/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 06:08:13,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 06:08:13,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 06:08:13,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 06:08:13,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 06:08:13,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 06:08:13,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 06:08:13,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 06:08:13,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 06:08:13,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 06:08:13,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 06:08:13,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 06:08:13,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 06:08:13,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 06:08:13,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 06:08:13,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 06:08:13,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 06:08:13,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 06:08:13,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 06:08:13,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 06:08:13,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 06:08:13,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 06:08:13,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 06:08:13,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 06:08:13,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 06:08:13,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 06:08:13,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 06:08:13,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 06:08:13,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 06:08:13,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 06:08:13,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 06:08:13,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 06:08:13,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 06:08:13,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 06:08:13,723 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 06:08:13,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 06:08:13,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 06:08:13,725 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 06:08:13,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 06:08:13,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 06:08:13,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 06:08:13,728 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 06:08:13,756 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 06:08:13,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 06:08:13,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 06:08:13,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 06:08:13,758 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 06:08:13,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 06:08:13,758 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 06:08:13,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 06:08:13,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 06:08:13,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 06:08:13,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 06:08:13,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 06:08:13,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 06:08:13,760 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 06:08:13,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 06:08:13,761 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 06:08:13,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 06:08:13,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 06:08:13,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 06:08:13,762 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 06:08:13,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 06:08:13,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:08:13,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 06:08:13,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 06:08:13,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 06:08:13,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 06:08:13,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 06:08:13,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 06:08:13,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 06:08:13,764 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 06:08:14,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 06:08:14,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 06:08:14,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 06:08:14,252 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 06:08:14,253 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 06:08:14,254 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 06:08:14,345 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49fa035f2/19b47d4d5c784d34b4690c5ccacdc726/FLAGac7719af6 [2020-10-27 06:08:15,373 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 06:08:15,374 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 06:08:15,401 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49fa035f2/19b47d4d5c784d34b4690c5ccacdc726/FLAGac7719af6 [2020-10-27 06:08:15,462 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49fa035f2/19b47d4d5c784d34b4690c5ccacdc726 [2020-10-27 06:08:15,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 06:08:15,472 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 06:08:15,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 06:08:15,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 06:08:15,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 06:08:15,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:08:15" (1/1) ... [2020-10-27 06:08:15,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e70f18e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:15, skipping insertion in model container [2020-10-27 06:08:15,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:08:15" (1/1) ... [2020-10-27 06:08:15,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 06:08:15,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 06:08:17,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:08:17,154 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 06:08:17,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:08:18,021 INFO L208 MainTranslator]: Completed translation [2020-10-27 06:08:18,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:18 WrapperNode [2020-10-27 06:08:18,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 06:08:18,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 06:08:18,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 06:08:18,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 06:08:18,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:18" (1/1) ... [2020-10-27 06:08:18,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:18" (1/1) ... [2020-10-27 06:08:18,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:18" (1/1) ... [2020-10-27 06:08:18,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:18" (1/1) ... [2020-10-27 06:08:18,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:18" (1/1) ... [2020-10-27 06:08:18,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:18" (1/1) ... [2020-10-27 06:08:18,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:18" (1/1) ... [2020-10-27 06:08:18,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 06:08:18,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 06:08:18,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 06:08:18,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 06:08:18,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:08:18,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 06:08:18,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 06:08:18,384 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 06:08:18,384 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 06:08:18,385 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 06:08:18,385 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 06:08:18,385 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 06:08:18,385 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 06:08:18,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 06:08:18,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 06:08:18,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 06:08:18,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 06:08:18,386 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 06:08:18,386 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 06:08:18,387 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 06:08:18,387 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 06:08:18,387 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 06:08:18,387 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 06:08:18,387 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 06:08:18,387 