/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:59:25,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:59:25,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:59:25,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:59:25,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:59:25,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:59:25,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:59:25,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:59:25,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:59:25,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:59:25,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:59:25,215 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:59:25,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:59:25,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:59:25,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:59:25,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:59:25,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:59:25,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:59:25,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:59:25,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:59:25,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:59:25,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:59:25,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:59:25,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:59:25,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:59:25,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:59:25,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:59:25,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:59:25,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:59:25,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:59:25,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:59:25,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:59:25,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:59:25,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:59:25,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:59:25,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:59:25,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:59:25,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:59:25,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:59:25,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:59:25,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:59:25,283 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 [2020-10-29 13:59:25,331 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:59:25,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:59:25,333 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:59:25,333 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:59:25,334 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:59:25,334 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:59:25,334 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:59:25,334 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:59:25,334 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:59:25,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:59:25,335 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:59:25,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:59:25,335 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:59:25,335 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:59:25,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:59:25,336 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:59:25,336 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:59:25,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:59:25,336 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:59:25,337 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:59:25,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:59:25,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:59:25,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:59:25,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:59:25,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:59:25,338 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:59:25,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:59:25,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:59:25,338 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:59:25,338 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:59:25,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:59:25,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:59:25,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:59:25,738 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:59:25,739 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:59:25,740 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-29 13:59:25,831 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e7a8cecf/6521c0b3a942429db73041173973bdac/FLAGfb7437ca8 [2020-10-29 13:59:26,546 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:59:26,547 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-29 13:59:26,563 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e7a8cecf/6521c0b3a942429db73041173973bdac/FLAGfb7437ca8 [2020-10-29 13:59:26,879 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e7a8cecf/6521c0b3a942429db73041173973bdac [2020-10-29 13:59:26,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:59:26,890 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:59:26,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:59:26,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:59:26,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:59:26,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:59:26" (1/1) ... [2020-10-29 13:59:26,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7860cc30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:26, skipping insertion in model container [2020-10-29 13:59:26,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:59:26" (1/1) ... [2020-10-29 13:59:26,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:59:26,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:59:27,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:59:27,311 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:59:27,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:59:27,501 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:59:27,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:27 WrapperNode [2020-10-29 13:59:27,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:59:27,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:59:27,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:59:27,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:59:27,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:27" (1/1) ... [2020-10-29 13:59:27,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:27" (1/1) ... [2020-10-29 13:59:27,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:27" (1/1) ... [2020-10-29 13:59:27,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:27" (1/1) ... [2020-10-29 13:59:27,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:27" (1/1) ... [2020-10-29 13:59:27,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:27" (1/1) ... [2020-10-29 13:59:27,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:27" (1/1) ... [2020-10-29 13:59:27,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:59:27,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:59:27,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:59:27,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:59:27,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:27" (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 [2020-10-29 13:59:27,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:59:27,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:59:27,696 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:59:27,697 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:59:27,697 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:59:27,698 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:59:27,698 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:59:27,698 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:59:27,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:59:27,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:59:27,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 13:59:27,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:59:27,700 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:59:27,700 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:59:27,701 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:59:27,702 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:59:27,702 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:59:27,702 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:59:27,703 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:59:27,703 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:59:27,703 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:59:27,703 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:59:27,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:59:27,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:59:27,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:59:27,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:59:27,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:59:27,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:59:28,686 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:59:28,686 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:59:28,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:59:28 BoogieIcfgContainer [2020-10-29 13:59:28,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:59:28,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:59:28,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:59:28,694 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:59:28,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:59:26" (1/3) ... [2020-10-29 13:59:28,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6092a98d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:59:28, skipping insertion in model container [2020-10-29 13:59:28,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:59:27" (2/3) ... [2020-10-29 13:59:28,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6092a98d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:59:28, skipping insertion in model container [2020-10-29 13:59:28,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:59:28" (3/3) ... [2020-10-29 13:59:28,698 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-29 13:59:28,711 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:59:28,719 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:59:28,733 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:59:28,762 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:59:28,762 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:59:28,762 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:59:28,763 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:59:28,763 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:59:28,763 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:59:28,763 