,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:53,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:41:53,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:53,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:53,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 04:41:53,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:53,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:53,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:41:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:53,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:53,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:53,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:41:53,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:53,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:41:53,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:53,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:53,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 04:41:53,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:53,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:53,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 04:41:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:53,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:53,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:53,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:41:53,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:53,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:41:53,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:53,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:53,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 04:41:53,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:53,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:53,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 04:41:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:53,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:53,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:53,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:41:53,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:53,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:41:53,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:53,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:53,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:41:53,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:53,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:53,648 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 04:41:53,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789002974] [2020-10-27 04:41:53,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:41:53,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 04:41:53,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855777697] [2020-10-27 04:41:53,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 04:41:53,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:41:53,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 04:41:53,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:41:53,650 INFO L87 Difference]: Start difference. First operand 55952 states and 75036 transitions. Second operand 8 states. [2020-10-27 04:41:54,251 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 04:41:54,605 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 04:41:57,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:41:57,896 INFO L93 Difference]: Finished difference Result 58553 states and 78346 transitions. [2020-10-27 04:41:57,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:41:57,897 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 107 [2020-10-27 04:41:57,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:41:58,039 INFO L225 Difference]: With dead ends: 58553 [2020-10-27 04:41:58,039 INFO L226 Difference]: Without dead ends: 38238 [2020-10-27 04:41:58,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:41:58,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38238 states. [2020-10-27 04:42:00,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38238 to 35627. [2020-10-27 04:42:00,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35627 states. [2020-10-27 04:42:00,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35627 states to 35627 states and 48075 transitions. [2020-10-27 04:42:00,647 INFO L78 Accepts]: Start accepts. Automaton has 35627 states and 48075 transitions. Word has length 107 [2020-10-27 04:42:00,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:42:00,648 INFO L481 AbstractCegarLoop]: Abstraction has 35627 states and 48075 transitions. [2020-10-27 04:42:00,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 04:42:00,648 INFO L276 IsEmpty]: Start isEmpty. Operand 35627 states and 48075 transitions. [2020-10-27 04:42:00,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-27 04:42:00,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:42:00,669 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] [2020-10-27 04:42:00,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:42:00,669 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:42:00,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:42:00,670 INFO L82 PathProgramCache]: Analyzing trace with hash -783182202, now seen corresponding path program 1 times [2020-10-27 04:42:00,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:42:00,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024352939] [2020-10-27 04:42:00,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:42:00,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:00,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:00,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:00,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:00,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:00,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:02,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:02,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:05,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:05,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 04:42:05,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:42:05,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 04:42:05,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:05,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:42:05,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 04:42:05,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 04:42:05,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:06,077 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:42:06,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:42:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:06,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:06,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:06,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:42:06,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:06,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:42:06,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:06,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:06,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:42:06,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:06,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:06,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:42:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:06,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:06,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:06,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 04:42:06,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:06,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 04:42:06,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:06,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:42:06,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:42:06,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 04:42:06,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:06,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:42:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:06,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:06,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:06,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:42:06,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:06,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:42:06,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:06,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:42:06,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:42:06,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:42:06,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:06,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:42:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:06,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:06,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:06,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:42:06,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:06,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:42:06,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:06,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:42:06,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:42:06,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:42:06,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:06,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:42:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:06,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:06,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:06,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:42:06,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:06,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:42:06,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:06,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:42:06,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:42:06,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:42:06,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:06,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 04:42:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:06,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:06,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:06,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:42:06,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:06,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:42:06,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:06,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:42:06,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:42:06,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:42:06,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:06,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 04:42:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:06,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:06,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:06,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:42:06,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:06,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:42:06,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:06,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:42:06,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:42:06,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:42:06,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:06,494 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 04:42:06,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024352939] [2020-10-27 04:42:06,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:42:06,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 04:42:06,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028472588] [2020-10-27 04:42:06,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:42:06,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:42:06,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:42:06,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:42:06,496 INFO L87 Difference]: Start difference. First operand 35627 states and 48075 transitions. Second operand 13 states. [2020-10-27 04:42:06,876 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:42:07,557 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:42:07,894 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 04:42:08,222 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-27 04:42:11,342 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:42:11,710 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 04:42:12,078 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 04:42:21,189 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-27 04:42:21,448 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2020-10-27 04:42:25,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:42:25,106 INFO L93 Difference]: Finished difference Result 189017 states and 263416 transitions. [2020-10-27 04:42:25,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-27 04:42:25,106 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 107 [2020-10-27 04:42:25,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:42:26,040 INFO L225 Difference]: With dead ends: 189017 [2020-10-27 04:42:26,040 INFO L226 Difference]: Without dead ends: 156231 [2020-10-27 04:42:26,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=630, Invalid=2126, Unknown=0, NotChecked=0, Total=2756 [2020-10-27 04:42:26,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156231 states. [2020-10-27 04:42:34,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156231 to 139565. [2020-10-27 04:42:34,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139565 states. [2020-10-27 04:42:34,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139565 states to 139565 states and 192000 transitions. [2020-10-27 04:42:34,978 INFO L78 Accepts]: Start accepts. Automaton has 139565 states and 192000 transitions. Word has length 107 [2020-10-27 04:42:34,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:42:34,978 INFO L481 AbstractCegarLoop]: Abstraction has 139565 states and 192000 transitions. [2020-10-27 04:42:34,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 04:42:34,979 INFO L276 IsEmpty]: Start isEmpty. Operand 139565 states and 192000 transitions. [2020-10-27 04:42:35,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-27 04:42:35,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:42:35,018 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] [2020-10-27 04:42:35,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 04:42:35,018 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:42:35,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:42:35,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1050843536, now seen corresponding path program 1 times [2020-10-27 04:42:35,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:42:35,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028468133] [2020-10-27 04:42:35,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:42:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:35,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:35,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:35,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:35,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:35,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:36,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:38,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:38,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:40,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:40,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 04:42:40,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:42:40,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 04:42:40,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:40,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:42:40,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 04:42:40,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 04:42:40,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:40,408 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:42:40,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:42:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:40,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:40,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:40,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:42:40,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:40,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:42:40,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:40,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:42:40,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:42:40,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:42:40,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:40,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:42:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:40,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:40,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:40,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 04:42:40,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:40,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 04:42:40,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:40,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:42:40,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:42:40,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 04:42:40,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:40,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:42:40,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:40,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:40,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:40,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:42:40,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:40,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:42:40,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:40,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:42:40,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:42:40,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:42:40,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:40,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:42:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:40,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:40,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:40,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:42:40,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:40,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:42:40,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:40,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:42:40,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:42:40,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:42:40,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:40,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:42:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:40,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:40,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:40,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:42:40,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:40,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:42:40,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:40,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:42:40,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:42:40,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:42:40,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:40,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 04:42:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:40,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:40,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:40,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:42:40,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:40,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:42:40,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:40,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:42:40,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:42:40,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:42:40,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:40,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 04:42:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:42:40,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:42:40,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:42:40,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:42:40,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:42:40,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:42:40,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:42:40,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:42:40,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:42:40,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:42:40,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:42:40,730 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 04:42:40,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028468133] [2020-10-27 04:42:40,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:42:40,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:42:40,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296977686] [2020-10-27 04:42:40,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:42:40,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:42:40,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:42:40,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:42:40,733 INFO L87 Difference]: Start difference. First operand 139565 states and 192000 transitions. Second operand 10 states. [2020-10-27 04:42:41,099 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 04:42:41,840 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:42:42,202 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74