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 06:08:18,388 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 06:08:18,388 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 06:08:18,388 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 06:08:18,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 06:08:18,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 06:08:18,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 06:08:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 06:08:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 06:08:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 06:08:22,254 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 06:08:22,255 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 06:08:22,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:08:22 BoogieIcfgContainer [2020-10-27 06:08:22,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 06:08:22,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 06:08:22,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 06:08:22,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 06:08:22,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:08:15" (1/3) ... [2020-10-27 06:08:22,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22317af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:08:22, skipping insertion in model container [2020-10-27 06:08:22,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:18" (2/3) ... [2020-10-27 06:08:22,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22317af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:08:22, skipping insertion in model container [2020-10-27 06:08:22,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:08:22" (3/3) ... [2020-10-27 06:08:22,271 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 06:08:22,284 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 06:08:22,290 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 06:08:22,304 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 06:08:22,342 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 06:08:22,343 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 06:08:22,343 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 06:08:22,343 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 06:08:22,343 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 06:08:22,343 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 06:08:22,343 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 06:08:22,344 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 06:08:22,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states. [2020-10-27 06:08:22,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-27 06:08:22,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:08:22,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:08:22,418 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:08:22,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:08:22,433 INFO L82 PathProgramCache]: Analyzing trace with hash -248347841, now seen corresponding path program 1 times [2020-10-27 06:08:22,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:08:22,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056936116] [2020-10-27 06:08:22,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:08:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:23,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:23,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:24,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:25,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:25,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:25,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:26,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:26,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:26,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:26,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:27,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:27,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:27,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:27,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:28,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:28,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-27 06:08:28,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 06:08:28,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-27 06:08:28,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:28,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:08:28,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:08:28,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-27 06:08:28,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 06:08:29,705 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 06:08:29,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:08:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:29,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:29,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:29,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:08:29,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:08:29,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 06:08:29,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:29,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:08:29,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:08:29,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:08:29,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:08:30,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:08:30,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056936116] [2020-10-27 06:08:30,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:08:30,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:08:30,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458190425] [2020-10-27 06:08:30,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:08:30,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:08:30,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:08:30,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:08:30,145 INFO L87 Difference]: Start difference. First operand 1031 states. Second operand 5 states. [2020-10-27 06:08:41,501 WARN L193 SmtUtils]: Spent 967.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:08:44,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:08:44,525 INFO L93 Difference]: Finished difference Result 2977 states and 5384 transitions. [2020-10-27 06:08:44,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 06:08:44,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 328 [2020-10-27 06:08:44,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:08:44,579 INFO L225 Difference]: With dead ends: 2977 [2020-10-27 06:08:44,579 INFO L226 Difference]: Without dead ends: 1971 [2020-10-27 06:08:44,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:08:44,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1971 states. [2020-10-27 06:08:44,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1971 to 1876. [2020-10-27 06:08:44,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1876 states. [2020-10-27 06:08:44,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1876 states to 1876 states and 2868 transitions. [2020-10-27 06:08:44,779 INFO L78 Accepts]: Start accepts. Automaton has 1876 states and 2868 transitions. Word has length 328 [2020-10-27 06:08:44,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:08:44,782 INFO L481 AbstractCegarLoop]: Abstraction has 1876 states and 2868 transitions. [2020-10-27 06:08:44,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:08:44,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1876 states and 2868 transitions. [2020-10-27 06:08:44,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-27 06:08:44,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:08:44,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:08:44,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 06:08:44,797 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:08:44,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:08:44,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1944427260, now seen corresponding path program 1 times [2020-10-27 06:08:44,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:08:44,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472785529] [2020-10-27 06:08:44,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:08:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:44,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:45,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:45,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:45,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:45,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:45,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:46,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:46,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:46,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:46,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:47,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:47,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:47,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:47,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:48,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:48,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:49,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:49,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-27 06:08:49,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 06:08:49,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 06:08:49,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:49,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:08:49,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:08:49,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-27 06:08:49,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:51,043 WARN L193 SmtUtils]: Spent 922.