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:59:28,763 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:59:28,785 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2020-10-29 13:59:28,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 13:59:28,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:28,797 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] [2020-10-29 13:59:28,798 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:28,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:28,805 INFO L82 PathProgramCache]: Analyzing trace with hash 110987728, now seen corresponding path program 1 times [2020-10-29 13:59:28,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:28,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334971687] [2020-10-29 13:59:28,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:29,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:29,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:29,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:30,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:32,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:32,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 13:59:32,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 13:59:32,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3048 [2020-10-29 13:59:32,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:32,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:32,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:59:32,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 13:59:32,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 13:59:32,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 13:59:32,707 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:59:32,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:32,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:32,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:32,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:32,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:32,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 13:59:32,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:32,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:32,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:32,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:32,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:32,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 13:59:32,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:32,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334971687] [2020-10-29 13:59:32,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:32,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:59:32,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593136929] [2020-10-29 13:59:32,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:59:32,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:32,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:59:32,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:59:32,860 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 4 states. [2020-10-29 13:59:33,299 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 13:59:34,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:34,241 INFO L93 Difference]: Finished difference Result 356 states and 590 transitions. [2020-10-29 13:59:34,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:59:34,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-29 13:59:34,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:34,263 INFO L225 Difference]: With dead ends: 356 [2020-10-29 13:59:34,264 INFO L226 Difference]: Without dead ends: 245 [2020-10-29 13:59:34,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:34,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-29 13:59:34,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 241. [2020-10-29 13:59:34,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-29 13:59:34,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 378 transitions. [2020-10-29 13:59:34,374 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 378 transitions. Word has length 67 [2020-10-29 13:59:34,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:34,374 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 378 transitions. [2020-10-29 13:59:34,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:59:34,375 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 378 transitions. [2020-10-29 13:59:34,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 13:59:34,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:34,378 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] [2020-10-29 13:59:34,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:59:34,379 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:34,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:34,380 INFO L82 PathProgramCache]: Analyzing trace with hash 616229487, now seen corresponding path program 1 times [2020-10-29 13:59:34,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:34,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007062973] [2020-10-29 13:59:34,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:34,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:34,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:34,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:34,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:34,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:36,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:39,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:39,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 13:59:39,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:59:39,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 13:59:39,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:39,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:39,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:39,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:59:39,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 13:59:39,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 13:59:39,965 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:59:39,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:39,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:40,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:40,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:40,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:40,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 13:59:40,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:40,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:40,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:40,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:40,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:40,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:59:40,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:40,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007062973] [2020-10-29 13:59:40,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:40,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:40,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353859558] [2020-10-29 13:59:40,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:40,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:40,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:40,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:40,062 INFO L87 Difference]: Start difference. First operand 241 states and 378 transitions. Second operand 5 states. [2020-10-29 13:59:41,412 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:59:41,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:41,511 INFO L93 Difference]: Finished difference Result 640 states and 1021 transitions. [2020-10-29 13:59:41,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:59:41,512 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-29 13:59:41,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:41,516 INFO L225 Difference]: With dead ends: 640 [2020-10-29 13:59:41,516 INFO L226 Difference]: Without dead ends: 460 [2020-10-29 13:59:41,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:59:41,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-10-29 13:59:41,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 457. [2020-10-29 13:59:41,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-10-29 13:59:41,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 716 transitions. [2020-10-29 13:59:41,567 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 716 transitions. Word has length 69 [2020-10-29 13:59:41,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:41,568 INFO L481 AbstractCegarLoop]: Abstraction has 457 states and 716 transitions. [2020-10-29 13:59:41,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:41,568 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 716 transitions. [2020-10-29 13:59:41,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 13:59:41,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:41,572 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] [2020-10-29 13:59:41,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:59:41,573 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:41,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:41,573 INFO L82 PathProgramCache]: Analyzing trace with hash -377940500, now seen corresponding path program 1 times [2020-10-29 13:59:41,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:41,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974686240] [2020-10-29 13:59:41,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:41,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:41,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:41,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:41,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:42,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:45,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:45,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 13:59:45,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:59:45,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4104 [2020-10-29 13:59:45,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:45,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:45,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:45,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:59:45,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 13:59:45,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:59:46,135 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:59:46,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:46,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:46,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:46,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:46,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:46,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 