/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.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:58:54,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:58:54,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:58:54,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:58:54,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:58:54,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:58:54,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:58:54,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:58:54,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:58:54,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:58:54,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:58:54,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:58:54,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:58:54,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:58:54,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:58:54,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:58:54,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:58:54,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:58:54,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:58:54,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:58:54,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:58:54,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:58:54,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:58:54,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:58:54,767 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:58:54,768 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:58:54,768 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:58:54,769 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:58:54,770 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:58:54,771 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:58:54,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:58:54,772 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:58:54,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:58:54,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:58:54,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:58:54,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:58:54,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:58:54,777 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:58:54,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:58:54,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:58:54,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:58:54,780 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 04:58:54,807 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:58:54,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:58:54,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:58:54,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:58:54,809 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:58:54,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:58:54,810 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:58:54,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:58:54,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:58:54,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:58:54,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:58:54,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:58:54,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:58:54,811 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:58:54,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:58:54,812 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:58:54,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:58:54,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:58:54,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:58:54,813 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:58:54,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:58:54,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:58:54,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:58:54,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:58:54,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:58:54,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:58:54,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:58:54,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:58:54,814 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:58:54,814 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:58:55,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:58:55,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:58:55,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:58:55,335 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:58:55,335 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:58:55,338 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 04:58:55,424 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d56d88f52/031de981e7f04520b210c259bf7d79f3/FLAGf4cc87b14 [2020-10-27 04:58:56,269 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:58:56,270 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 04:58:56,287 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d56d88f52/031de981e7f04520b210c259bf7d79f3/FLAGf4cc87b14 [2020-10-27 04:58:56,503 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d56d88f52/031de981e7f04520b210c259bf7d79f3 [2020-10-27 04:58:56,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:58:56,513 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:58:56,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:58:56,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:58:56,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:58:56,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:58:56" (1/1) ... [2020-10-27 04:58:56,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4980f8ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:58:56, skipping insertion in model container [2020-10-27 04:58:56,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:58:56" (1/1) ... [2020-10-27 04:58:56,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:58:56,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:58:57,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:58:57,039 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:58:57,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:58:57,233 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:58:57,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:58:57 WrapperNode [2020-10-27 04:58:57,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:58:57,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:58:57,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:58:57,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:58:57,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:58:57" (1/1) ... [2020-10-27 04:58:57,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:58:57" (1/1) ... [2020-10-27 04:58:57,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:58:57" (1/1) ... [2020-10-27 04:58:57,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:58:57" (1/1) ... [2020-10-27 04:58:57,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:58:57" (1/1) ... [2020-10-27 04:58:57,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:58:57" (1/1) ... [2020-10-27 04:58:57,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:58:57" (1/1) ... [2020-10-27 04:58:57,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:58:57,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:58:57,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:58:57,359 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:58:57,360 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:58:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:58:57,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:58:57,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:58:57,443 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:58:57,443 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:58:57,443 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:58:57,444 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:58:57,445 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:58:57,445 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:58:57,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:58:57,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:58:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 04:58:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:58:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:58:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:58:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:58:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:58:57,449 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:58:57,449 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:58:57,449 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:58:57,449 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 04:58:57,449 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:58:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:58:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:58:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:58:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:58:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:58:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:58:57,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:58:57,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:58:58,883 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:58:58,884 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 04:58:58,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:58:58 BoogieIcfgContainer [2020-10-27 04:58:58,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:58:58,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:58:58,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:58:58,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:58:58,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:58:56" (1/3) ... [2020-10-27 04:58:58,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225587d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:58:58, skipping insertion in model container [2020-10-27 04:58:58,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:58:57" (2/3) ... [2020-10-27 04:58:58,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225587d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:58:58, skipping insertion in model container [2020-10-27 04:58:58,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:58:58" (3/3) ... [2020-10-27 04:58:58,896 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-27 04:58:58,908 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:58:58,913 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:58:58,927 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:58:58,957 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:58:58,958 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:58:58,958 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:58:58,958 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:58:58,958 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:58:58,958 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:58:58,958 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:58:58,958 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:58:58,983 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states. [2020-10-27 04:58:58,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 04:58:58,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:58:59,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:58:59,000 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:58:59,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:58:59,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1187780318, now seen corresponding path program 1 times [2020-10-27 04:58:59,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:58:59,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171084581] [2020-10-27 04:58:59,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:58:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:59,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:59,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:00,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:01,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:01,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:04,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:04,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 04:59:04,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:59:04,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 04:59:04,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:04,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:59:04,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 04:59:04,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:59:04,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 04:59:05,458 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 04:59:05,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:59:05,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:05,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:05,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:05,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:59:05,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:59:05,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 04:59:05,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:59:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:59:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:59:05,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:05,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:59:05,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171084581] [2020-10-27 04:59:05,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:59:05,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 04:59:05,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47375867] [2020-10-27 04:59:05,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 04:59:05,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:59:05,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 04:59:05,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 04:59:05,603 INFO L87 Difference]: Start difference. First operand 323 states. Second operand 4 states. [2020-10-27 04:59:06,441 WARN L193 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 04:59:08,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:59:08,809 INFO L93 Difference]: Finished difference Result 590 states and 1012 transitions. [2020-10-27 04:59:08,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:59:08,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-27 04:59:08,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:59:08,831 INFO L225 Difference]: With dead ends: 590 [2020-10-27 04:59:08,832 INFO L226 Difference]: Without dead ends: 440 [2020-10-27 04:59:08,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:59:08,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2020-10-27 04:59:08,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 436. [2020-10-27 04:59:08,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2020-10-27 04:59:08,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 727 transitions. [2020-10-27 04:59:08,961 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 727 transitions. Word has length 103 [2020-10-27 04:59:08,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:59:08,962 INFO L481 AbstractCegarLoop]: Abstraction has 436 states and 727 transitions. [2020-10-27 04:59:08,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 04:59:08,962 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 727 transitions. [2020-10-27 04:59:08,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 04:59:08,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:59:08,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:59:08,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:59:08,969 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:59:08,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:59:08,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1396254579, now seen corresponding path program 1 times [2020-10-27 04:59:08,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:59:08,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024987540] [2020-10-27 04:59:08,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:59:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:09,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:09,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:09,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:09,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:09,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:14,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:14,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 04:59:14,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:59:14,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-27 04:59:14,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:59:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:59:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 04:59:14,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-27 04:59:14,791 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 04:59:14,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:59:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:14,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:14,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:14,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:59:14,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:59:14,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 04:59:14,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:14,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:59:14,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:59:14,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:59:14,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:14,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:59:14,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024987540] [2020-10-27 04:59:14,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:59:14,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:59:14,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68145547] [2020-10-27 04:59:14,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:59:14,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:59:14,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:59:14,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:59:14,919 INFO L87 Difference]: Start difference. First operand 436 states and 727 transitions. Second operand 5 states. [2020-10-27 04:59:18,298 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 04:59:18,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:59:18,427 INFO L93 Difference]: Finished difference Result 1270 states and 2122 transitions. [2020-10-27 04:59:18,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:59:18,428 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-27 04:59:18,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:59:18,441 INFO L225 Difference]: With dead ends: 1270 [2020-10-27 04:59:18,441 INFO L226 Difference]: Without dead ends: 849 [2020-10-27 04:59:18,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:59:18,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2020-10-27 04:59:18,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 846. [2020-10-27 04:59:18,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 846 states. [2020-10-27 04:59:18,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1406 transitions. [2020-10-27 04:59:18,545 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1406 transitions. Word has length 106 [2020-10-27 04:59:18,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:59:18,546 INFO L481 AbstractCegarLoop]: Abstraction has 846 states and 1406 transitions. [2020-10-27 04:59:18,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:59:18,546 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1406 transitions. [2020-10-27 04:59:18,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-27 04:59:18,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:59:18,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:59:18,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:59:18,563 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:59:18,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:59:18,564 INFO L82 PathProgramCache]: Analyzing trace with hash 26032497, now seen corresponding path program 1 times [2020-10-27 04:59:18,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:59:18,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862916921] [2020-10-27 04:59:18,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:59:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:18,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:18,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:18,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:18,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:19,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:20,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:20,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:23,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:23,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 04:59:23,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:59:23,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-27 04:59:23,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:23,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:59:23,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:59:23,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 04:59:23,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:24,360 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 04:59:24,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:59:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:24,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:24,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:24,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:59:24,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:59:24,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 04:59:24,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:24,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:59:24,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:59:24,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:59:24,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:24,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:59:24,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862916921] [2020-10-27 04:59:24,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:59:24,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:59:24,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069144773] [2020-10-27 04:59:24,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:59:24,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:59:24,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:59:24,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:59:24,451 INFO L87 Difference]: Start difference. First operand 846 states and 1406 transitions. Second operand 5 states. [2020-10-27 04:59:27,302 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 04:59:27,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:59:27,464 INFO L93 Difference]: Finished difference Result 2473 states and 4114 transitions. [2020-10-27 04:59:27,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:59:27,464 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-27 04:59:27,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:59:27,479 INFO L225 Difference]: With dead ends: 2473 [2020-10-27 04:59:27,480 INFO L226 Difference]: Without dead ends: 1649 [2020-10-27 04:59:27,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:59:27,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2020-10-27 04:59:27,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1646. [2020-10-27 04:59:27,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1646 states. [2020-10-27 04:59:27,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 2721 transitions. [2020-10-27 04:59:27,587 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 2721 transitions. Word has length 108 [2020-10-27 04:59:27,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:59:27,587 INFO L481 AbstractCegarLoop]: Abstraction has 1646 states and 2721 transitions. [2020-10-27 04:59:27,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:59:27,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 2721 transitions. [2020-10-27 04:59:27,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-27 04:59:27,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:59:27,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:59:27,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:59:27,593 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:59:27,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:59:27,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1241145403, now seen corresponding path program 1 times [2020-10-27 04:59:27,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:59:27,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410181751] [2020-10-27 04:59:27,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:59:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:27,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:27,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:27,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:27,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:28,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:28,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:32,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:32,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 04:59:32,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:59:32,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 04:59:32,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:32,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:59:32,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:59:32,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 04:59:32,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:33,403 WARN L193 SmtUtils]: Spent 646.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 04:59:33,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:59:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:33,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:33,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:33,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:59:33,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:59:33,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:59:33,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:33,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:59:33,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:59:33,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:59:33,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:33,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:59:33,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410181751] [2020-10-27 04:59:33,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:59:33,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:59:33,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211357544] [2020-10-27 04:59:33,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:59:33,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:59:33,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:59:33,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:59:33,523 INFO L87 Difference]: Start difference. First operand 1646 states and 2721 transitions. Second operand 5 states. [2020-10-27 04:59:36,380 WARN L193 SmtUtils]: Spent 562.