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 06:08:51,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:08:51,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:51,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:51,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:51,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:08:51,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:08:51,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 06:08:51,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:51,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:08:51,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:08:51,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:08:51,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:51,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:08:51,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472785529] [2020-10-27 06:08:51,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:08:51,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:08:51,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625233062] [2020-10-27 06:08:51,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:08:51,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:08:51,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:08:51,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:08:51,369 INFO L87 Difference]: Start difference. First operand 1876 states and 2868 transitions. Second operand 5 states. [2020-10-27 06:09:01,041 WARN L193 SmtUtils]: Spent 867.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:09:04,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:09:04,030 INFO L93 Difference]: Finished difference Result 5519 states and 8420 transitions. [2020-10-27 06:09:04,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:09:04,031 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 330 [2020-10-27 06:09:04,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:09:04,054 INFO L225 Difference]: With dead ends: 5519 [2020-10-27 06:09:04,055 INFO L226 Difference]: Without dead ends: 3672 [2020-10-27 06:09:04,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:09:04,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3672 states. [2020-10-27 06:09:04,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3672 to 3583. [2020-10-27 06:09:04,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3583 states. [2020-10-27 06:09:04,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 5449 transitions. [2020-10-27 06:09:04,245 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 5449 transitions. Word has length 330 [2020-10-27 06:09:04,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:09:04,246 INFO L481 AbstractCegarLoop]: Abstraction has 3583 states and 5449 transitions. [2020-10-27 06:09:04,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:09:04,247 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 5449 transitions. [2020-10-27 06:09:04,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-27 06:09:04,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:09:04,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:09:04,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 06:09:04,259 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:09:04,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:09:04,260 INFO L82 PathProgramCache]: Analyzing trace with hash 814920256, now seen corresponding path program 1 times [2020-10-27 06:09:04,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:09:04,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601237990] [2020-10-27 06:09:04,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:09:04,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:04,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:04,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:04,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:05,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:06,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:06,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:06,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:07,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:07,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:07,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:07,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:07,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:07,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:08,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:08,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:09,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:09,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-27 06:09:09,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 06:09:09,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 06:09:09,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:09,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:09:09,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:09:09,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-27 06:09:09,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:10,356 WARN L193 SmtUtils]: Spent 820.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 06:09:10,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:09:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:10,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:10,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:10,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:09:10,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:09:10,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 06:09:10,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:10,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:09:10,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:09:10,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:09:10,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:10,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:09:10,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601237990] [2020-10-27 06:09:10,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:09:10,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:09:10,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717973132] [2020-10-27 06:09:10,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:09:10,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:09:10,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:09:10,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:09:10,736 INFO L87 Difference]: Start difference. First operand 3583 states and 5449 transitions. Second operand 5 states. [2020-10-27 06:09:19,989 WARN L193 SmtUtils]: Spent 916.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:09:22,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:09:22,555 INFO L93 Difference]: Finished difference Result 10461 states and 15863 transitions. [2020-10-27 06:09:22,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:09:22,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 332 [2020-10-27 06:09:22,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:09:22,588 INFO L225 Difference]: With dead ends: 10461 [2020-10-27 06:09:22,588 INFO L226 Difference]: Without dead ends: 6977 [2020-10-27 06:09:22,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:09:22,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6977 states. [2020-10-27 06:09:22,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6977 to 6877. [2020-10-27 06:09:22,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6877 states. [2020-10-27 06:09:22,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6877 states to 6877 states and 10388 transitions. [2020-10-27 06:09:22,973 INFO L78 Accepts]: Start accepts. Automaton has 6877 states and 10388 transitions. Word has length 332 [2020-10-27 06:09:22,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:09:22,976 INFO L481 AbstractCegarLoop]: Abstraction has 6877 states and 10388 transitions. [2020-10-27 06:09:22,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:09:22,976 INFO L276 IsEmpty]: Start isEmpty. Operand 6877 states and 10388 transitions. [2020-10-27 06:09:22,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-27 