13:59:46,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:46,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:46,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:46,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:46,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:46,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:46,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:46,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974686240] [2020-10-29 13:59:46,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:46,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:46,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271371012] [2020-10-29 13:59:46,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:46,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:46,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:46,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:46,195 INFO L87 Difference]: Start difference. First operand 457 states and 716 transitions. Second operand 5 states. [2020-10-29 13:59:47,632 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:59:47,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:47,772 INFO L93 Difference]: Finished difference Result 1208 states and 1920 transitions. [2020-10-29 13:59:47,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:59:47,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-10-29 13:59:47,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:47,779 INFO L225 Difference]: With dead ends: 1208 [2020-10-29 13:59:47,779 INFO L226 Difference]: Without dead ends: 863 [2020-10-29 13:59:47,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:59:47,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2020-10-29 13:59:47,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 860. [2020-10-29 13:59:47,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 860 states. [2020-10-29 13:59:47,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1338 transitions. [2020-10-29 13:59:47,868 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1338 transitions. Word has length 70 [2020-10-29 13:59:47,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:47,869 INFO L481 AbstractCegarLoop]: Abstraction has 860 states and 1338 transitions. [2020-10-29 13:59:47,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:47,869 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1338 transitions. [2020-10-29 13:59:47,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 13:59:47,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:47,873 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] [2020-10-29 13:59:47,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:59:47,874 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:47,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:47,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1895012702, now seen corresponding path program 1 times [2020-10-29 13:59:47,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:47,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526093679] [2020-10-29 13:59:47,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:47,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:47,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:47,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:48,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:48,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:48,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:49,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:49,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 13:59:49,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:59:49,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1724 [2020-10-29 13:59:49,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:49,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:49,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:59:49,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 13:59:49,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 13:59:49,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:49,937 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:59:49,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:49,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:49,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:49,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:49,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:49,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:59:49,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:49,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:49,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:49,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:49,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:49,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:49,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:49,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526093679] [2020-10-29 13:59:49,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:49,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:59:49,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095580370] [2020-10-29 13:59:49,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:59:49,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:49,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:59:49,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:59:49,978 INFO L87 Difference]: Start difference. First operand 860 states and 1338 transitions. Second operand 4 states. [2020-10-29 13:59:50,340 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 13:59:51,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:51,250 INFO L93 Difference]: Finished difference Result 2126 states and 3426 transitions. [2020-10-29 13:59:51,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:59:51,251 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-10-29 13:59:51,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:51,262 INFO L225 Difference]: With dead ends: 2126 [2020-10-29 13:59:51,263 INFO L226 Difference]: Without dead ends: 1463 [2020-10-29 13:59:51,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:51,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2020-10-29 13:59:51,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1452. [2020-10-29 13:59:51,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1452 states. [2020-10-29 13:59:51,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 2306 transitions. [2020-10-29 13:59:51,400 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 2306 transitions. Word has length 71 [2020-10-29 13:59:51,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:51,405 INFO L481 AbstractCegarLoop]: Abstraction has 1452 states and 2306 transitions. [2020-10-29 13:59:51,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:59:51,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 2306 transitions. [2020-10-29 13:59:51,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-29 13:59:51,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:51,408 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] [2020-10-29 13:59:51,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:59:51,408 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:51,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:51,409 INFO L82 PathProgramCache]: Analyzing trace with hash -239144511, now seen corresponding path program 1 times [2020-10-29 13:59:51,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:51,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925250247] [2020-10-29 13:59:51,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:51,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:51,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:51,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:51,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:52,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:53,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:56,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:56,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 13:59:56,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:59:56,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4945 [2020-10-29 13:59:56,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:56,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:56,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:56,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:59:56,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 13:59:56,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:56,882 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:59:56,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:56,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:56,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:56,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:56,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:56,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 13:59:56,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:56,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:56,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:56,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:56,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:56,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:59:56,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:56,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925250247] [2020-10-29 13:59:56,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:56,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:56,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056549783] [2020-10-29 13:59:56,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:56,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:56,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:56,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:56,949 INFO L87 Difference]: Start difference. First operand 1452 states and 2306 transitions. Second operand 5 states. [2020-10-29 13:59:58,410 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:59:58,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:58,714 INFO L93 Difference]: Finished difference Result 4099 states and 6532 transitions. [2020-10-29 13:59:58,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:59:58,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-29 13:59:58,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:58,732 INFO L225 Difference]: With dead ends: 4099 [2020-10-29 13:59:58,732 INFO L226 Difference]: Without dead ends: 2773 [2020-10-29 13:59:58,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:59:58,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2773 states. [2020-10-29 13:59:58,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2773 to 2770. [2020-10-29 13:59:58,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2770 states. [2020-10-29 13:59:58,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2770 states to 2770 states and 4358 transitions. [2020-10-29 13:59:58,994 INFO L78 Accepts]: Start accepts. Automaton has 2770 states and 4358 transitions. Word has length 73 [2020-10-29 13:59:58,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:58,994 INFO L481 AbstractCegarLoop]: Abstraction has 2770 states and 4358 transitions. [2020-10-29 