/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 22:46:18,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 22:46:18,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 22:46:18,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 22:46:18,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 22:46:18,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 22:46:18,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 22:46:18,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 22:46:18,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 22:46:18,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 22:46:18,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 22:46:18,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 22:46:18,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 22:46:18,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 22:46:18,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 22:46:18,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 22:46:18,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 22:46:18,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 22:46:18,730 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 22:46:18,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 22:46:18,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 22:46:18,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 22:46:18,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 22:46:18,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 22:46:18,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 22:46:18,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 22:46:18,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 22:46:18,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 22:46:18,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 22:46:18,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 22:46:18,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 22:46:18,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 22:46:18,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 22:46:18,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 22:46:18,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 22:46:18,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 22:46:18,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 22:46:18,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 22:46:18,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 22:46:18,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 22:46:18,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 22:46:18,774 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 22:46:18,822 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 22:46:18,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 22:46:18,826 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 22:46:18,827 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 22:46:18,827 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 22:46:18,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 22:46:18,828 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 22:46:18,828 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 22:46:18,828 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 22:46:18,828 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 22:46:18,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 22:46:18,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 22:46:18,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 22:46:18,830 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 22:46:18,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 22:46:18,830 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 22:46:18,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 22:46:18,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 22:46:18,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 22:46:18,831 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 22:46:18,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 22:46:18,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 22:46:18,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 22:46:18,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 22:46:18,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 22:46:18,832 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 22:46:18,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 22:46:18,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 22:46:18,833 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 22:46:18,833 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 22:46:19,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 22:46:19,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 22:46:19,241 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 22:46:19,242 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 22:46:19,243 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 22:46:19,243 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c [2020-10-27 22:46:19,324 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab0ba8adc/58fcb9215ee24904a2c9d441cb00d80b/FLAGc790e5429 [2020-10-27 22:46:19,986 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 22:46:19,986 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c [2020-10-27 22:46:20,005 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab0ba8adc/58fcb9215ee24904a2c9d441cb00d80b/FLAGc790e5429 [2020-10-27 22:46:20,292 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab0ba8adc/58fcb9215ee24904a2c9d441cb00d80b [2020-10-27 22:46:20,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 22:46:20,302 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 22:46:20,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 22:46:20,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 22:46:20,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 22:46:20,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:46:20" (1/1) ... [2020-10-27 22:46:20,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b0b20a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:20, skipping insertion in model container [2020-10-27 22:46:20,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:46:20" (1/1) ... [2020-10-27 22:46:20,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 22:46:20,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 22:46:20,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:46:20,737 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 22:46:20,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:46:20,849 INFO L208 MainTranslator]: Completed translation [2020-10-27 22:46:20,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:20 WrapperNode [2020-10-27 22:46:20,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 22:46:20,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 22:46:20,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 22:46:20,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 22:46:20,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:20" (1/1) ... [2020-10-27 22:46:20,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:20" (1/1) ... [2020-10-27 22:46:20,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:20" (1/1) ... [2020-10-27 22:46:20,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:20" (1/1) ... [2020-10-27 22:46:20,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:20" (1/1) ... [2020-10-27 22:46:20,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:20" (1/1) ... [2020-10-27 22:46:20,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:20" (1/1) ... [2020-10-27 22:46:21,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 22:46:21,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 22:46:21,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 22:46:21,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 22:46:21,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:20" (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 22:46:21,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 22:46:21,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 22:46:21,098 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 22:46:21,098 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 22:46:21,098 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 22:46:21,099 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 22:46:21,099 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 22:46:21,099 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 22:46:21,100 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 22:46:21,100 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 22:46:21,101 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 22:46:21,101 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 22:46:21,101 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 22:46:21,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 22:46:21,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 22:46:21,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 22:46:21,102 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 22:46:21,103 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 22:46:21,103 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 22:46:21,103 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 22:46:21,103 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 22:46:21,103 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 22:46:21,103 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 22:46:21,104 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 22:46:21,104 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 22:46:21,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 22:46:21,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 22:46:21,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 22:46:21,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 22:46:21,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 22:46:21,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 22:46:22,014 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 22:46:22,015 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 22:46:22,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:46:22 BoogieIcfgContainer [2020-10-27 22:46:22,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 22:46:22,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 22:46:22,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 22:46:22,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 22:46:22,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 10:46:20" (1/3) ... [2020-10-27 22:46:22,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77fe2251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:46:22, skipping insertion in model container [2020-10-27 22:46:22,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:46:20" (2/3) ... [2020-10-27 22:46:22,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77fe2251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:46:22, skipping insertion in model container [2020-10-27 22:46:22,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:46:22" (3/3) ... [2020-10-27 22:46:22,029 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.BOUNDED-6.pals.c [2020-10-27 22:46:22,042 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 22:46:22,047 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 22:46:22,061 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 22:46:22,090 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 22:46:22,091 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 22:46:22,091 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 22:46:22,091 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 22:46:22,091 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 22:46:22,091 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 22:46:22,092 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 22:46:22,092 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 22:46:22,115 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states. [2020-10-27 22:46:22,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 22:46:22,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:46:22,127 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] [2020-10-27 22:46:22,128 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:46:22,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:46:22,135 INFO L82 PathProgramCache]: Analyzing trace with hash 916145648, now seen corresponding path program 1 times [2020-10-27 22:46:22,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:46:22,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599231641] [2020-10-27 22:46:22,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:46:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:22,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:22,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:22,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 22:46:22,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:22,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 549 [2020-10-27 22:46:22,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:22,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:22,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 22:46:22,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:22,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 22:46:23,355 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:46:23,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:46:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:23,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:23,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:23,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:46:23,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:23,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 22:46:23,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:23,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:23,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:23,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:23,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:23,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:46:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:23,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:23,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:23,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 22:46:23,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:23,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 22:46:23,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:23,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:23,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:23,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:23,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:23,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:46:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:23,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:23,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:23,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:23,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:23,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:46:23,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:23,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:23,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:46:23,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:23,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:23,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 