06:09:22,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:09:22,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:09:22,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 06:09:22,995 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:09:22,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:09:22,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1708481159, now seen corresponding path program 1 times [2020-10-27 06:09:22,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:09:22,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073598346] [2020-10-27 06:09:22,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:09:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:23,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:23,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:23,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:23,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:23,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:23,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:23,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:23,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:26,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:26,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:27,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:27,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:27,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:27,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:28,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:28,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 342 [2020-10-27 06:09:28,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 06:09:28,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-27 06:09:28,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:28,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:09:28,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:09:28,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 06:09:28,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:09:29,280 WARN L193 SmtUtils]: Spent 906.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 06:09:29,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:09:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:29,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:29,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:29,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:09:29,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:09:29,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 06:09:29,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:29,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:09:29,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:09:29,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:09:29,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:29,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:09:29,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073598346] [2020-10-27 06:09:29,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:09:29,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:09:29,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65097683] [2020-10-27 06:09:29,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:09:29,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:09:29,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:09:29,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:09:29,489 INFO L87 Difference]: Start difference. First operand 6877 states and 10388 transitions. Second operand 5 states. [2020-10-27 06:09:39,803 WARN L193 SmtUtils]: Spent 879.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:09:42,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:09:42,908 INFO L93 Difference]: Finished difference Result 20148 states and 30336 transitions. [2020-10-27 06:09:42,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:09:42,909 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 334 [2020-10-27 06:09:42,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:09:42,967 INFO L225 Difference]: With dead ends: 20148 [2020-10-27 06:09:42,968 INFO L226 Difference]: Without dead ends: 13509 [2020-10-27 06:09:42,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:09:42,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13509 states. [2020-10-27 06:09:43,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13509 to 13445. [2020-10-27 06:09:43,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13445 states. [2020-10-27 06:09:43,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13445 states to 13445 states and 20160 transitions. [2020-10-27 06:09:43,726 INFO L78 Accepts]: Start accepts. Automaton has 13445 states and 20160 transitions. Word has length 334 [2020-10-27 06:09:43,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:09:43,727 INFO L481 AbstractCegarLoop]: Abstraction has 13445 states and 20160 transitions. [2020-10-27 06:09:43,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:09:43,727 INFO L276 IsEmpty]: Start isEmpty. Operand 13445 states and 20160 transitions. [2020-10-27 06:09:43,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-27 06:09:43,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:09:43,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:09:43,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 06:09:43,759 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:09:43,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:09:43,760 INFO L82 PathProgramCache]: Analyzing trace with hash -371740039, now seen corresponding path program 1 times [2020-10-27 06:09:43,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:09:43,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78425159] [2020-10-27 06:09:43,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:09:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:43,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:43,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:43,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:44,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:44,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:44,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:44,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:44,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:44,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:45,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:45,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:45,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:45,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:48,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:48,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-27 06:09:48,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 06:09:48,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 06:09:48,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:48,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:09:48,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:09:48,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-27 06:09:48,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 06:09:49,938 WARN L193 SmtUtils]: Spent 895.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 06:09:49,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:09:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:49,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:49,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:49,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:09:49,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:09:49,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 06:09:49,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:49,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:09:49,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:09:49,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:09:49,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:50,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:09:50,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78425159] [2020-10-27 06:09:50,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:09:50,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:09:50,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515060115] [2020-10-27 06:09:50,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:09:50,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:09:50,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:09:50,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:09:50,135 INFO L87 Difference]: Start difference. First operand 13445 states and 20160 transitions. Second operand 5 states. [2020-10-27 06:10:00,319 WARN L193 SmtUtils]: Spent 987.