13:59:58,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:58,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2770 states and 4358 transitions. [2020-10-29 13:59:59,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-29 13:59:59,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:59,002 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] [2020-10-29 13:59:59,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:59:59,002 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:59,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:59,003 INFO L82 PathProgramCache]: Analyzing trace with hash 155358574, now seen corresponding path program 1 times [2020-10-29 13:59:59,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:59,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979344169] [2020-10-29 13:59:59,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:59,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:59,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:59,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:59,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:59,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:59,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:00,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:02,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:02,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 14:00:02,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:00:02,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3904 [2020-10-29 14:00:02,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:02,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:02,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:00:02,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:00:02,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 14:00:02,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:00:03,548 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:00:03,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:03,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:03,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:03,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:03,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:03,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 14:00:03,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:03,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:03,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:03,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:03,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:03,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:00:03,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:03,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979344169] [2020-10-29 14:00:03,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:03,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:00:03,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764359502] [2020-10-29 14:00:03,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:00:03,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:03,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:00:03,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:03,627 INFO L87 Difference]: Start difference. First operand 2770 states and 4358 transitions. Second operand 5 states. [2020-10-29 14:00:05,162 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 14:00:05,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:05,638 INFO L93 Difference]: Finished difference Result 7734 states and 12291 transitions. [2020-10-29 14:00:05,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:00:05,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-29 14:00:05,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:05,667 INFO L225 Difference]: With dead ends: 7734 [2020-10-29 14:00:05,667 INFO L226 Difference]: Without dead ends: 5323 [2020-10-29 14:00:05,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:00:05,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5323 states. [2020-10-29 14:00:06,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5323 to 5320. [2020-10-29 14:00:06,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5320 states. [2020-10-29 14:00:06,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5320 states to 5320 states and 8311 transitions. [2020-10-29 14:00:06,207 INFO L78 Accepts]: Start accepts. Automaton has 5320 states and 8311 transitions. Word has length 74 [2020-10-29 14:00:06,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:06,208 INFO L481 AbstractCegarLoop]: Abstraction has 5320 states and 8311 transitions. [2020-10-29 14:00:06,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:00:06,208 INFO L276 IsEmpty]: Start isEmpty. Operand 5320 states and 8311 transitions. [2020-10-29 14:00:06,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 14:00:06,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:06,215 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] [2020-10-29 14:00:06,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 14:00:06,215 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:06,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:06,216 INFO L82 PathProgramCache]: Analyzing trace with hash 346334016, now seen corresponding path program 1 times [2020-10-29 14:00:06,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:06,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449686000] [2020-10-29 14:00:06,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:06,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:06,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:06,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:06,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:06,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:07,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:10,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:10,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 14:00:10,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:00:10,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4538 [2020-10-29 14:00:10,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:10,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:10,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:00:10,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 14:00:10,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 14:00:10,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:11,137 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:00:11,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:11,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:11,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:11,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:11,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:11,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 14:00:11,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:11,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:11,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:11,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:11,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:11,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:00:11,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:11,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449686000] [2020-10-29 14:00:11,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:11,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:00:11,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573612341] [2020-10-29 14:00:11,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:00:11,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:11,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:00:11,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:00:11,187 INFO L87 Difference]: Start difference. First operand 5320 states and 8311 transitions. Second operand 4 states. [2020-10-29 14:00:11,561 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 14:00:13,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:13,102 INFO L93 Difference]: Finished difference Result 14030 states and 22395 transitions. [2020-10-29 14:00:13,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:00:13,102 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-10-29 14:00:13,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:13,155 INFO L225 Difference]: With dead ends: 14030 [2020-10-29 14:00:13,155 INFO L226 Difference]: Without dead ends: 9387 [2020-10-29 14:00:13,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:13,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9387 states. [2020-10-29 14:00:14,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9387 to 9320. [2020-10-29 14:00:14,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9320 states. [2020-10-29 14:00:14,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9320 states to 9320 states and 14423 transitions. [2020-10-29 14:00:14,316 INFO L78 Accepts]: Start accepts. Automaton has 9320 states and 14423 transitions. Word has length 75 [2020-10-29 14:00:14,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:14,316 INFO L481 AbstractCegarLoop]: Abstraction has 9320 states and 14423 transitions. [2020-10-29 14:00:14,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:00:14,317 INFO L276 IsEmpty]: Start isEmpty. Operand 9320 states and 14423 transitions. [2020-10-29 14:00:14,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-29 14:00:14,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:14,326 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] [2020-10-29 14:00:14,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 14:00:14,327 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:14,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:14,327 INFO L82 PathProgramCache]: Analyzing trace with hash 33697567, now seen corresponding path program 1 times [2020-10-29 14:00:14,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:14,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540585691] [2020-10-29 14:00:14,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:14,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:14,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:14,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:14,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:14,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:15,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:18,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:19,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:19,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 14:00:19,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:00:19,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 14:00:19,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:19,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:19,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:00:19,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:00:19,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 14:00:19,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:19,783 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:00:19,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:19,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:19,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:19,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:19,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:19,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:19,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:00:19,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:19,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:19,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:19,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:19,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:19,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:19,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:19,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540585691] [2020-10-29 14:00:19,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:19,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:00:19,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17904440] [2020-10-29 14:00:19,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:00:19,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:19,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:00:19,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:19,832 INFO L87 Difference]: Start difference. First operand 9320 states and 14423 transitions. Second operand 5 states. [2020-10-29 14:00:21,739 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 14:00:22,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:22,784 INFO L93 Difference]: Finished difference Result 26822 states and 41563 transitions. [2020-10-29 14:00:22,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:00:22,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-10-29 14:00:22,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:22,846 INFO L225 Difference]: With dead ends: 26822 [2020-10-29 14:00:22,846 INFO L226 Difference]: Without dead ends: 17874 [2020-10-29 14:00:22,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:00:22,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17874 states. [2020-10-29 14:00:24,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17874 to 17871. [2020-10-29 14:00:24,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17871 states. [2020-10-29 14:00:24,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17871 states to 17871 states and 27392 transitions. [2020-10-29 14:00:24,333 INFO L78 Accepts]: Start accepts. Automaton has 17871 states and 27392 transitions. Word has length 77 [2020-10-29 14:00:24,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:24,333 INFO L481 AbstractCegarLoop]: Abstraction has 17871 states and 27392 transitions. [2020-10-29 14:00:24,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:00:24,334 INFO L276 IsEmpty]: Start isEmpty. Operand 17871 states and 27392 transitions. [2020-10-29 14:00:24,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 14:00:24,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:24,350 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] [2020-10-29 14:00:24,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 14:00:24,350 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:24,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:24,351 INFO L82 PathProgramCache]: Analyzing trace with hash -451519928, now seen corresponding path program 1 times [2020-10-29 14:00:24,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:24,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778999132] [2020-10-29 14:00:24,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:24,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:24,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:24,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:24,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:24,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:25,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:28,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:29,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:29,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 14:00:29,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:00:29,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 14:00:29,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:29,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:29,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:00:29,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:00:29,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 14:00:29,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:29,813 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:00:29,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:29,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:29,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:29,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:29,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:29,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:00:29,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:29,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:29,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:29,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:29,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:29,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:29,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:29,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778999132] [2020-10-29 14:00:29,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:29,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:00:29,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64954188] [2020-10-29 14:00:29,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:00:29,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:29,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:00:29,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:29,861 INFO L87 Difference]: Start difference. First operand 17871 states and 27392 transitions. Second operand 5 states. [2020-10-29 14:00:32,202 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 14:00:34,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:34,097 INFO L93 Difference]: Finished difference Result 51903 states and 79459 transitions. [2020-10-29 14:00:34,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:00:34,098 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-29 14:00:34,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:34,200 INFO L225 Difference]: With dead ends: 51903 [2020-10-29 14:00:34,200 INFO L226 Difference]: Without dead ends: 34298 [2020-10-29 14:00:34,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:00:34,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34298 states. [2020-10-29 14:00:37,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34298 to 34295. [2020-10-29 14:00:37,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34295 states. [2020-10-29 14:00:37,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34295 states to 34295 states and 52019 transitions. [2020-10-29 14:00:37,565 INFO L78 Accepts]: Start accepts. Automaton has 34295 states and 52019 transitions. Word has length 78 [2020-10-29 14:00:37,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:37,565 INFO L481 AbstractCegarLoop]: Abstraction has 34295 states and 52019 transitions. [2020-10-29 14:00:37,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:00:37,565 INFO L276 IsEmpty]: Start isEmpty. Operand 34295 states and 52019 transitions. [2020-10-29 14:00:37,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 14:00:37,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:37,594 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] [2020-10-29 14:00:37,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 14:00:37,594 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:37,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:37,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1070366841, now seen corresponding path program 1 times [2020-10-29 14:00:37,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:37,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760532616] [2020-10-29 14:00:37,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:37,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:37,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:37,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:37,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:37,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:38,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:40,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:40,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:42,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:42,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 14:00:42,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:00:42,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 14:00:42,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:42,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:42,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:00:42,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:00:42,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 14:00:42,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:43,084 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:00:43,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:43,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:43,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:43,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:43,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:43,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 14:00:43,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:43,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:43,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:43,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:43,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:43,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:43,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:43,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760532616] [2020-10-29 14:00:43,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:43,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:00:43,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50781450] [2020-10-29 14:00:43,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:00:43,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:43,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:00:43,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:43,128 INFO L87 Difference]: Start difference. First operand 34295 states and 52019 transitions. Second operand 5 states. [2020-10-29 14:00:43,551 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 14:00:48,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:48,018 INFO L93 Difference]: Finished difference Result 56998 states and 86211 transitions. [2020-10-29 14:00:48,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:00:48,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-29 14:00:48,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:48,098 INFO L225 Difference]: With dead ends: 56998 [2020-10-29 14:00:48,098 INFO L226 Difference]: Without dead ends: 39141 [2020-10-29 14:00:48,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:00:48,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39141 states. [2020-10-29 14:00:51,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39141 to 39138. [2020-10-29 14:00:51,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39138 states. [2020-10-29 14:00:51,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39138 states to 39138 states and 58573 transitions. [2020-10-29 14:00:51,973 INFO L78 Accepts]: Start accepts. Automaton has 39138 states and 58573 transitions. Word has length 79 [2020-10-29 14:00:51,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:51,974 INFO L481 AbstractCegarLoop]: Abstraction has 39138 states and 58573 transitions. [2020-10-29 14:00:51,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:00:51,974 INFO L276 IsEmpty]: Start isEmpty. Operand 39138 states and 58573 transitions. [2020-10-29 14:00:52,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 14:00:52,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:52,001 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] [2020-10-29 14:00:52,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 14:00:52,001 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:52,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:52,001 INFO L82 PathProgramCache]: Analyzing trace with hash -2088881698, now seen corresponding path program 1 times [2020-10-29 14:00:52,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:52,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383285759] [2020-10-29 14:00:52,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:52,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:52,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:52,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:52,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:52,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:54,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:57,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:57,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 14:00:57,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:00:57,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 14:00:57,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:57,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:57,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:00:57,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-29 14:00:57,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 14:00:57,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:57,396 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:00:57,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:57,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:57,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:57,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:57,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:57,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-29 14:00:57,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:57,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:57,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:57,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:57,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:57,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:57,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:57,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383285759] [2020-10-29 14:00:57,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:57,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:00:57,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086015231] [2020-10-29 14:00:57,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:00:57,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:57,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:00:57,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:00:57,530 INFO L87 Difference]: Start difference. First operand 39138 states and 58573 transitions. Second operand 4 states. [2020-10-29 14:00:59,559 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-29 14:01:03,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:01:03,311 INFO L93 Difference]: Finished difference Result 78132 states and 118349 transitions. [2020-10-29 14:01:03,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:01:03,312 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-10-29 14:01:03,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:01:03,445 INFO L225 Difference]: With dead ends: 78132 [2020-10-29 14:01:03,445 INFO L226 Difference]: Without dead ends: 50885 [2020-10-29 14:01:03,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:01:03,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50885 states. [2020-10-29 14:01:08,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50885 to 49410. [2020-10-29 14:01:08,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49410 states. [2020-10-29 14:01:08,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49410 states to 49410 states and 73933 transitions. [2020-10-29 14:01:08,779 INFO L78 Accepts]: Start accepts. Automaton has 49410 states and 73933 transitions. Word has length 79 [2020-10-29 14:01:08,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:08,779 INFO L481 AbstractCegarLoop]: Abstraction has 49410 states and 73933 transitions. [2020-10-29 14:01:08,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:01:08,779 INFO L276 IsEmpty]: Start isEmpty. Operand 49410 states and 73933 transitions. [2020-10-29 14:01:08,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 14:01:08,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:08,799 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] [2020-10-29 14:01:08,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 14:01:08,799 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:08,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:08,800 INFO L82 PathProgramCache]: Analyzing trace with hash 839390698, now seen corresponding path program 1 times [2020-10-29 14:01:08,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:08,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603861652] [2020-10-29 14:01:08,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:08,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:08,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:08,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:08,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:08,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:08,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:08,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:13,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:13,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 14:01:13,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:01:13,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 14:01:13,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:13,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:13,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:01:13,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 14:01:13,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 14:01:13,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:14,230 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:01:14,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:01:14,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:14,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:14,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:14,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:01:14,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:14,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:01:14,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:14,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:14,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:01:14,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:01:14,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:01:14,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:14,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:01:14,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603861652] [2020-10-29 14:01:14,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:01:14,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:01:14,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710275662] [2020-10-29 14:01:14,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:01:14,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:01:14,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:01:14,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:01:14,271 INFO L87 Difference]: Start difference. First operand 49410 states and 73933 transitions. Second operand 5 states. [2020-10-29 14:01:17,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:01:17,995 INFO L93 Difference]: Finished difference Result 80859 states and 121013 transitions. [2020-10-29 14:01:17,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:01:17,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-29 14:01:17,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:01:18,074 INFO L225 Difference]: With dead ends: 80859 [2020-10-29 14:01:18,074 INFO L226 Difference]: Without dead ends: 31937 [2020-10-29 14:01:18,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:01:18,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31937 states. [2020-10-29 14:01:21,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31937 to 31937. [2020-10-29 14:01:21,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31937 states. [2020-10-29 14:01:21,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31937 states to 31937 states and 47699 transitions. [2020-10-29 14:01:21,269 INFO L78 Accepts]: Start accepts. Automaton has 31937 states and 47699 transitions. Word has length 79 [2020-10-29 14:01:21,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:21,269 INFO L481 AbstractCegarLoop]: Abstraction has 31937 states and 47699 transitions. [2020-10-29 14:01:21,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:01:21,270 INFO L276 IsEmpty]: Start isEmpty. Operand 31937 states and 47699 transitions. [2020-10-29 14:01:21,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 14:01:21,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:21,373 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] [2020-10-29 14:01:21,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 14:01:21,374 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:21,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:21,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1162230626, now seen corresponding path program 1 times [2020-10-29 14:01:21,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:21,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335049787] [2020-10-29 14:01:21,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:21,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:21,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:21,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:21,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:21,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:23,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:25,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:26,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:26,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 14:01:26,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:01:26,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 14:01:26,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:26,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:26,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:01:26,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-29 14:01:26,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 14:01:26,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:26,773 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:01:26,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:01:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:26,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:26,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:26,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:01:26,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:26,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 14:01:26,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:26,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:26,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:01:26,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:01:26,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:01:26,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:26,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:01:26,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335049787] [2020-10-29 14:01:26,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:01:26,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 14:01:26,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130395378] [2020-10-29 14:01:26,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:01:26,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:01:26,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:01:26,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:01:26,809 INFO L87 Difference]: Start difference. First operand 31937 states and 47699 transitions. Second operand 6 states. [2020-10-29 14:01:27,224 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 14:01:29,691 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 14:01:30,085 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 14:01:31,343 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 14:01:32,179 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 14:01:40,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:01:40,271 INFO L93 Difference]: Finished difference Result 144211 states and 221039 transitions. [2020-10-29 14:01:40,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 14:01:40,272 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-10-29 14:01:40,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:01:40,463 INFO L225 Difference]: With dead ends: 144211 [2020-10-29 14:01:40,464 INFO L226 Difference]: Without dead ends: 114528 [2020-10-29 14:01:40,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-29 14:01:40,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114528 states. [2020-10-29 14:01:47,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114528 to 58821. [2020-10-29 14:01:47,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58821 states. [2020-10-29 14:01:47,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58821 states to 58821 states and 88323 transitions. [2020-10-29 14:01:47,549 INFO L78 Accepts]: Start accepts. Automaton has 58821 states and 88323 transitions. Word has length 79 [2020-10-29 14:01:47,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:47,549 INFO L481 AbstractCegarLoop]: Abstraction has 58821 states and 88323 transitions. [2020-10-29 14:01:47,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 14:01:47,549 INFO L276 IsEmpty]: Start isEmpty. Operand 58821 states and 88323 transitions. [2020-10-29 14:01:47,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 14:01:47,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:47,566 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] [2020-10-29 14:01:47,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 14:01:47,566 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:47,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:47,567 INFO L82 PathProgramCache]: Analyzing trace with hash 715287774, now seen corresponding path program 1 times [2020-10-29 14:01:47,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:47,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257183831] [2020-10-29 14:01:47,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:47,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:47,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:47,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:47,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:47,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:47,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:52,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:52,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 14:01:52,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:01:52,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 14:01:52,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:52,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:52,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:01:52,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 14:01:52,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 14:01:52,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:52,989 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:01:52,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:01:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:52,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:53,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:53,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:01:53,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:53,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:01:53,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:53,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:53,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:01:53,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:01:53,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:01:53,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:53,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:01:53,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257183831] [2020-10-29 14:01:53,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:01:53,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:01:53,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75368689] [2020-10-29 14:01:53,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:01:53,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:01:53,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:01:53,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:01:53,027 INFO L87 Difference]: Start difference. First operand 58821 states and 88323 transitions. Second operand 5 states. [2020-10-29 14:01:58,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:01:58,314 INFO L93 Difference]: Finished difference Result 97786 states and 146777 transitions. [2020-10-29 14:01:58,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:01:58,315 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-29 14:01:58,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:01:58,363 INFO L225 Difference]: With dead ends: 97786 [2020-10-29 14:01:58,363 INFO L226 Difference]: Without dead ends: 39157 [2020-10-29 14:01:58,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:01:58,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39157 states. [2020-10-29 14:02:02,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39157 to 39139. [2020-10-29 14:02:02,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39139 states. [2020-10-29 14:02:02,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39139 states to 39139 states and 58671 transitions. [2020-10-29 14:02:02,796 INFO L78 Accepts]: Start accepts. Automaton has 39139 states and 58671 transitions. Word has length 80 [2020-10-29 14:02:02,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:02:02,797 INFO L481 AbstractCegarLoop]: Abstraction has 39139 states and 58671 transitions. [2020-10-29 14:02:02,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:02:02,797 INFO L276 IsEmpty]: Start isEmpty. Operand 39139 states and 58671 transitions. [2020-10-29 14:02:02,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 14:02:02,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:02:02,806 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] [2020-10-29 14:02:02,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 14:02:02,806 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:02:02,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:02:02,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1580901059, now seen corresponding path program 1 times [2020-10-29 14:02:02,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:02:02,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7044574] [2020-10-29 14:02:02,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:02:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:02,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:02,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:02,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:02,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:02,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:03,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:04,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:04,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:07,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:07,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:07,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 14:02:07,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:02:07,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 14:02:07,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:07,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:07,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:02:07,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:02:07,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 14:02:07,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:08,313 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:02:08,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:02:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:08,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:08,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:08,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:02:08,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:02:08,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:02:08,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:08,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:08,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:02:08,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:02:08,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:02:08,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:08,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:02:08,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7044574] [2020-10-29 14:02:08,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:02:08,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:02:08,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310553209] [2020-10-29 14:02:08,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:02:08,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:02:08,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:02:08,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:02:08,354 INFO L87 Difference]: Start difference. First operand 39139 states and 58671 transitions. Second operand 5 states. [2020-10-29 14:02:08,744 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 14:02:15,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:02:15,312 INFO L93 Difference]: Finished difference Result 77065 states and 115200 transitions. [2020-10-29 14:02:15,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:02:15,313 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-29 14:02:15,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:02:15,372 INFO L225 Difference]: With dead ends: 77065 [2020-10-29 14:02:15,372 INFO L226 Difference]: Without dead ends: 46332 [2020-10-29 14:02:15,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:02:15,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46332 states. [2020-10-29 14:02:20,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46332 to 46329. [2020-10-29 14:02:20,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46329 states. [2020-10-29 14:02:20,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46329 states to 46329 states and 68554 transitions. [2020-10-29 14:02:20,695 INFO L78 Accepts]: Start accepts. Automaton has 46329 states and 68554 transitions. Word has length 80 [2020-10-29 14:02:20,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:02:20,695 INFO L481 AbstractCegarLoop]: Abstraction has 46329 states and 68554 transitions. [2020-10-29 14:02:20,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:02:20,695 INFO L276 IsEmpty]: Start isEmpty. Operand 46329 states and 68554 transitions. [2020-10-29 14:02:20,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 14:02:20,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:02:20,708 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] [2020-10-29 14:02:20,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 14:02:20,708 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:02:20,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:02:20,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1206581802, now seen corresponding path program 1 times [2020-10-29 14:02:20,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:02:20,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744332076] [2020-10-29 14:02:20,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:02:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:20,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:20,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:20,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:20,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:20,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:21,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:22,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:22,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:25,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:25,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 14:02:25,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:02:25,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 14:02:25,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:25,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:25,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:02:25,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-29 14:02:25,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 14:02:25,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:26,108 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:02:26,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:02:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:26,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:26,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:26,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:02:26,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:02:26,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:02:26,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:26,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:26,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:02:26,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:02:26,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:02:26,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:26,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:02:26,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744332076] [2020-10-29 14:02:26,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:02:26,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:02:26,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385984872] [2020-10-29 14:02:26,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:02:26,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:02:26,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:02:26,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:02:26,141 INFO L87 Difference]: Start difference. First operand 46329 states and 68554 transitions. Second operand 5 states. [2020-10-29 14:02:26,538 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 14:02:29,337 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 14:02:38,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:02:38,209 INFO L93 Difference]: Finished difference Result 136563 states and 206034 transitions. [2020-10-29 14:02:38,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:02:38,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-29 14:02:38,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:02:38,352 INFO L225 Difference]: With dead ends: 136563 [2020-10-29 14:02:38,353 INFO L226 Difference]: Without dead ends: 93459 [2020-10-29 14:02:38,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-29 14:02:38,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93459 states. [2020-10-29 14:02:46,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93459 to 69601. [2020-10-29 14:02:46,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69601 states. [2020-10-29 14:02:47,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69601 states to 69601 states and 103569 transitions. [2020-10-29 14:02:47,031 INFO L78 Accepts]: Start accepts. Automaton has 69601 states and 103569 transitions. Word has length 80 [2020-10-29 14:02:47,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:02:47,031 INFO L481 AbstractCegarLoop]: Abstraction has 69601 states and 103569 transitions. [2020-10-29 14:02:47,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:02:47,032 INFO L276 IsEmpty]: Start isEmpty. Operand 69601 states and 103569 transitions. [2020-10-29 14:02:47,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-29 14:02:47,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:02:47,056 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] [2020-10-29 14:02:47,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 14:02:47,056 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:02:47,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:02:47,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1275327723, now seen corresponding path program 1 times [2020-10-29 14:02:47,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:02:47,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334962405] [2020-10-29 14:02:47,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:02:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:47,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:47,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:47,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:47,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:47,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:47,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:49,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:49,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:52,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:52,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 14:02:52,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:02:52,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 14:02:52,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:52,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:52,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:02:52,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 14:02:52,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 14:02:52,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:52,431 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:02:52,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:02:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:52,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:52,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:52,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:02:52,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:02:52,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:02:52,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:52,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:52,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:02:52,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:02:52,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:02:52,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:52,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:02:52,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334962405] [2020-10-29 14:02:52,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:02:52,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:02:52,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926968652] [2020-10-29 14:02:52,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:02:52,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:02:52,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:02:52,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:02:52,463 INFO L87 Difference]: Start difference. First operand 69601 states and 103569 transitions. Second operand 5 states. [2020-10-29 14:02:52,832 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 14:02:56,257 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 195