22:46:23,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:23,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:23,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:23,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:23,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:23,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:46:23,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:23,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:23,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:46:23,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:23,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:23,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 22:46:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:23,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:23,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:23,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:23,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:23,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:46:23,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:23,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:23,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:46:23,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:23,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:23,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 22:46:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:23,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:23,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:23,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:23,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:23,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:46:23,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:23,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:23,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:46:23,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:23,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:23,617 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 22:46:23,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599231641] [2020-10-27 22:46:23,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:46:23,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 22:46:23,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338630218] [2020-10-27 22:46:23,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 22:46:23,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:46:23,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 22:46:23,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 22:46:23,643 INFO L87 Difference]: Start difference. First operand 159 states. Second operand 6 states. [2020-10-27 22:46:24,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:46:24,872 INFO L93 Difference]: Finished difference Result 263 states and 417 transitions. [2020-10-27 22:46:24,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 22:46:24,875 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-10-27 22:46:24,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:46:24,887 INFO L225 Difference]: With dead ends: 263 [2020-10-27 22:46:24,887 INFO L226 Difference]: Without dead ends: 163 [2020-10-27 22:46:24,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 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 22:46:24,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-27 22:46:24,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 151. [2020-10-27 22:46:24,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-27 22:46:25,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 244 transitions. [2020-10-27 22:46:25,002 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 244 transitions. Word has length 59 [2020-10-27 22:46:25,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:46:25,003 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 244 transitions. [2020-10-27 22:46:25,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 22:46:25,003 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 244 transitions. [2020-10-27 22:46:25,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 22:46:25,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:46:25,007 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] [2020-10-27 22:46:25,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 22:46:25,008 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:46:25,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:46:25,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1327837650, now seen corresponding path program 1 times [2020-10-27 22:46:25,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:46:25,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044795568] [2020-10-27 22:46:25,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:46:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:25,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:25,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:25,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 22:46:25,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:25,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 636 [2020-10-27 22:46:25,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:25,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:46:25,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 22:46:25,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:46:25,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:26,013 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:46:26,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:46:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:26,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:26,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:26,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:46:26,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:26,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:46:26,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:26,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:26,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:26,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:26,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:26,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:46:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:26,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:26,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:26,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 22:46:26,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:26,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 22:46:26,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:26,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:46:26,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:26,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:46:26,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:26,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 22:46:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:26,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:26,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:26,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:26,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:26,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:46:26,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:26,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:26,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:46:26,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:26,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:26,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 22:46:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:26,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:26,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:26,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:26,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:26,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:46:26,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:26,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:26,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:46:26,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:26,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:26,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 22:46:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:26,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:26,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:26,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:26,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:26,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:46:26,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:26,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:26,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:46:26,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:26,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:26,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 22:46:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:26,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:26,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:26,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:26,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:26,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:46:26,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:26,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:26,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:46:26,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:26,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:26,407 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 22:46:26,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044795568] [2020-10-27 22:46:26,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:46:26,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:46:26,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050750774] [2020-10-27 22:46:26,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:46:26,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:46:26,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:46:26,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:46:26,412 INFO L87 Difference]: Start difference. First operand 151 states and 244 transitions. Second operand 10 states. [2020-10-27 22:46:26,908 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:46:27,180 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 22:46:28,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:46:28,582 INFO L93 Difference]: Finished difference Result 264 states and 416 transitions. [2020-10-27 22:46:28,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 22:46:28,583 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-27 22:46:28,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:46:28,588 INFO L225 Difference]: With dead ends: 264 [2020-10-27 22:46:28,588 INFO L226 Difference]: Without dead ends: 172 [2020-10-27 22:46:28,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-27 22:46:28,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-27 22:46:28,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 151. [2020-10-27 22:46:28,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-27 22:46:28,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 217 transitions. [2020-10-27 22:46:28,625 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 217 transitions. Word has length 59 [2020-10-27 22:46:28,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:46:28,626 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 217 transitions. [2020-10-27 22:46:28,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:46:28,626 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 217 transitions. [2020-10-27 22:46:28,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 22:46:28,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:46:28,630 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] [2020-10-27 22:46:28,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 22:46:28,630 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:46:28,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:46:28,631 INFO L82 PathProgramCache]: Analyzing trace with hash 242313367, now seen corresponding path program 1 times [2020-10-27 22:46:28,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:46:28,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875601654] [2020-10-27 22:46:28,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:46:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:28,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:28,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:28,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:30,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:33,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:33,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 22:46:33,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:46:33,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 22:46:33,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:33,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:46:33,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 22:46:33,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 22:46:33,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:46:33,937 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:46:33,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:46:33,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:33,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:33,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:33,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:46:33,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:33,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:46:33,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:33,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:33,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:33,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:33,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:33,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:46:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:33,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:34,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:34,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:46:34,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:34,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 22:46:34,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:34,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:46:34,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:34,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 22:46:34,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:34,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:46:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:34,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:34,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:34,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:34,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:34,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:46:34,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:34,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:46:34,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:46:34,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:46:34,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:34,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:46:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:34,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:34,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:34,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:34,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:34,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:46:34,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:34,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:46:34,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:46:34,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:46:34,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:34,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 22:46:34,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:34,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:34,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:34,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:34,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:34,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:46:34,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:34,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:46:34,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:46:34,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:46:34,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:34,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:46:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:34,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:34,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:34,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:34,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:34,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 22:46:34,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:34,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:46:34,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:46:34,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:46:34,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:34,374 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 22:46:34,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875601654] [2020-10-27 22:46:34,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:46:34,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 22:46:34,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177698361] [2020-10-27 22:46:34,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 22:46:34,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:46:34,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 22:46:34,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:46:34,377 INFO L87 Difference]: Start difference. First operand 151 states and 217 transitions. Second operand 13 states. [2020-10-27 22:46:34,652 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:46:35,209 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:46:35,448 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:46:37,596 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:46:37,830 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 22:46:38,069 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 22:46:42,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:46:42,105 INFO L93 Difference]: Finished difference Result 864 states and 1333 transitions. [2020-10-27 22:46:42,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-27 22:46:42,105 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 85 [2020-10-27 22:46:42,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:46:42,122 INFO L225 Difference]: With dead ends: 864 [2020-10-27 22:46:42,123 INFO L226 Difference]: Without dead ends: 778 [2020-10-27 22:46:42,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=630, Invalid=2126, Unknown=0, NotChecked=0, Total=2756 [2020-10-27 22:46:42,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2020-10-27 22:46:42,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 640. [2020-10-27 22:46:42,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 640 states. [2020-10-27 22:46:42,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 978 transitions. [2020-10-27 22:46:42,240 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 978 transitions. Word has length 85 [2020-10-27 22:46:42,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:46:42,240 INFO L481 AbstractCegarLoop]: Abstraction has 640 states and 978 transitions. [2020-10-27 22:46:42,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 22:46:42,240 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 978 transitions. [2020-10-27 22:46:42,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 22:46:42,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:46:42,246 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] [2020-10-27 22:46:42,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 22:46:42,247 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:46:42,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:46:42,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1141940013, now seen corresponding path program 1 times [2020-10-27 22:46:42,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:46:42,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127102562] [2020-10-27 22:46:42,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:46:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:42,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:42,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:42,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:43,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:44,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:47,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:47,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 22:46:47,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:46:47,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 22:46:47,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:47,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:46:47,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 22:46:47,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 22:46:47,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:47,572 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:46:47,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:46:47,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:47,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:47,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:47,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:46:47,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:47,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:46:47,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:47,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:46:47,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:47,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:46:47,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:47,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:46:47,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:47,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:47,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:47,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:46:47,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:47,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 22:46:47,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:47,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:46:47,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:46:47,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 22:46:47,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:47,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:46:47,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:47,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:47,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:47,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:47,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:47,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:46:47,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:47,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:46:47,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:46:47,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:46:47,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 22:46:47,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:46:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:47,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:47,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:47,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:47,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:47,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:46:47,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:47,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:46:47,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:46:47,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:46:47,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:47,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 22:46:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:47,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:47,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:47,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:46:47,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:47,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:46:47,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:47,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:46:47,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:46:47,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:46:47,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:47,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:46:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:47,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:47,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:46:47,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:46:47,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:46:47,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:46:47,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:46:47,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:46:47,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:46:47,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:46:47,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:46:48,006 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 22:46:48,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127102562] [2020-10-27 22:46:48,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:46:48,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 22:46:48,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039708122] [2020-10-27 22:46:48,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 22:46:48,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:46:48,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 22:46:48,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-27 22:46:48,011 INFO L87 Difference]: Start difference. First operand 640 states and 978 transitions. Second operand 14 states. [2020-10-27 22:46:48,338 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 22:46:48,842 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:46:49,060 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:46:49,296 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:46:51,283 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 22:46:51,518 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:46:51,775 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 22:46:52,002 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 22:46:53,129 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-27 22:46:54,133 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-27 22:46:55,398 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 22:46:55,710 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:46:58,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:46:58,905 INFO L93 Difference]: Finished difference Result 3147 states and 4965 transitions. [2020-10-27 22:46:58,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-27 22:46:58,906 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 86 [2020-10-27 22:46:58,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:46:58,925 INFO L225 Difference]: With dead ends: 3147 [2020-10-27 22:46:58,925 INFO L226 Difference]: Without dead ends: 2572 [2020-10-27 22:46:58,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1585 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=953, Invalid=3877, Unknown=0, NotChecked=0, Total=4830 [2020-10-27 22:46:58,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2020-10-27 22:46:59,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 1776. [2020-10-27 22:46:59,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1776 states. [2020-10-27 22:46:59,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1776 states to 1776 states and 2777 transitions. [2020-10-27 22:46:59,166 INFO L78 Accepts]: Start accepts. Automaton has 1776 states and 2777 transitions. Word has length 86 [2020-10-27 22:46:59,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:46:59,168 INFO L481 AbstractCegarLoop]: Abstraction has 1776 states and 2777 transitions. [2020-10-27 22:46:59,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 22:46:59,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1776 states and 2777 transitions. [2020-10-27 22:46:59,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 22:46:59,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:46:59,176 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] [2020-10-27 22:46:59,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 22:46:59,176 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:46:59,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:46:59,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1588612416, now seen corresponding path program 1 times [2020-10-27 22:46:59,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:46:59,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577785373] [2020-10-27 22:46:59,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:46:59,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:46:59,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:59,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:46:59,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:00,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:00,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:04,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:04,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 22:47:04,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:47:04,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 22:47:04,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:04,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:47:04,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 22:47:04,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 22:47:04,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:04,473 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:47:04,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:04,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:04,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:04,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:04,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:04,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:04,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:47:04,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:04,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:04,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:04,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:04,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:04,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:47:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:04,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:04,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:04,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:47:04,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:04,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 22:47:04,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:04,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:47:04,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:04,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 22:47:04,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:04,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:47:04,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:04,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:04,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:04,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:04,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:04,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:47:04,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:04,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:04,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:04,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:47:04,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:04,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:47:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:04,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:04,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:04,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:04,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:04,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:47:04,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:04,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:04,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:47:04,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:47:04,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:04,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 22:47:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:04,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:04,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:04,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:04,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:04,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:47:04,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:04,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:04,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:04,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:47:04,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:04,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:47:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:04,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:04,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:04,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:47:04,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:04,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:47:04,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:04,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:04,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 22:47:04,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:47:04,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:04,826 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 22:47:04,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577785373] [2020-10-27 22:47:04,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:47:04,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:47:04,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314626702] [2020-10-27 22:47:04,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:47:04,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:47:04,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:47:04,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:47:04,828 INFO L87 Difference]: Start difference. First operand 1776 states and 2777 transitions. Second operand 10 states. [2020-10-27 22:47:05,065 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:47:05,581 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:47:06,259 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-10-27 22:47:06,718 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 22:47:07,242 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 180 [2020-10-27 22:47:07,481 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-10-27 22:47:09,297 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-10-27 22:47:09,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:47:09,713 INFO L93 Difference]: Finished difference Result 5273 states and 8248 transitions. [2020-10-27 22:47:09,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 22:47:09,715 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-10-27 22:47:09,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:47:09,743 INFO L225 Difference]: With dead ends: 5273 [2020-10-27 22:47:09,743 INFO L226 Difference]: Without dead ends: 3585 [2020-10-27 22:47:09,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2020-10-27 22:47:09,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3585 states. [2020-10-27 22:47:10,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3585 to 3099. [2020-10-27 22:47:10,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3099 states. [2020-10-27 22:47:10,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3099 states to 3099 states and 4842 transitions. [2020-10-27 22:47:10,043 INFO L78 Accepts]: Start accepts. Automaton has 3099 states and 4842 transitions. Word has length 87 [2020-10-27 22:47:10,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:47:10,044 INFO L481 AbstractCegarLoop]: Abstraction has 3099 states and 4842 transitions. [2020-10-27 22:47:10,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:47:10,044 INFO L276 IsEmpty]: Start isEmpty. Operand 3099 states and 4842 transitions. [2020-10-27 22:47:10,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 22:47:10,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:47:10,048 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] [2020-10-27 22:47:10,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 22:47:10,049 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:47:10,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:47:10,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1617601184, now seen corresponding path program 1 times [2020-10-27 22:47:10,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:47:10,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299412455] [2020-10-27 22:47:10,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:47:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:10,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:10,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:10,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:10,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:10,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:14,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:15,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:15,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 22:47:15,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:47:15,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 22:47:15,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:15,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:15,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-27 22:47:15,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:47:15,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:15,370 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:47:15,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:15,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:15,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:15,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:15,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:15,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:47:15,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:15,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:15,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:15,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:15,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:15,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:47:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:15,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:15,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:15,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:47:15,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:15,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 22:47:15,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:15,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:15,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:15,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 22:47:15,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:15,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:47:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:15,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:15,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:15,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:47:15,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:15,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 22:47:15,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:15,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:15,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:47:15,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:47:15,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:15,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 22:47:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:15,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:15,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:15,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:15,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:15,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:47:15,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:15,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:15,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:47:15,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:15,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:15,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 22:47:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:15,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:15,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:15,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:15,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:15,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:47:15,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:15,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:15,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:47:15,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:15,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:15,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 22:47:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:15,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:15,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:15,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:15,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:15,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:47:15,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:15,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:15,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:47:15,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:15,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:15,629 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 22:47:15,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299412455] [2020-10-27 22:47:15,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:47:15,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 22:47:15,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138189593] [2020-10-27 22:47:15,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:47:15,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:47:15,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:47:15,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:47:15,634 INFO L87 Difference]: Start difference. First operand 3099 states and 4842 transitions. Second operand 8 states. [2020-10-27 22:47:15,875 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:47:18,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:47:18,515 INFO L93 Difference]: Finished difference Result 9028 states and 14110 transitions. [2020-10-27 22:47:18,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 22:47:18,516 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-10-27 22:47:18,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:47:18,553 INFO L225 Difference]: With dead ends: 9028 [2020-10-27 22:47:18,553 INFO L226 Difference]: Without dead ends: 6005 [2020-10-27 22:47:18,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:47:18,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6005 states. [2020-10-27 22:47:19,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6005 to 5290. [2020-10-27 22:47:19,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5290 states. [2020-10-27 22:47:19,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5290 states to 5290 states and 8173 transitions. [2020-10-27 22:47:19,130 INFO L78 Accepts]: Start accepts. Automaton has 5290 states and 8173 transitions. Word has length 88 [2020-10-27 22:47:19,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:47:19,131 INFO L481 AbstractCegarLoop]: Abstraction has 5290 states and 8173 transitions. [2020-10-27 22:47:19,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:47:19,131 INFO L276 IsEmpty]: Start isEmpty. Operand 5290 states and 8173 transitions. [2020-10-27 22:47:19,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 22:47:19,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:47:19,139 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] [2020-10-27 22:47:19,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 22:47:19,139 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:47:19,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:47:19,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1265841252, now seen corresponding path program 1 times [2020-10-27 22:47:19,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:47:19,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342726292] [2020-10-27 22:47:19,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:47:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:19,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:19,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:19,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:19,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:20,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:24,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:24,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 22:47:24,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:47:24,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 22:47:24,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:24,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:47:24,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-27 22:47:24,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 22:47:24,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:24,465 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:47:24,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:24,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:24,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:24,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:24,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:24,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:47:24,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:24,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:24,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:24,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:24,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:47:24,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:47:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:24,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:24,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:24,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:47:24,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:24,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 22:47:24,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:24,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:47:24,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:24,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:47:24,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:24,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:47:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:24,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:24,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:24,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:24,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:24,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:47:24,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:24,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:24,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:24,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:47:24,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:24,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:47:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:24,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:24,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:24,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:24,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:24,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:47:24,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:24,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:24,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:24,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:47:24,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:24,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 22:47:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:24,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:24,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:24,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:24,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:24,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:47:24,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:24,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:24,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:47:24,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:47:24,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:24,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:47:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:24,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:24,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:24,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:47:24,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:24,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:47:24,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:24,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:24,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 22:47:24,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:47:24,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:24,842 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 22:47:24,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342726292] [2020-10-27 22:47:24,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:47:24,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:47:24,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129325785] [2020-10-27 22:47:24,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:47:24,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:47:24,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:47:24,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:47:24,848 INFO L87 Difference]: Start difference. First operand 5290 states and 8173 transitions. Second operand 10 states. [2020-10-27 22:47:25,091 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:47:25,595 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:47:26,784 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 22:47:27,251 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 179 [2020-10-27 22:47:28,709 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-27 22:47:29,274 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2020-10-27 22:47:30,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:47:30,161 INFO L93 Difference]: Finished difference Result 19830 states and 30569 transitions. [2020-10-27 22:47:30,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 22:47:30,162 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-10-27 22:47:30,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:47:30,256 INFO L225 Difference]: With dead ends: 19830 [2020-10-27 22:47:30,256 INFO L226 Difference]: Without dead ends: 14618 [2020-10-27 22:47:30,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2020-10-27 22:47:30,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14618 states. [2020-10-27 22:47:31,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14618 to 10648. [2020-10-27 22:47:31,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10648 states. [2020-10-27 22:47:31,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10648 states to 10648 states and 16441 transitions. [2020-10-27 22:47:31,503 INFO L78 Accepts]: Start accepts. Automaton has 10648 states and 16441 transitions. Word has length 88 [2020-10-27 22:47:31,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:47:31,504 INFO L481 AbstractCegarLoop]: Abstraction has 10648 states and 16441 transitions. [2020-10-27 22:47:31,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:47:31,504 INFO L276 IsEmpty]: Start isEmpty. Operand 10648 states and 16441 transitions. [2020-10-27 22:47:31,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 22:47:31,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:47:31,506 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] [2020-10-27 22:47:31,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 22:47:31,506 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:47:31,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:47:31,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1094066356, now seen corresponding path program 1 times [2020-10-27 22:47:31,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:47:31,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256927255] [2020-10-27 22:47:31,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:47:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:31,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:31,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:31,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:31,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:32,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:32,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:36,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:36,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:36,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 22:47:36,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:47:36,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 22:47:36,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:36,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:36,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 22:47:36,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:47:36,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:36,798 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:47:36,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:36,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:36,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:36,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:36,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:36,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:47:36,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:36,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:36,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:36,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:36,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:36,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:47:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:36,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:36,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:36,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:47:36,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:36,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 22:47:36,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:36,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:36,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:36,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 22:47:36,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:36,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:47:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:36,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:36,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:36,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:36,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:36,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:47:36,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:36,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:36,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:36,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:47:36,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:36,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:47:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:36,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:36,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:36,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:36,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:36,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:47:36,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:36,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:36,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:36,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:47:36,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:36,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 22:47:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:36,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:37,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:37,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:47:37,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:37,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 22:47:37,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:37,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:37,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:47:37,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:47:37,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:37,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 22:47:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:37,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:37,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:37,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:37,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:37,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:47:37,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:37,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:37,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:47:37,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:37,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:37,052 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 22:47:37,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256927255] [2020-10-27 22:47:37,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:47:37,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 22:47:37,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797382145] [2020-10-27 22:47:37,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:47:37,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:47:37,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:47:37,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:47:37,055 INFO L87 Difference]: Start difference. First operand 10648 states and 16441 transitions. Second operand 8 states. [2020-10-27 22:47:37,276 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:47:40,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:47:40,798 INFO L93 Difference]: Finished difference Result 31558 states and 48709 transitions. [2020-10-27 22:47:40,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 22:47:40,798 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-10-27 22:47:40,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:47:40,893 INFO L225 Difference]: With dead ends: 31558 [2020-10-27 22:47:40,894 INFO L226 Difference]: Without dead ends: 20988 [2020-10-27 22:47:40,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:47:40,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20988 states. [2020-10-27 22:47:42,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20988 to 18693. [2020-10-27 22:47:42,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18693 states. [2020-10-27 22:47:42,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18693 states to 18693 states and 28387 transitions. [2020-10-27 22:47:42,974 INFO L78 Accepts]: Start accepts. Automaton has 18693 states and 28387 transitions. Word has length 88 [2020-10-27 22:47:42,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:47:42,974 INFO L481 AbstractCegarLoop]: Abstraction has 18693 states and 28387 transitions. [2020-10-27 22:47:42,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:47:42,974 INFO L276 IsEmpty]: Start isEmpty. Operand 18693 states and 28387 transitions. [2020-10-27 22:47:42,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 22:47:42,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:47:42,976 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] [2020-10-27 22:47:42,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 22:47:42,976 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:47:42,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:47:42,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1924320073, now seen corresponding path program 1 times [2020-10-27 22:47:42,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:47:42,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912443950] [2020-10-27 22:47:42,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:47:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:43,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:43,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:43,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:43,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:43,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:43,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:47,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:48,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:48,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 22:47:48,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:47:48,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 22:47:48,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:48,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:48,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-27 22:47:48,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 22:47:48,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:48,232 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:47:48,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:47:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:48,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:48,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:48,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:47:48,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:48,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:47:48,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:48,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:48,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:48,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:48,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:48,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:47:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:48,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:48,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:48,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:47:48,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:48,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 22:47:48,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:48,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:48,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:48,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 22:47:48,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:48,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:47:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:48,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:48,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:48,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:48,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:48,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:47:48,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:48,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:47:48,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:47:48,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:47:48,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:48,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:47:48,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:48,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:48,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:48,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:47:48,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:48,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:47:48,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:48,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:47:48,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:47:48,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:47:48,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:48,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 22:47:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:48,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:48,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:48,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:48,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:48,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:47:48,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:48,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:48,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:47:48,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:48,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:48,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 22:47:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:48,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:48,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:47:48,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:47:48,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:47:48,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:47:48,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:47:48,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:47:48,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:47:48,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:47:48,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:47:48,498 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 22:47:48,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912443950] [2020-10-27 22:47:48,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:47:48,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 22:47:48,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104555386] [2020-10-27 22:47:48,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:47:48,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:47:48,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:47:48,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:47:48,501 INFO L87 Difference]: Start difference. First operand 18693 states and 28387 transitions. Second operand 8 states. [2020-10-27 22:47:48,730 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:47:53,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:47:53,323 INFO L93 Difference]: Finished difference Result 54364 states and 82575 transitions. [2020-10-27 22:47:53,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 22:47:53,323 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-10-27 22:47:53,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:47:53,472 INFO L225 Difference]: With dead ends: 54364 [2020-10-27 22:47:53,473 INFO L226 Difference]: Without dead ends: 35749 [2020-10-27 22:47:53,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:47:53,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35749 states. [2020-10-27 22:47:56,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35749 to 32362. [2020-10-27 22:47:56,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32362 states. [2020-10-27 22:47:56,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32362 states to 32362 states and 48105 transitions. [2020-10-27 22:47:56,878 INFO L78 Accepts]: Start accepts. Automaton has 32362 states and 48105 transitions. Word has length 88 [2020-10-27 22:47:56,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:47:56,879 INFO L481 AbstractCegarLoop]: Abstraction has 32362 states and 48105 transitions. [2020-10-27 22:47:56,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:47:56,879 INFO L276 IsEmpty]: Start isEmpty. Operand 32362 states and 48105 transitions. [2020-10-27 22:47:56,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 22:47:56,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:47:56,880 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] [2020-10-27 22:47:56,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 22:47:56,880 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:47:56,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:47:56,881 INFO L82 PathProgramCache]: Analyzing trace with hash -176075785, now seen corresponding path program 1 times [2020-10-27 22:47:56,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:47:56,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206423951] [2020-10-27 22:47:56,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:47:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:47:56,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:56,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:56,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:57,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:47:57,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:00,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:00,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 22:48:00,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:48:00,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3935 [2020-10-27 22:48:00,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:00,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:00,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 22:48:00,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 22:48:00,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:01,065 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:48:01,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:48:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:01,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:01,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:01,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:48:01,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:01,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:48:01,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:01,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:01,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:01,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:01,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:01,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:48:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:01,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:01,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:01,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:48:01,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:01,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 22:48:01,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:01,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:01,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:01,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 22:48:01,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:01,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:48:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:01,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:01,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:01,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:01,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:01,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:48:01,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:01,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:01,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:01,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:48:01,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:01,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:48:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:01,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:01,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:01,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:01,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:01,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:48:01,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:01,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:01,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:01,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:48:01,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:01,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 22:48:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:01,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:01,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:01,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:01,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:01,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:48:01,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:01,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:01,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:48:01,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:48:01,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:01,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 22:48:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:01,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:01,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:01,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 22:48:01,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:01,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:48:01,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:01,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:01,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 22:48:01,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:01,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:01,308 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 22:48:01,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206423951] [2020-10-27 22:48:01,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:48:01,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 22:48:01,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559393032] [2020-10-27 22:48:01,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:48:01,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:48:01,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:48:01,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:48:01,311 INFO L87 Difference]: Start difference. First operand 32362 states and 48105 transitions. Second operand 9 states. [2020-10-27 22:48:01,515 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:48:03,709 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:48:06,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:48:06,028 INFO L93 Difference]: Finished difference Result 73607 states and 109532 transitions. [2020-10-27 22:48:06,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 22:48:06,028 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-10-27 22:48:06,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:48:06,176 INFO L225 Difference]: With dead ends: 73607 [2020-10-27 22:48:06,176 INFO L226 Difference]: Without dead ends: 41323 [2020-10-27 22:48:06,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2020-10-27 22:48:06,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41323 states. [2020-10-27 22:48:09,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41323 to 36451. [2020-10-27 22:48:09,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36451 states. [2020-10-27 22:48:09,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36451 states to 36451 states and 54217 transitions. [2020-10-27 22:48:09,753 INFO L78 Accepts]: Start accepts. Automaton has 36451 states and 54217 transitions. Word has length 91 [2020-10-27 22:48:09,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:48:09,754 INFO L481 AbstractCegarLoop]: Abstraction has 36451 states and 54217 transitions. [2020-10-27 22:48:09,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:48:09,754 INFO L276 IsEmpty]: Start isEmpty. Operand 36451 states and 54217 transitions. [2020-10-27 22:48:09,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 22:48:09,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:48:09,755 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] [2020-10-27 22:48:09,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 22:48:09,755 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:48:09,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:48:09,756 INFO L82 PathProgramCache]: Analyzing trace with hash 443841640, now seen corresponding path program 1 times [2020-10-27 22:48:09,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:48:09,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386892868] [2020-10-27 22:48:09,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:48:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:09,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:09,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:09,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:09,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:10,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:10,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:14,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:14,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 22:48:14,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:48:14,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 22:48:14,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:14,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:14,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 22:48:14,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 22:48:14,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:15,007 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:48:15,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:48:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:15,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:15,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:15,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:48:15,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:15,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:48:15,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:15,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:15,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:15,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:15,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:15,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:48:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:15,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:15,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:15,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:48:15,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:15,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 22:48:15,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:15,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:15,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:15,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 22:48:15,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:15,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:48:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:15,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:15,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:15,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:15,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:15,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:48:15,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:15,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:15,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:15,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:48:15,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:15,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:48:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:15,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:15,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:15,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:15,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:15,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:48:15,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:15,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:15,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:48:15,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:48:15,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:15,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 22:48:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:15,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:15,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:15,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:48:15,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:15,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:48:15,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:15,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:15,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 22:48:15,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:15,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:15,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 22:48:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:15,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:15,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:15,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 22:48:15,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:15,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:48:15,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:15,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:15,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 22:48:15,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:15,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:15,228 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 22:48:15,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386892868] [2020-10-27 22:48:15,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:48:15,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 22:48:15,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405593323] [2020-10-27 22:48:15,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:48:15,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:48:15,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:48:15,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:48:15,231 INFO L87 Difference]: Start difference. First operand 36451 states and 54217 transitions. Second operand 9 states. [2020-10-27 22:48:15,457 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:48:17,503 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:48:20,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:48:20,373 INFO L93 Difference]: Finished difference Result 86129 states and 128397 transitions. [2020-10-27 22:48:20,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 22:48:20,374 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-10-27 22:48:20,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:48:20,581 INFO L225 Difference]: With dead ends: 86129 [2020-10-27 22:48:20,581 INFO L226 Difference]: Without dead ends: 49765 [2020-10-27 22:48:20,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-27 22:48:20,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49765 states. [2020-10-27 22:48:24,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49765 to 43757. [2020-10-27 22:48:24,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43757 states. [2020-10-27 22:48:24,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43757 states to 43757 states and 65184 transitions. [2020-10-27 22:48:24,834 INFO L78 Accepts]: Start accepts. Automaton has 43757 states and 65184 transitions. Word has length 93 [2020-10-27 22:48:24,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:48:24,834 INFO L481 AbstractCegarLoop]: Abstraction has 43757 states and 65184 transitions. [2020-10-27 22:48:24,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:48:24,834 INFO L276 IsEmpty]: Start isEmpty. Operand 43757 states and 65184 transitions. [2020-10-27 22:48:24,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 22:48:24,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:48:24,836 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 22:48:24,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 22:48:24,836 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:48:24,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:48:24,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1976309127, now seen corresponding path program 1 times [2020-10-27 22:48:24,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:48:24,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797676228] [2020-10-27 22:48:24,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:48:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:24,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:24,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:24,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:25,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:25,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:25,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:25,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:29,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:29,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 22:48:29,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:48:29,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 22:48:29,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:29,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:29,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 22:48:29,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 22:48:29,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:30,083 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:48:30,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:48:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:30,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:30,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:30,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:48:30,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:30,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:48:30,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:30,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:30,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:30,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:30,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:30,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:48:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:30,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:30,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:30,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:48:30,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:30,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:48:30,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:30,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:30,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:30,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 22:48:30,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:30,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:48:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:30,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:30,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:30,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:30,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:48:30,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:48:30,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:48:30,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:30,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:30,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:48:30,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:48:30,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:30,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 22:48:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:30,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:30,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:30,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:48:30,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:30,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:48:30,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:30,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:30,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:30,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 22:48:30,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:30,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 22:48:30,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:30,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:30,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:30,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:48:30,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:30,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:48:30,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:30,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:30,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:30,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 22:48:30,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:30,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 22:48:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:30,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:30,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:30,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:30,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 22:48:30,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:48:30,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:48:30,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:30,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:30,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:48:30,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:48:30,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:30,286 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 22:48:30,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797676228] [2020-10-27 22:48:30,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:48:30,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 22:48:30,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286748395] [2020-10-27 22:48:30,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:48:30,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:48:30,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:48:30,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:48:30,288 INFO L87 Difference]: Start difference. First operand 43757 states and 65184 transitions. Second operand 9 states. [2020-10-27 22:48:30,516 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:48:32,306 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 22:48:38,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:48:38,133 INFO L93 Difference]: Finished difference Result 120224 states and 181097 transitions. [2020-10-27 22:48:38,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 22:48:38,134 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-10-27 22:48:38,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:48:38,382 INFO L225 Difference]: With dead ends: 120224 [2020-10-27 22:48:38,382 INFO L226 Difference]: Without dead ends: 76542 [2020-10-27 22:48:38,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2020-10-27 22:48:38,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76542 states. [2020-10-27 22:48:44,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76542 to 69184. [2020-10-27 22:48:44,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69184 states. [2020-10-27 22:48:44,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69184 states to 69184 states and 101285 transitions. [2020-10-27 22:48:44,956 INFO L78 Accepts]: Start accepts. Automaton has 69184 states and 101285 transitions. Word has length 95 [2020-10-27 22:48:44,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:48:44,957 INFO L481 AbstractCegarLoop]: Abstraction has 69184 states and 101285 transitions. [2020-10-27 22:48:44,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:48:44,957 INFO L276 IsEmpty]: Start isEmpty. Operand 69184 states and 101285 transitions. [2020-10-27 22:48:44,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 22:48:44,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:48:44,958 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 22:48:44,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 22:48:44,959 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:48:44,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:48:44,959 INFO L82 PathProgramCache]: Analyzing trace with hash -117444016, now seen corresponding path program 1 times [2020-10-27 22:48:44,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:48:44,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372640224] [2020-10-27 22:48:44,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:48:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:45,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:45,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:45,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:45,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:45,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:45,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:47,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:49,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:49,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 22:48:49,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:48:49,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 22:48:49,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:49,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:48:49,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-27 22:48:49,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 22:48:49,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:50,217 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:48:50,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:48:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:50,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:50,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:50,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:48:50,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:50,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:48:50,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:50,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:48:50,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:50,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:48:50,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:50,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:48:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:50,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:50,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:50,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:48:50,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:50,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 22:48:50,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:50,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:50,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:48:50,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:48:50,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:50,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:48:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:50,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:50,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:50,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:48:50,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:50,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:48:50,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:50,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:50,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:48:50,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 22:48:50,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:50,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 22:48:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:50,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:50,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:50,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:48:50,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:50,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:48:50,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:50,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:50,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:48:50,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 22:48:50,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:50,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 22:48:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:50,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:50,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:50,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:48:50,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:50,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:48:50,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:50,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:48:50,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:48:50,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 22:48:50,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:50,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 22:48:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:48:50,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:48:50,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:48:50,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 22:48:50,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:48:50,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:48:50,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:48:50,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:48:50,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 22:48:50,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:48:50,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:48:50,531 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 22:48:50,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372640224] [2020-10-27 22:48:50,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:48:50,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 22:48:50,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049161978] [2020-10-27 22:48:50,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 22:48:50,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:48:50,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 22:48:50,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:48:50,533 INFO L87 Difference]: Start difference. First operand 69184 states and 101285 transitions. Second operand 13 states. [2020-10-27 22:48:50,774 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 22:48:51,366 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 22:48:51,602 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 22:48:52,721 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 22:48:53,528 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 22:48:54,719 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 22:49:10,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:49:10,006 INFO L93 Difference]: Finished difference Result 253426 states and 375886 transitions. [2020-10-27 22:49:10,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 22:49:10,008 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 99 [2020-10-27 22:49:10,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:49:10,984 INFO L225 Difference]: With dead ends: 253426 [2020-10-27 22:49:10,984 INFO L226 Difference]: Without dead ends: 184334 [2020-10-27 22:49:11,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=513, Invalid=1649, Unknown=0, NotChecked=0, Total=2162 [2020-10-27 22:49:11,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184334 states. [2020-10-27 22:49:25,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184334 to 166839. [2020-10-27 22:49:25,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166839 states. [2020-10-27 22:49:26,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166839 states to 166839 states and 245880 transitions. [2020-10-27 22:49:26,321 INFO L78 Accepts]: Start accepts. Automaton has 166839 states and 245880 transitions. Word has length 99 [2020-10-27 22:49:26,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:49:26,322 INFO L481 AbstractCegarLoop]: Abstraction has 166839 states and 245880 transitions. [2020-10-27 22:49:26,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 22:49:26,322 INFO L276 IsEmpty]: Start isEmpty. Operand 166839 states and 245880 transitions. [2020-10-27 22:49:26,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 22:49:26,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:49:26,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:49:26,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 22:49:26,323 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:49:26,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:49:26,324 INFO L82 PathProgramCache]: Analyzing trace with hash 459211816, now seen corresponding path program 1 times [2020-10-27 22:49:26,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:49:26,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20470226] [2020-10-27 22:49:26,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:49:26,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:26,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:26,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:26,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:26,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:26,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:27,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:31,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:31,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 22:49:31,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:49:31,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 22:49:31,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:31,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:49:31,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 22:49:31,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 22:49:31,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:31,603 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 22:49:31,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:49:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:31,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:31,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:31,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:49:31,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:31,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:49:31,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:31,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:31,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:31,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:31,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:31,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:49:31,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:31,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:31,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:31,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:49:31,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:31,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 22:49:31,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:31,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:49:31,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:49:31,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 22:49:31,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:31,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 22:49:31,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:31,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:31,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:31,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:49:31,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:31,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:49:31,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:31,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:49:31,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 22:49:31,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:49:31,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:31,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 22:49:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:31,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:31,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:31,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:49:31,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:31,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:49:31,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:31,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:31,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 22:49:31,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:31,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:31,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 22:49:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:31,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:31,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:31,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:49:31,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:31,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:49:31,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:31,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:31,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 22:49:31,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:31,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:31,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 22:49:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:49:31,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:49:31,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:49:31,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 22:49:31,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:49:31,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:49:31,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:49:31,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:49:31,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:49:31,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:49:31,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:49:31,877 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 22:49:31,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20470226] [2020-10-27 22:49:31,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:49:31,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 22:49:31,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544234144] [2020-10-27 22:49:31,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:49:31,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:49:31,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:49:31,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:49:31,879 INFO L87 Difference]: Start difference. First operand 166839 states and 245880 transitions. Second operand 9 states. [2020-10-27 22:49:32,143 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 22:49:32,424 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 22:49:32,708 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 22:49:33,546 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 183 [2020-10-27 22:49:34,191 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 181