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:10:03,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:10:03,310 INFO L93 Difference]: Finished difference Result 39294 states and 58727 transitions. [2020-10-27 06:10:03,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:10:03,311 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 336 [2020-10-27 06:10:03,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:10:03,372 INFO L225 Difference]: With dead ends: 39294 [2020-10-27 06:10:03,372 INFO L226 Difference]: Without dead ends: 26222 [2020-10-27 06:10:03,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:10:03,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26222 states. [2020-10-27 06:10:04,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26222 to 26090. [2020-10-27 06:10:04,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26090 states. [2020-10-27 06:10:04,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26090 states to 26090 states and 38777 transitions. [2020-10-27 06:10:04,743 INFO L78 Accepts]: Start accepts. Automaton has 26090 states and 38777 transitions. Word has length 336 [2020-10-27 06:10:04,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:10:04,744 INFO L481 AbstractCegarLoop]: Abstraction has 26090 states and 38777 transitions. [2020-10-27 06:10:04,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:10:04,744 INFO L276 IsEmpty]: Start isEmpty. Operand 26090 states and 38777 transitions. [2020-10-27 06:10:04,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-27 06:10:04,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:10:04,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:10:04,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 06:10:04,803 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:10:04,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:10:04,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1066009825, now seen corresponding path program 1 times [2020-10-27 06:10:04,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:10:04,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815650307] [2020-10-27 06:10:04,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:10:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:04,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:04,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:05,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:05,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:05,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:05,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:05,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:05,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:05,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:05,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:06,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:06,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:06,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:07,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:09,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:09,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-27 06:10:09,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 06:10:09,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 06:10:09,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:09,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:10:09,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:10:09,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-27 06:10:09,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:10,911 WARN L193 SmtUtils]: Spent 861.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 06:10:10,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:10:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:10,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:10,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:10,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:10:10,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:10:10,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 06:10:10,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:10,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:10:10,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:10:10,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:10:10,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:11,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:10:11,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815650307] [2020-10-27 06:10:11,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:10:11,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:10:11,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490841336] [2020-10-27 06:10:11,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:10:11,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:10:11,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:10:11,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:10:11,097 INFO L87 Difference]: Start difference. First operand 26090 states and 38777 transitions. Second operand 5 states. [2020-10-27 06:10:21,436 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:10:24,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:10:24,769 INFO L93 Difference]: Finished difference Result 76857 states and 114006 transitions. [2020-10-27 06:10:24,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:10:24,772 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 338 [2020-10-27 06:10:24,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:10:24,890 INFO L225 Difference]: With dead ends: 76857 [2020-10-27 06:10:24,891 INFO L226 Difference]: Without dead ends: 51109 [2020-10-27 06:10:24,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:10:25,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51109 states. [2020-10-27 06:10:27,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51109 to 50977. [2020-10-27 06:10:27,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50977 states. [2020-10-27 06:10:27,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50977 states to 50977 states and 75184 transitions. [2020-10-27 06:10:27,468 INFO L78 Accepts]: Start accepts. Automaton has 50977 states and 75184 transitions. Word has length 338 [2020-10-27 06:10:27,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:10:27,468 INFO L481 AbstractCegarLoop]: Abstraction has 50977 states and 75184 transitions. [2020-10-27 06:10:27,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:10:27,468 INFO L276 IsEmpty]: Start isEmpty. Operand 50977 states and 75184 transitions. [2020-10-27 06:10:27,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-27 06:10:27,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:10:27,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:10:27,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 06:10:27,532 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:10:27,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:10:27,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1613019350, now seen corresponding path program 1 times [2020-10-27 06:10:27,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:10:27,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611325318] [2020-10-27 06:10:27,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:10:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:27,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:28,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:28,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:28,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:28,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:28,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:28,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:28,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:28,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:29,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:29,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:29,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:29,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:29,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:32,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:32,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:32,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-27 06:10:32,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 06:10:32,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-27 06:10:32,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:32,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:10:32,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:10:32,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-27 06:10:32,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:33,883 WARN L193 SmtUtils]: Spent 838.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 06:10:33,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:10:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:33,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:33,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:33,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:10:33,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:10:33,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 06:10:33,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:33,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:10:33,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:10:33,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:10:33,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:34,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:10:34,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611325318] [2020-10-27 06:10:34,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:10:34,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:10:34,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581940397] [2020-10-27 06:10:34,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:10:34,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:10:34,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:10:34,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:10:34,052 INFO L87 Difference]: Start difference. First operand 50977 states and 75184 transitions. Second operand 5 states. [2020-10-27 06:10:48,224 WARN L193 SmtUtils]: Spent 931.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:10:52,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:10:52,672 INFO L93 Difference]: Finished difference Result 149570 states and 219953 transitions. [2020-10-27 06:10:52,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:10:52,673 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 340 [2020-10-27 06:10:52,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:10:52,839 INFO L225 Difference]: With dead ends: 149570 [2020-10-27 06:10:52,839 INFO L226 Difference]: Without dead ends: 100211 [2020-10-27 06:10:52,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:10:53,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100211 states. [2020-10-27 06:10:58,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100211 to 100095. [2020-10-27 06:10:58,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100095 states. [2020-10-27 06:10:58,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100095 states to 100095 states and 146461 transitions. [2020-10-27 06:10:58,606 INFO L78 Accepts]: Start accepts. Automaton has 100095 states and 146461 transitions. Word has length 340 [2020-10-27 06:10:58,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:10:58,606 INFO L481 AbstractCegarLoop]: Abstraction has 100095 states and 146461 transitions. [2020-10-27 06:10:58,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:10:58,606 INFO L276 IsEmpty]: Start isEmpty. Operand 100095 states and 146461 transitions. [2020-10-27 06:10:58,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-27 06:10:58,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:10:58,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:10:58,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 06:10:58,706 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:10:58,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:10:58,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1237808162, now seen corresponding path program 1 times [2020-10-27 06:10:58,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:10:58,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136922317] [2020-10-27 06:10:58,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:10:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:59,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:59,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:59,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:59,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:59,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:59,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:59,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:59,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:59,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:59,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:59,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:59,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:59,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:59,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:59,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:03,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:11:03,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-27 06:11:03,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 06:11:03,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 06:11:03,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:11:03,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:11:03,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:11:03,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-27 06:11:03,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 06:11:04,955 WARN L193 SmtUtils]: Spent 935.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 06:11:04,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:11:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:11:04,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:04,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:11:04,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:11:04,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:11:04,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 06:11:04,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:11:04,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:11:04,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:11:04,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:11:04,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:11:05,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:11:05,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136922317] [2020-10-27 06:11:05,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:11:05,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:11:05,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545595820] [2020-10-27 06:11:05,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:11:05,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:11:05,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:11:05,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:11:05,144 INFO L87 Difference]: Start difference. First operand 100095 states and 146461 transitions. Second operand 5 states. [2020-10-27 06:11:24,628 WARN L193 SmtUtils]: Spent 940.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:11:31,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:11:31,059 INFO L93 Difference]: Finished difference Result 292997 states and 427545 transitions. [2020-10-27 06:11:31,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:11:31,060 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 342 [2020-10-27 06:11:31,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:11:31,536 INFO L225 Difference]: With dead ends: 292997 [2020-10-27 06:11:31,536 INFO L226 Difference]: Without dead ends: 196213 [2020-10-27 06:11:31,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:11:31,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196213 states. [2020-10-27 06:11:43,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196213 to 196069. [2020-10-27 06:11:43,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196069 states. [2020-10-27 06:11:44,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196069 states to 196069 states and 284631 transitions. [2020-10-27 06:11:44,358 INFO L78 Accepts]: Start accepts. Automaton has 196069 states and 284631 transitions. Word has length 342 [2020-10-27 06:11:44,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:11:44,358 INFO L481 AbstractCegarLoop]: Abstraction has 196069 states and 284631 transitions. [2020-10-27 06:11:44,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:11:44,359 INFO L276 IsEmpty]: Start isEmpty. Operand 196069 states and 284631 transitions. [2020-10-27 06:11:44,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-27 06:11:44,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:11:44,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:11:44,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 06:11:44,510 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:11:44,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:11:44,511 INFO L82 PathProgramCache]: Analyzing trace with hash -642397740, now seen corresponding path program 1 times [2020-10-27 06:11:44,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:11:44,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353543322] [2020-10-27 06:11:44,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:11:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:11:44,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:44,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:45,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:45,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:45,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:45,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:45,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:45,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:45,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:45,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:45,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking...