/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:06:42,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:06:42,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:06:42,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:06:42,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:06:42,670 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:06:42,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:06:42,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:06:42,677 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:06:42,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:06:42,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:06:42,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:06:42,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:06:42,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:06:42,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:06:42,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:06:42,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:06:42,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:06:42,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:06:42,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:06:42,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:06:42,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:06:42,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:06:42,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:06:42,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:06:42,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:06:42,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:06:42,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:06:42,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:06:42,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:06:42,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:06:42,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:06:42,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:06:42,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:06:42,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:06:42,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:06:42,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:06:42,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:06:42,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:06:42,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:06:42,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:06:42,729 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 05:06:42,759 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:06:42,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:06:42,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:06:42,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:06:42,761 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:06:42,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:06:42,762 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:06:42,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:06:42,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:06:42,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:06:42,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:06:42,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:06:42,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:06:42,764 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:06:42,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:06:42,764 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:06:42,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:06:42,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:06:42,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:06:42,765 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:06:42,765 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:06:42,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:06:42,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:06:42,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:06:42,766 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:06:42,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:06:42,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:06:42,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:06:42,767 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:06:42,768 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:06:43,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:06:43,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:06:43,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:06:43,217 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:06:43,218 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:06:43,220 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-27 05:06:43,303 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c8f9274d/bf4081cffb2944e091de9a5e4ef5e959/FLAG08ad0d7f0 [2020-10-27 05:06:44,202 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:06:44,202 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-27 05:06:44,250 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c8f9274d/bf4081cffb2944e091de9a5e4ef5e959/FLAG08ad0d7f0 [2020-10-27 05:06:44,335 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c8f9274d/bf4081cffb2944e091de9a5e4ef5e959 [2020-10-27 05:06:44,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:06:44,349 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:06:44,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:06:44,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:06:44,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:06:44,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:06:44" (1/1) ... [2020-10-27 05:06:44,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5864e927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:44, skipping insertion in model container [2020-10-27 05:06:44,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:06:44" (1/1) ... [2020-10-27 05:06:44,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:06:44,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:06:46,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:06:46,318 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:06:47,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:06:47,190 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:06:47,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:47 WrapperNode [2020-10-27 05:06:47,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:06:47,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:06:47,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:06:47,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:06:47,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:47" (1/1) ... [2020-10-27 05:06:47,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:47" (1/1) ... [2020-10-27 05:06:47,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:47" (1/1) ... [2020-10-27 05:06:47,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:47" (1/1) ... [2020-10-27 05:06:47,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:47" (1/1) ... [2020-10-27 05:06:47,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:47" (1/1) ... [2020-10-27 05:06:47,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:47" (1/1) ... [2020-10-27 05:06:47,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:06:47,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:06:47,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:06:47,432 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:06:47,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:06:47,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:06:47,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:06:47,525 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:06:47,525 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:06:47,526 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:06:47,526 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:06:47,526 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:06:47,527 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:06:47,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:06:47,527 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:06:47,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:06:47,528 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:06:47,528 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:06:47,528 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:06:47,529 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:06:47,530 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:06:47,530 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:06:47,530 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:06:47,530 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:06:47,530 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 05:06:47,530 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:06:47,531 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:06:47,531 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:06:47,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:06:47,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:06:47,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:06:47,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:06:47,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:06:47,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:06:52,153 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:06:52,153 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:06:52,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:06:52 BoogieIcfgContainer [2020-10-27 05:06:52,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:06:52,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:06:52,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:06:52,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:06:52,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:06:44" (1/3) ... [2020-10-27 05:06:52,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e85bd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:06:52, skipping insertion in model container [2020-10-27 05:06:52,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:06:47" (2/3) ... [2020-10-27 05:06:52,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e85bd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:06:52, skipping insertion in model container [2020-10-27 05:06:52,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:06:52" (3/3) ... [2020-10-27 05:06:52,168 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-27 05:06:52,181 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:06:52,190 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:06:52,205 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:06:52,252 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:06:52,252 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:06:52,252 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:06:52,253 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:06:52,253 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:06:52,253 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:06:52,253 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:06:52,253 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:06:52,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states. [2020-10-27 05:06:52,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-10-27 05:06:52,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:06:52,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:06:52,359 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:06:52,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:06:52,368 INFO L82 PathProgramCache]: Analyzing trace with hash 75514757, now seen corresponding path program 1 times [2020-10-27 05:06:52,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:06:52,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95205327] [2020-10-27 05:06:52,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:06:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:54,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:56,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:57,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:58,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:58,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:59,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:59,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:59,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 473 [2020-10-27 05:06:59,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:06:59,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-27 05:06:59,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:59,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:06:59,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:06:59,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-27 05:06:59,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:07:01,071 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 421 [2020-10-27 05:07:01,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:07:01,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:01,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:01,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:01,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:07:01,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:07:01,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 05:07:01,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:01,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:07:01,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:07:01,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:07:01,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:01,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:07:01,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95205327] [2020-10-27 05:07:01,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:07:01,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:07:01,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802246225] [2020-10-27 05:07:01,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:07:01,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:07:01,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:07:01,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:07:01,886 INFO L87 Difference]: Start difference. First operand 1375 states. Second operand 5 states. [2020-10-27 05:07:18,463 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 427 [2020-10-27 05:07:21,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:07:21,486 INFO L93 Difference]: Finished difference Result 4054 states and 7341 transitions. [2020-10-27 05:07:21,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:07:21,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 465 [2020-10-27 05:07:21,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:07:21,531 INFO L225 Difference]: With dead ends: 4054 [2020-10-27 05:07:21,531 INFO L226 Difference]: Without dead ends: 2692 [2020-10-27 05:07:21,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:07:21,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2692 states. [2020-10-27 05:07:21,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 2672. [2020-10-27 05:07:21,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2672 states. [2020-10-27 05:07:21,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2672 states to 2672 states and 4392 transitions. [2020-10-27 05:07:21,783 INFO L78 Accepts]: Start accepts. Automaton has 2672 states and 4392 transitions. Word has length 465 [2020-10-27 05:07:21,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:07:21,785 INFO L481 AbstractCegarLoop]: Abstraction has 2672 states and 4392 transitions. [2020-10-27 05:07:21,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:07:21,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2672 states and 4392 transitions. [2020-10-27 05:07:21,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2020-10-27 05:07:21,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:07:21,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:07:21,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:07:21,803 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:07:21,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:07:21,804 INFO L82 PathProgramCache]: Analyzing trace with hash -488369247, now seen corresponding path program 1 times [2020-10-27 05:07:21,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:07:21,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283299022] [2020-10-27 05:07:21,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:07:21,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:22,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:22,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:22,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:22,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:23,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:23,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:24,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:24,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:24,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:25,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:25,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:25,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:26,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:26,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:27,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:27,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 475 [2020-10-27 05:07:27,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:07:27,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5109 [2020-10-27 05:07:27,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:27,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:07:27,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:07:27,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-27 05:07:27,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:28,698 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 421 [2020-10-27 05:07:28,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:07:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:28,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:28,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:28,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:07:28,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:07:28,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 05:07:28,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:28,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:07:28,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:07:28,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:07:28,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:07:29,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:07:29,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283299022] [2020-10-27 05:07:29,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:07:29,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:07:29,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485944237] [2020-10-27 05:07:29,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:07:29,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:07:29,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:07:29,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:07:29,308 INFO L87 Difference]: Start difference. First operand 2672 states and 4392 transitions. Second operand 5 states. [2020-10-27 05:07:45,123 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 427 [2020-10-27 05:07:48,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:07:48,147 INFO L93 Difference]: Finished difference Result 7867 states and 12920 transitions. [2020-10-27 05:07:48,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:07:48,148 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 467 [2020-10-27 05:07:48,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:07:48,179 INFO L225 Difference]: With dead ends: 7867 [2020-10-27 05:07:48,180 INFO L226 Difference]: Without dead ends: 5256 [2020-10-27 05:07:48,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:07:48,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5256 states. [2020-10-27 05:07:48,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5256 to 5201. [2020-10-27 05:07:48,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5201 states. [2020-10-27 05:07:48,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5201 states to 5201 states and 8505 transitions. [2020-10-27 05:07:48,430 INFO L78 Accepts]: Start accepts. Automaton has 5201 states and 8505 transitions. Word has length 467 [2020-10-27 05:07:48,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:07:48,432 INFO L481 AbstractCegarLoop]: Abstraction has 5201 states and 8505 transitions. [2020-10-27 05:07:48,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:07:48,432 INFO L276 IsEmpty]: Start isEmpty. Operand 5201 states and 8505 transitions. [2020-10-27 05:07:48,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2020-10-27 05:07:48,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:07:48,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:07:48,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:07:48,452 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:07:48,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:07:48,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1772737581, now seen corresponding path program 1 times [2020-10-27 05:07:48,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:07:48,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784647404] [2020-10-27 05:07:48,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:07:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:48,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:48,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:49,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:49,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:49,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:49,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:50,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:50,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:50,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:51,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:51,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:52,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:52,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:52,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:53,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:53,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:53,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:53,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:53,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 477 [2020-10-27 05:07:53,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 05:07:53,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5222 [2020-10-27 05:07:53,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:53,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:07:53,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:07:53,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-27 05:07:53,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:55,341 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 421 [2020-10-27 05:07:55,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:07:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:55,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:55,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:07:55,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:07:55,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:07:55,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 05:07:55,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:07:55,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:07:55,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:07:55,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:07:55,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:07:55,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:07:55,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784647404] [2020-10-27 05:07:55,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:07:55,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:07:55,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518320276] [2020-10-27 05:07:55,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:07:55,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:07:55,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:07:55,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:07:55,795 INFO L87 Difference]: Start difference. First operand 5201 states and 8505 transitions. Second operand 5 states. [2020-10-27 05:08:11,551 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification that was a NOOP. DAG size: 427 [2020-10-27 05:08:14,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:08:14,717 INFO L93 Difference]: Finished difference Result 15231 states and 24875 transitions. [2020-10-27 05:08:14,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:08:14,720 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 469 [2020-10-27 05:08:14,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:08:14,768 INFO L225 Difference]: With dead ends: 15231 [2020-10-27 05:08:14,768 INFO L226 Difference]: Without dead ends: 10266 [2020-10-27 05:08:14,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:08:14,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10266 states. [2020-10-27 05:08:15,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10266 to 10165. [2020-10-27 05:08:15,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10165 states. [2020-10-27 05:08:15,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10165 states to 10165 states and 16547 transitions. [2020-10-27 05:08:15,496 INFO L78 Accepts]: Start accepts. Automaton has 10165 states and 16547 transitions. Word has length 469 [2020-10-27 05:08:15,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:08:15,496 INFO L481 AbstractCegarLoop]: Abstraction has 10165 states and 16547 transitions. [2020-10-27 05:08:15,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:08:15,504 INFO L276 IsEmpty]: Start isEmpty. Operand 10165 states and 16547 transitions. [2020-10-27 05:08:15,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2020-10-27 05:08:15,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:08:15,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:08:15,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:08:15,539 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:08:15,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:08:15,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1570547156, now seen corresponding path program 1 times [2020-10-27 05:08:15,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:08:15,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220984563] [2020-10-27 05:08:15,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:08:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:15,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:15,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:16,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:16,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:16,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:16,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:16,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:17,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:17,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:18,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:18,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:19,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:19,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:19,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:20,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:20,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:20,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:20,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:20,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 480 [2020-10-27 05:08:20,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 05:08:20,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5104 [2020-10-27 05:08:20,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:20,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:08:20,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:08:20,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 215 [2020-10-27 05:08:20,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:22,265 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 421 [2020-10-27 05:08:22,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:08:22,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:22,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:22,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:22,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:08:22,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:08:22,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 05:08:22,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:22,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:08:22,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:08:22,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:08:22,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:22,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:08:22,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220984563] [2020-10-27 05:08:22,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:08:22,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:08:22,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609722805] [2020-10-27 05:08:22,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:08:22,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:08:22,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:08:22,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:08:22,660 INFO L87 Difference]: Start difference. First operand 10165 states and 16547 transitions. Second operand 5 states. [2020-10-27 05:08:38,483 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 427 [2020-10-27 05:08:41,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:08:41,549 INFO L93 Difference]: Finished difference Result 29782 states and 48396 transitions. [2020-10-27 05:08:41,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:08:41,550 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 472 [2020-10-27 05:08:41,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:08:41,618 INFO L225 Difference]: With dead ends: 29782 [2020-10-27 05:08:41,619 INFO L226 Difference]: Without dead ends: 20053 [2020-10-27 05:08:41,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:08:41,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20053 states. [2020-10-27 05:08:42,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20053 to 19968. [2020-10-27 05:08:42,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19968 states. [2020-10-27 05:08:42,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19968 states to 19968 states and 32324 transitions. [2020-10-27 05:08:42,891 INFO L78 Accepts]: Start accepts. Automaton has 19968 states and 32324 transitions. Word has length 472 [2020-10-27 05:08:42,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:08:42,891 INFO L481 AbstractCegarLoop]: Abstraction has 19968 states and 32324 transitions. [2020-10-27 05:08:42,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:08:42,891 INFO L276 IsEmpty]: Start isEmpty. Operand 19968 states and 32324 transitions. [2020-10-27 05:08:42,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2020-10-27 05:08:42,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:08:42,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:08:42,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:08:42,945 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:08:42,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:08:42,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1387823619, now seen corresponding path program 1 times [2020-10-27 05:08:42,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:08:42,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514053713] [2020-10-27 05:08:42,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:08:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:43,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:43,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:43,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:43,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:43,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:43,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:43,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:43,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:44,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:44,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:45,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:45,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:45,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:46,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:46,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:46,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:46,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:47,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:47,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:47,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:48,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:48,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 483 [2020-10-27 05:08:48,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-27 05:08:48,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-27 05:08:48,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:48,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:08:48,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:08:48,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-27 05:08:48,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:49,513 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 421 [2020-10-27 05:08:49,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:08:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:49,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:49,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:49,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:08:49,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:08:49,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 05:08:49,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:49,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:08:49,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:08:49,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:08:49,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:49,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:08:49,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514053713] [2020-10-27 05:08:49,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:08:49,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:08:49,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929024835] [2020-10-27 05:08:49,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:08:49,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:08:49,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:08:49,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:08:49,909 INFO L87 Difference]: Start difference. First operand 19968 states and 32324 transitions. Second operand 5 states. [2020-10-27 05:09:05,240 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 427 [2020-10-27 05:09:08,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:09:08,537 INFO L93 Difference]: Finished difference Result 59471 states and 96260 transitions. [2020-10-27 05:09:08,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:09:08,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 475 [2020-10-27 05:09:08,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:09:08,629 INFO L225 Difference]: With dead ends: 59471 [2020-10-27 05:09:08,629 INFO L226 Difference]: Without dead ends: 39525 [2020-10-27 05:09:08,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:09:08,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39525 states. [2020-10-27 05:09:10,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39525 to 39464. [2020-10-27 05:09:10,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39464 states. [2020-10-27 05:09:10,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39464 states to 39464 states and 63591 transitions. [2020-10-27 05:09:10,716 INFO L78 Accepts]: Start accepts. Automaton has 39464 states and 63591 transitions. Word has length 475 [2020-10-27 05:09:10,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:09:10,716 INFO L481 AbstractCegarLoop]: Abstraction has 39464 states and 63591 transitions. [2020-10-27 05:09:10,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:09:10,716 INFO L276 IsEmpty]: Start isEmpty. Operand 39464 states and 63591 transitions. [2020-10-27 05:09:10,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2020-10-27 05:09:10,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:09:10,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:09:10,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:09:10,787 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:09:10,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:09:10,788 INFO L82 PathProgramCache]: Analyzing trace with hash -2113870269, now seen corresponding path program 1 times [2020-10-27 05:09:10,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:09:10,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103653307] [2020-10-27 05:09:10,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:09:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:09:10,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:11,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:11,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:11,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:11,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:11,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:11,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:11,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:11,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:13,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:13,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:13,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:14,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:14,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:14,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:15,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:15,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:15,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:09:15,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 488 [2020-10-27 05:09:15,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 05:09:15,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5110 [2020-10-27 05:09:15,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:09:15,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:09:15,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:09:15,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-27 05:09:15,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:09:17,454 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 421 [2020-10-27 05:09:17,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:09:17,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:09:17,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:17,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:09:17,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:09:17,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:09:17,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 05:09:17,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:09:17,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:09:17,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:09:17,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:09:17,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:09:17,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:09:17,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103653307] [2020-10-27 05:09:17,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:09:17,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:09:17,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586368317] [2020-10-27 05:09:17,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:09:17,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:09:17,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:09:17,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:09:17,810 INFO L87 Difference]: Start difference. First operand 39464 states and 63591 transitions. Second operand 5 states. [2020-10-27 05:09:37,969 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification that was a NOOP. DAG size: 427 [2020-10-27 05:09:42,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:09:42,007 INFO L93 Difference]: Finished difference Result 116773 states and 188071 transitions. [2020-10-27 05:09:42,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:09:42,008 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 480 [2020-10-27 05:09:42,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:09:42,171 INFO L225 Difference]: With dead ends: 116773 [2020-10-27 05:09:42,171 INFO L226 Difference]: Without dead ends: 78020 [2020-10-27 05:09:42,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:09:42,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78020 states. [2020-10-27 05:09:46,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78020 to 77969. [2020-10-27 05:09:46,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77969 states. [2020-10-27 05:09:47,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77969 states to 77969 states and 125115 transitions. [2020-10-27 05:09:47,150 INFO L78 Accepts]: Start accepts. Automaton has 77969 states and 125115 transitions. Word has length 480 [2020-10-27 05:09:47,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:09:47,150 INFO L481 AbstractCegarLoop]: Abstraction has 77969 states and 125115 transitions. [2020-10-27 05:09:47,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:09:47,150 INFO L276 IsEmpty]: Start isEmpty. Operand 77969 states and 125115 transitions. [2020-10-27 05:09:47,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2020-10-27 05:09:47,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:09:47,407 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:09:47,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:09:47,407 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:09:47,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:09:47,408 INFO L82 PathProgramCache]: Analyzing trace with hash 96374049, now seen corresponding path program 1 times [2020-10-27 05:09:47,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:09:47,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471567773] [2020-10-27 05:09:47,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:09:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:09:47,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:47,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:47,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:47,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:48,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:48,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:48,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:48,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:48,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:48,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:48,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:48,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:48,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:52,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:09:52,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 491 [2020-10-27 05:09:52,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:09:52,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 05:09:52,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:09:52,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:09:52,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:09:52,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-27 05:09:52,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:09:53,986 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 421 [2020-10-27 05:09:53,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:09:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:09:54,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:54,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:09:54,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:09:54,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:09:54,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 05:09:54,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:09:54,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:09:54,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:09:54,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:09:54,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:09:54,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:09:54,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471567773] [2020-10-27 05:09:54,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:09:54,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:09:54,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148083392] [2020-10-27 05:09:54,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:09:54,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:09:54,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:09:54,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:09:54,363 INFO L87 Difference]: Start difference. First operand 77969 states and 125115 transitions. Second operand 5 states. [2020-10-27 05:10:19,595 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification that was a NOOP. DAG size: 427 [2020-10-27 05:10:25,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:10:25,003 INFO L93 Difference]: Finished difference Result 227734 states and 364553 transitions. [2020-10-27 05:10:25,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:10:25,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 483 [2020-10-27 05:10:25,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:10:25,382 INFO L225 Difference]: With dead ends: 227734 [2020-10-27 05:10:25,383 INFO L226 Difference]: Without dead ends: 153785 [2020-10-27 05:10:25,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:10:25,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153785 states.