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 04:59:36,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:59:36,536 INFO L93 Difference]: Finished difference Result 4680 states and 7727 transitions. [2020-10-27 04:59:36,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:59:36,537 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-27 04:59:36,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:59:36,554 INFO L225 Difference]: With dead ends: 4680 [2020-10-27 04:59:36,556 INFO L226 Difference]: Without dead ends: 3157 [2020-10-27 04:59:36,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:59:36,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2020-10-27 04:59:36,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 3154. [2020-10-27 04:59:36,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3154 states. [2020-10-27 04:59:36,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3154 states to 3154 states and 5177 transitions. [2020-10-27 04:59:36,822 INFO L78 Accepts]: Start accepts. Automaton has 3154 states and 5177 transitions. Word has length 108 [2020-10-27 04:59:36,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:59:36,822 INFO L481 AbstractCegarLoop]: Abstraction has 3154 states and 5177 transitions. [2020-10-27 04:59:36,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:59:36,822 INFO L276 IsEmpty]: Start isEmpty. Operand 3154 states and 5177 transitions. [2020-10-27 04:59:36,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 04:59:36,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:59:36,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:59:36,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:59:36,836 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:59:36,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:59:36,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1411053350, now seen corresponding path program 1 times [2020-10-27 04:59:36,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:59:36,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086109466] [2020-10-27 04:59:36,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:59:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:36,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:36,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:37,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:37,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:37,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:39,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:39,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:41,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:41,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 04:59:41,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:59:41,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 04:59:41,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:41,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:59:41,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:59:41,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 04:59:41,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:42,512 WARN L193 SmtUtils]: Spent 527.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 04:59:42,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:59:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:42,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:42,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:42,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:59:42,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:59:42,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 04:59:42,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:42,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:59:42,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:59:42,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:59:42,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:42,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:59:42,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086109466] [2020-10-27 04:59:42,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:59:42,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:59:42,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348194011] [2020-10-27 04:59:42,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:59:42,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:59:42,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:59:42,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:59:42,608 INFO L87 Difference]: Start difference. First operand 3154 states and 5177 transitions. Second operand 5 states. [2020-10-27 04:59:45,410 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 04:59:45,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:59:45,566 INFO L93 Difference]: Finished difference Result 9164 states and 15035 transitions. [2020-10-27 04:59:45,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:59:45,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-27 04:59:45,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:59:45,600 INFO L225 Difference]: With dead ends: 9164 [2020-10-27 04:59:45,600 INFO L226 Difference]: Without dead ends: 6133 [2020-10-27 04:59:45,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:59:45,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6133 states. [2020-10-27 04:59:45,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6133 to 6130. [2020-10-27 04:59:45,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6130 states. [2020-10-27 04:59:46,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6130 states to 6130 states and 10001 transitions. [2020-10-27 04:59:46,021 INFO L78 Accepts]: Start accepts. Automaton has 6130 states and 10001 transitions. Word has length 109 [2020-10-27 04:59:46,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:59:46,022 INFO L481 AbstractCegarLoop]: Abstraction has 6130 states and 10001 transitions. [2020-10-27 04:59:46,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:59:46,022 INFO L276 IsEmpty]: Start isEmpty. Operand 6130 states and 10001 transitions. [2020-10-27 04:59:46,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-27 04:59:46,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:59:46,036 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] [2020-10-27 04:59:46,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:59:46,036 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:59:46,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:59:46,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1723696660, now seen corresponding path program 1 times [2020-10-27 04:59:46,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:59:46,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658943989] [2020-10-27 04:59:46,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:59:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:46,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:46,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:46,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:46,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:46,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:46,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:46,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:47,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:47,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:51,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:51,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 04:59:51,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 04:59:51,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 04:59:51,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:51,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:59:51,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:59:51,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 04:59:51,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:51,866 WARN L193 SmtUtils]: Spent 578.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 04:59:51,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:59:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:51,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:51,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:51,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:59:51,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:59:51,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:59:51,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:51,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:59:51,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:59:51,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:59:51,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:51,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:59:51,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658943989] [2020-10-27 04:59:51,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:59:51,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:59:51,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595512081] [2020-10-27 04:59:51,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:59:51,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:59:51,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:59:51,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:59:51,951 INFO L87 Difference]: Start difference. First operand 6130 states and 10001 transitions. Second operand 5 states. [2020-10-27 04:59:55,274 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 04:59:55,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:59:55,530 INFO L93 Difference]: Finished difference Result 17793 states and 29000 transitions. [2020-10-27 04:59:55,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:59:55,531 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-27 04:59:55,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:59:55,592 INFO L225 Difference]: With dead ends: 17793 [2020-10-27 04:59:55,592 INFO L226 Difference]: Without dead ends: 12070 [2020-10-27 04:59:55,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:59:55,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12070 states. [2020-10-27 04:59:56,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12070 to 12067. [2020-10-27 04:59:56,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12067 states. [2020-10-27 04:59:56,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12067 states to 12067 states and 19572 transitions. [2020-10-27 04:59:56,624 INFO L78 Accepts]: Start accepts. Automaton has 12067 states and 19572 transitions. Word has length 110 [2020-10-27 04:59:56,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:59:56,624 INFO L481 AbstractCegarLoop]: Abstraction has 12067 states and 19572 transitions. [2020-10-27 04:59:56,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:59:56,624 INFO L276 IsEmpty]: Start isEmpty. Operand 12067 states and 19572 transitions. [2020-10-27 04:59:56,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-27 04:59:56,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:59:56,650 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] [2020-10-27 04:59:56,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:59:56,651 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:59:56,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:59:56,651 INFO L82 PathProgramCache]: Analyzing trace with hash 2093676530, now seen corresponding path program 1 times [2020-10-27 04:59:56,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:59:56,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88734696] [2020-10-27 04:59:56,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:59:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:56,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:56,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:56,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:57,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:58,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:58,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:01,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:01,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 05:00:01,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:00:01,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 05:00:01,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:01,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:00:01,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:00:01,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 05:00:01,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:00:02,372 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:00:02,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:00:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:02,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:02,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:02,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:00:02,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:00:02,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 05:00:02,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:02,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:00:02,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:00:02,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:00:02,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:00:02,437 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 05:00:02,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88734696] [2020-10-27 05:00:02,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:00:02,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:00:02,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590092543] [2020-10-27 05:00:02,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:00:02,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:00:02,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:00:02,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:00:02,439 INFO L87 Difference]: Start difference. First operand 12067 states and 19572 transitions. Second operand 5 states. [2020-10-27 05:00:05,897 WARN L193 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:00:06,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:00:06,458 INFO L93 Difference]: Finished difference Result 34753 states and 56360 transitions. [2020-10-27 05:00:06,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:00:06,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-27 05:00:06,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:00:06,517 INFO L225 Difference]: With dead ends: 34753 [2020-10-27 05:00:06,517 INFO L226 Difference]: Without dead ends: 23278 [2020-10-27 05:00:06,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:00:06,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23278 states. [2020-10-27 05:00:08,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23278 to 23275. [2020-10-27 05:00:08,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23275 states. [2020-10-27 05:00:08,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23275 states to 23275 states and 37476 transitions. [2020-10-27 05:00:08,464 INFO L78 Accepts]: Start accepts. Automaton has 23275 states and 37476 transitions. Word has length 110 [2020-10-27 05:00:08,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:00:08,465 INFO L481 AbstractCegarLoop]: Abstraction has 23275 states and 37476 transitions. [2020-10-27 05:00:08,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:00:08,465 INFO L276 IsEmpty]: Start isEmpty. Operand 23275 states and 37476 transitions. [2020-10-27 05:00:08,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 05:00:08,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:00:08,509 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] [2020-10-27 05:00:08,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:00:08,509 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:00:08,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:00:08,510 INFO L82 PathProgramCache]: Analyzing trace with hash 748340327, now seen corresponding path program 1 times [2020-10-27 05:00:08,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:00:08,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140307902] [2020-10-27 05:00:08,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:00:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:08,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:08,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:08,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:08,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:08,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:09,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:13,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:13,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 05:00:13,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:00:13,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 05:00:13,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:13,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:00:13,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:00:13,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 05:00:13,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:00:14,242 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:00:14,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:00:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:14,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:14,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:14,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:00:14,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:00:14,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 05:00:14,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:14,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:00:14,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:00:14,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:00:14,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:00:14,335 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 05:00:14,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140307902] [2020-10-27 05:00:14,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:00:14,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:00:14,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321845626] [2020-10-27 05:00:14,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:00:14,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:00:14,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:00:14,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:00:14,338 INFO L87 Difference]: Start difference. First operand 23275 states and 37476 transitions. Second operand 8 states. [2020-10-27 05:00:15,054 WARN L193 SmtUtils]: Spent 620.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:00:19,140 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification that was a NOOP. DAG size: 285 [2020-10-27 05:00:21,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:00:21,191 INFO L93 Difference]: Finished difference Result 54309 states and 88460 transitions. [2020-10-27 05:00:21,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 05:00:21,192 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-10-27 05:00:21,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:00:21,309 INFO L225 Difference]: With dead ends: 54309 [2020-10-27 05:00:21,309 INFO L226 Difference]: Without dead ends: 41222 [2020-10-27 05:00:21,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-27 05:00:21,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41222 states. [2020-10-27 05:00:23,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41222 to 23755. [2020-10-27 05:00:23,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23755 states. [2020-10-27 05:00:23,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23755 states to 23755 states and 37988 transitions. [2020-10-27 05:00:23,354 INFO L78 Accepts]: Start accepts. Automaton has 23755 states and 37988 transitions. Word has length 111 [2020-10-27 05:00:23,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:00:23,355 INFO L481 AbstractCegarLoop]: Abstraction has 23755 states and 37988 transitions. [2020-10-27 05:00:23,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:00:23,355 INFO L276 IsEmpty]: Start isEmpty. Operand 23755 states and 37988 transitions. [2020-10-27 05:00:23,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 05:00:23,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:00:23,390 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] [2020-10-27 05:00:23,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:00:23,390 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:00:23,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:00:23,391 INFO L82 PathProgramCache]: Analyzing trace with hash 966164150, now seen corresponding path program 1 times [2020-10-27 05:00:23,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:00:23,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302904673] [2020-10-27 05:00:23,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:00:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:23,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:23,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:23,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:23,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:24,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:27,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:27,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 05:00:27,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:00:27,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3622 [2020-10-27 05:00:27,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:27,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:00:27,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 05:00:27,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 05:00:27,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:00:27,662 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:00:27,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:00:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:27,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:27,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:27,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:00:27,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:00:27,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 05:00:27,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:27,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:00:27,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:00:27,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:00:27,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:00:27,704 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 05:00:27,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302904673] [2020-10-27 05:00:27,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:00:27,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:00:27,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601488120] [2020-10-27 05:00:27,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:00:27,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:00:27,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:00:27,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:00:27,706 INFO L87 Difference]: Start difference. First operand 23755 states and 37988 transitions. Second operand 4 states. [2020-10-27 05:00:28,334 WARN L193 SmtUtils]: Spent 585.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-27 05:00:32,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:00:32,911 INFO L93 Difference]: Finished difference Result 51281 states and 82792 transitions. [2020-10-27 05:00:32,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:00:32,912 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-10-27 05:00:32,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:00:32,994 INFO L225 Difference]: With dead ends: 51281 [2020-10-27 05:00:32,994 INFO L226 Difference]: Without dead ends: 36974 [2020-10-27 05:00:33,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:00:33,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36974 states. [2020-10-27 05:00:36,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36974 to 36843. [2020-10-27 05:00:36,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36843 states. [2020-10-27 05:00:36,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36843 states to 36843 states and 59012 transitions. [2020-10-27 05:00:36,168 INFO L78 Accepts]: Start accepts. Automaton has 36843 states and 59012 transitions. Word has length 111 [2020-10-27 05:00:36,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:00:36,168 INFO L481 AbstractCegarLoop]: Abstraction has 36843 states and 59012 transitions. [2020-10-27 05:00:36,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:00:36,169 INFO L276 IsEmpty]: Start isEmpty. Operand 36843 states and 59012 transitions. [2020-10-27 05:00:36,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-27 05:00:36,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:00:36,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:00:36,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:00:36,197 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:00:36,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:00:36,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1439215490, now seen corresponding path program 1 times [2020-10-27 05:00:36,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:00:36,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233711439] [2020-10-27 05:00:36,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:00:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:36,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:36,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:36,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:36,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:37,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:37,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:37,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:41,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:41,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 05:00:41,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:00:41,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 05:00:41,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:41,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:00:41,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:00:41,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 05:00:41,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:00:41,892 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:00:41,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:00:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:41,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:41,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:41,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:00:41,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:00:41,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 05:00:41,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:41,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:00:41,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:00:41,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:00:41,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:00:41,941 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 05:00:41,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233711439] [2020-10-27 05:00:41,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:00:41,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:00:41,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84014804] [2020-10-27 05:00:41,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:00:41,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:00:41,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:00:41,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:00:41,943 INFO L87 Difference]: Start difference. First operand 36843 states and 59012 transitions. Second operand 5 states. [2020-10-27 05:00:46,934 WARN L193 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:00:49,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:00:49,965 INFO L93 Difference]: Finished difference Result 108293 states and 173394 transitions. [2020-10-27 05:00:49,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:00:49,966 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-27 05:00:49,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:00:50,135 INFO L225 Difference]: With dead ends: 108293 [2020-10-27 05:00:50,135 INFO L226 Difference]: Without dead ends: 71791 [2020-10-27 05:00:50,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:00:50,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71791 states. [2020-10-27 05:00:56,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71791 to 71788. [2020-10-27 05:00:56,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71788 states. [2020-10-27 05:00:56,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71788 states to 71788 states and 114190 transitions. [2020-10-27 05:00:56,259 INFO L78 Accepts]: Start accepts. Automaton has 71788 states and 114190 transitions. Word has length 115 [2020-10-27 05:00:56,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:00:56,259 INFO L481 AbstractCegarLoop]: Abstraction has 71788 states and 114190 transitions. [2020-10-27 05:00:56,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:00:56,260 INFO L276 IsEmpty]: Start isEmpty. Operand 71788 states and 114190 transitions. [2020-10-27 05:00:56,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-27 05:00:56,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:00:56,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:00:56,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:00:56,306 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:00:56,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:00:56,306 INFO L82 PathProgramCache]: Analyzing trace with hash -2124697612, now seen corresponding path program 1 times [2020-10-27 05:00:56,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:00:56,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101624762] [2020-10-27 05:00:56,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:00:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:56,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:56,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:56,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:56,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:56,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:59,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:59,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:01,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:01,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 05:01:01,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:01:01,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 05:01:01,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:01,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:01:01,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:01:01,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 05:01:01,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:02,052 WARN L193 SmtUtils]: Spent 623.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:01:02,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:01:02,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:02,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:02,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:02,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:01:02,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:01:02,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 05:01:02,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:02,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:01:02,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:01:02,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:01:02,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:02,128 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 05:01:02,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101624762] [2020-10-27 05:01:02,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:01:02,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:01:02,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500683638] [2020-10-27 05:01:02,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:01:02,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:01:02,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:01:02,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:01:02,130 INFO L87 Difference]: Start difference. First operand 71788 states and 114190 transitions. Second operand 5 states. [2020-10-27 05:01:09,445 WARN L193 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:01:16,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:01:16,204 INFO L93 Difference]: Finished difference Result 209348 states and 332992 transitions. [2020-10-27 05:01:16,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:01:16,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-27 05:01:16,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:01:16,558 INFO L225 Difference]: With dead ends: 209348 [2020-10-27 05:01:16,558 INFO L226 Difference]: Without dead ends: 139793 [2020-10-27 05:01:16,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:01:16,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139793 states. [2020-10-27 05:01:28,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139793 to 139790. [2020-10-27 05:01:28,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139790 states. [2020-10-27 05:01:28,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139790 states to 139790 states and 220972 transitions. [2020-10-27 05:01:28,974 INFO L78 Accepts]: Start accepts. Automaton has 139790 states and 220972 transitions. Word has length 117 [2020-10-27 05:01:28,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:01:28,975 INFO L481 AbstractCegarLoop]: Abstraction has 139790 states and 220972 transitions. [2020-10-27 05:01:28,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:01:28,975 INFO L276 IsEmpty]: Start isEmpty. Operand 139790 states and 220972 transitions. [2020-10-27 05:01:29,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-27 05:01:29,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:01:29,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:01:29,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 05:01:29,071 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:01:29,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:01:29,071 INFO L82 PathProgramCache]: Analyzing trace with hash -965980124, now seen corresponding path program 1 times [2020-10-27 05:01:29,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:01:29,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620660275] [2020-10-27 05:01:29,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:01:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:29,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:29,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:29,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:29,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:29,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:29,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:29,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:30,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:30,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:34,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:34,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 05:01:34,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:01:34,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 05:01:34,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:34,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:01:34,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:01:34,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 05:01:34,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:34,813 WARN L193 SmtUtils]: Spent 571.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-27 05:01:34,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:01:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:34,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:34,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:34,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:01:34,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:01:34,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 05:01:34,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:34,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:01:34,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:01:34,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:01:34,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:34,881 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 05:01:34,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620660275] [2020-10-27 05:01:34,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:01:34,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:01:34,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363510546] [2020-10-27 05:01:34,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:01:34,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:01:34,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:01:34,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:01:34,883 INFO L87 Difference]: Start difference. First operand 139790 states and 220972 transitions. Second operand 5 states. [2020-10-27 05:01:46,593 WARN L193 SmtUtils]: Spent 587.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 05:02:03,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:02:03,172 INFO L93 Difference]: Finished difference Result 405623 states and 641126 transitions. [2020-10-27 05:02:03,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:02:03,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-27 05:02:03,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:02:03,843 INFO L225 Difference]: With dead ends: 405623 [2020-10-27 05:02:03,844 INFO L226 Difference]: Without dead ends: 273972 [2020-10-27 05:02:03,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:02:04,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273972 states. [2020-10-27 05:02:29,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273972 to 273969. [2020-10-27 05:02:29,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273969 states. [2020-10-27 05:02:30,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273969 states to 273969 states and 430370 transitions. [2020-10-27 05:02:30,397 INFO L78 Accepts]: Start accepts. Automaton has 273969 states and 430370 transitions. Word has length 117 [2020-10-27 05:02:30,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:02:30,397 INFO L481 AbstractCegarLoop]: Abstraction has 273969 states and 430370 transitions. [2020-10-27 05:02:30,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:02:30,398 INFO L276 IsEmpty]: Start isEmpty. Operand 273969 states and 430370 transitions. [2020-10-27 05:02:31,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-27 05:02:31,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:02:31,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:02:31,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 05:02:31,007 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:02:31,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:02:31,007 INFO L82 PathProgramCache]: Analyzing trace with hash 100860765, now seen corresponding path program 1 times [2020-10-27 05:02:31,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:02:31,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707001914] [2020-10-27 05:02:31,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:02:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:31,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:31,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:31,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:31,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:31,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking...