/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:48:04,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:48:04,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:48:04,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:48:04,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:48:04,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:48:04,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:48:04,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:48:04,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:48:04,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:48:04,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:48:04,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:48:04,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:48:04,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:48:04,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:48:04,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:48:04,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:48:04,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:48:04,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:48:04,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:48:04,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:48:04,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:48:04,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:48:04,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:48:04,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:48:04,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:48:04,603 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:48:04,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:48:04,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:48:04,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:48:04,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:48:04,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:48:04,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:48:04,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:48:04,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:48:04,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:48:04,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:48:04,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:48:04,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:48:04,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:48:04,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:48:04,629 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 23:48:04,690 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:48:04,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:48:04,696 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:48:04,697 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:48:04,697 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:48:04,697 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:48:04,698 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:48:04,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:48:04,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:48:04,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:48:04,698 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:48:04,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:48:04,699 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:48:04,700 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:48:04,700 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:48:04,700 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:48:04,700 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:48:04,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:48:04,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:48:04,718 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:48:04,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:48:04,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:48:04,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:48:04,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:48:04,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:48:04,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:48:04,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:48:04,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:48:04,720 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:48:04,721 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:48:05,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:48:05,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:48:05,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:48:05,213 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:48:05,214 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:48:05,215 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-27 23:48:05,303 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8e52d6fb/f88683c2da92485f8ecfe60086f497c6/FLAGd7d625ff7 [2020-10-27 23:48:06,017 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:48:06,018 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-27 23:48:06,035 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8e52d6fb/f88683c2da92485f8ecfe60086f497c6/FLAGd7d625ff7 [2020-10-27 23:48:06,246 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8e52d6fb/f88683c2da92485f8ecfe60086f497c6 [2020-10-27 23:48:06,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:48:06,257 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:48:06,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:48:06,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:48:06,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:48:06,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:48:06" (1/1) ... [2020-10-27 23:48:06,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65c17f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:06, skipping insertion in model container [2020-10-27 23:48:06,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:48:06" (1/1) ... [2020-10-27 23:48:06,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:48:06,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:48:06,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:48:06,831 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:48:06,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:48:07,011 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:48:07,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:07 WrapperNode [2020-10-27 23:48:07,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:48:07,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:48:07,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:48:07,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:48:07,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:07" (1/1) ... [2020-10-27 23:48:07,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:07" (1/1) ... [2020-10-27 23:48:07,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:07" (1/1) ... [2020-10-27 23:48:07,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:07" (1/1) ... [2020-10-27 23:48:07,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:07" (1/1) ... [2020-10-27 23:48:07,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:07" (1/1) ... [2020-10-27 23:48:07,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:07" (1/1) ... [2020-10-27 23:48:07,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:48:07,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:48:07,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:48:07,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:48:07,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:07" (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 23:48:07,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:48:07,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:48:07,244 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:48:07,244 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:48:07,244 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:48:07,244 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:48:07,244 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:48:07,244 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:48:07,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:48:07,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:48:07,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:48:07,245 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:48:07,245 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:48:07,245 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:48:07,246 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:48:07,246 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:48:07,246 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:48:07,246 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:48:07,246 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:48:07,246 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 23:48:07,247 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:48:07,247 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:48:07,247 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:48:07,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:48:07,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:48:07,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:48:07,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:48:07,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:48:07,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:48:08,583 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:48:08,584 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:48:08,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:48:08 BoogieIcfgContainer [2020-10-27 23:48:08,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:48:08,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:48:08,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:48:08,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:48:08,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:48:06" (1/3) ... [2020-10-27 23:48:08,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3144d8c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:48:08, skipping insertion in model container [2020-10-27 23:48:08,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:07" (2/3) ... [2020-10-27 23:48:08,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3144d8c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:48:08, skipping insertion in model container [2020-10-27 23:48:08,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:48:08" (3/3) ... [2020-10-27 23:48:08,595 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-27 23:48:08,615 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:48:08,629 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:48:08,669 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:48:08,721 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:48:08,722 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:48:08,722 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:48:08,722 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:48:08,722 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:48:08,722 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:48:08,722 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:48:08,722 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:48:08,762 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-10-27 23:48:08,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-27 23:48:08,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:48:08,777 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] [2020-10-27 23:48:08,777 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:48:08,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:48:08,784 INFO L82 PathProgramCache]: Analyzing trace with hash 685283961, now seen corresponding path program 1 times [2020-10-27 23:48:08,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:48:08,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904436695] [2020-10-27 23:48:08,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:48:09,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:09,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:09,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:09,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:09,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:09,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:10,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:10,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:11,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:11,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:14,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:14,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 23:48:14,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:48:14,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 23:48:14,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:14,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:48:14,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 23:48:14,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 23:48:14,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:48:14,851 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:48:14,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:48:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:14,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:14,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:14,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:48:14,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:48:14,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:48:14,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:14,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:48:14,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:48:14,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:48:14,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:14,918 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 23:48:14,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904436695] [2020-10-27 23:48:14,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:48:14,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:48:14,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760045733] [2020-10-27 23:48:14,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:48:14,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:48:14,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:48:14,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:48:14,947 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 5 states. [2020-10-27 23:48:16,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:48:16,520 INFO L93 Difference]: Finished difference Result 294 states and 474 transitions. [2020-10-27 23:48:16,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:48:16,522 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-10-27 23:48:16,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:48:16,537 INFO L225 Difference]: With dead ends: 294 [2020-10-27 23:48:16,538 INFO L226 Difference]: Without dead ends: 217 [2020-10-27 23:48:16,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:48:16,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-27 23:48:16,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-10-27 23:48:16,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-27 23:48:16,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 350 transitions. [2020-10-27 23:48:16,621 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 350 transitions. Word has length 84 [2020-10-27 23:48:16,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:48:16,622 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 350 transitions. [2020-10-27 23:48:16,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:48:16,622 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 350 transitions. [2020-10-27 23:48:16,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 23:48:16,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:48:16,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:48:16,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:48:16,633 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:48:16,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:48:16,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1871463864, now seen corresponding path program 1 times [2020-10-27 23:48:16,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:48:16,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661318997] [2020-10-27 23:48:16,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:48:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:16,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:16,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:16,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:16,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:16,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:17,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:17,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:17,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:19,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:21,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:21,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 23:48:21,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:48:21,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 23:48:21,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:21,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:48:21,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-27 23:48:21,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 23:48:21,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:22,141 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:48:22,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:48:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:22,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:22,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:22,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:48:22,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:48:22,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:48:22,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:22,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:48:22,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:48:22,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:48:22,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:22,184 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 23:48:22,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661318997] [2020-10-27 23:48:22,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:48:22,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:48:22,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714224900] [2020-10-27 23:48:22,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:48:22,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:48:22,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:48:22,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:48:22,188 INFO L87 Difference]: Start difference. First operand 217 states and 350 transitions. Second operand 4 states. [2020-10-27 23:48:23,706 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 23:48:23,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:48:23,712 INFO L93 Difference]: Finished difference Result 450 states and 710 transitions. [2020-10-27 23:48:23,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:48:23,713 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-10-27 23:48:23,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:48:23,720 INFO L225 Difference]: With dead ends: 450 [2020-10-27 23:48:23,720 INFO L226 Difference]: Without dead ends: 328 [2020-10-27 23:48:23,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:48:23,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-10-27 23:48:23,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 325. [2020-10-27 23:48:23,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2020-10-27 23:48:23,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 514 transitions. [2020-10-27 23:48:23,786 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 514 transitions. Word has length 86 [2020-10-27 23:48:23,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:48:23,788 INFO L481 AbstractCegarLoop]: Abstraction has 325 states and 514 transitions. [2020-10-27 23:48:23,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:48:23,788 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 514 transitions. [2020-10-27 23:48:23,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 23:48:23,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:48:23,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:48:23,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:48:23,795 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:48:23,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:48:23,796 INFO L82 PathProgramCache]: Analyzing trace with hash -467422896, now seen corresponding path program 1 times [2020-10-27 23:48:23,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:48:23,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017238718] [2020-10-27 23:48:23,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:48:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:23,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:23,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:23,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:24,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:24,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:24,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:24,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:24,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:24,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:28,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:28,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:28,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 23:48:28,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:48:28,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 23:48:28,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:28,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:48:28,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 23:48:28,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 23:48:28,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:29,142 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:48:29,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:48:29,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:29,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:29,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:29,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:48:29,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:48:29,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:48:29,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:29,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:48:29,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:48:29,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:48:29,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:29,189 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 23:48:29,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017238718] [2020-10-27 23:48:29,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:48:29,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:48:29,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634336461] [2020-10-27 23:48:29,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:48:29,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:48:29,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:48:29,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:48:29,194 INFO L87 Difference]: Start difference. First operand 325 states and 514 transitions. Second operand 4 states. [2020-10-27 23:48:29,420 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 23:48:30,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:48:30,604 INFO L93 Difference]: Finished difference Result 677 states and 1056 transitions. [2020-10-27 23:48:30,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:48:30,605 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-10-27 23:48:30,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:48:30,610 INFO L225 Difference]: With dead ends: 677 [2020-10-27 23:48:30,610 INFO L226 Difference]: Without dead ends: 507 [2020-10-27 23:48:30,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:48:30,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-10-27 23:48:30,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 488. [2020-10-27 23:48:30,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2020-10-27 23:48:30,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 763 transitions. [2020-10-27 23:48:30,676 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 763 transitions. Word has length 87 [2020-10-27 23:48:30,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:48:30,676 INFO L481 AbstractCegarLoop]: Abstraction has 488 states and 763 transitions. [2020-10-27 23:48:30,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:48:30,676 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 763 transitions. [2020-10-27 23:48:30,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 23:48:30,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:48:30,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:48:30,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:48:30,681 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:48:30,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:48:30,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1137089158, now seen corresponding path program 1 times [2020-10-27 23:48:30,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:48:30,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392358512] [2020-10-27 23:48:30,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:48:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:30,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:30,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:30,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:30,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:30,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:30,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:31,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:31,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:33,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:33,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:35,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:35,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 23:48:35,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:48:35,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 23:48:35,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:35,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:48:35,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 23:48:35,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 23:48:35,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:35,990 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:48:35,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:48:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:36,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:36,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:36,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:48:36,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:48:36,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:48:36,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:36,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:48:36,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:48:36,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:48:36,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:36,061 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 23:48:36,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392358512] [2020-10-27 23:48:36,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:48:36,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:48:36,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868170480] [2020-10-27 23:48:36,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:48:36,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:48:36,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:48:36,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:48:36,064 INFO L87 Difference]: Start difference. First operand 488 states and 763 transitions. Second operand 4 states. [2020-10-27 23:48:36,291 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 23:48:37,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:48:37,266 INFO L93 Difference]: Finished difference Result 1132 states and 1747 transitions. [2020-10-27 23:48:37,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:48:37,267 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-10-27 23:48:37,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:48:37,273 INFO L225 Difference]: With dead ends: 1132 [2020-10-27 23:48:37,274 INFO L226 Difference]: Without dead ends: 863 [2020-10-27 23:48:37,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:48:37,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2020-10-27 23:48:37,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 836. [2020-10-27 23:48:37,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-10-27 23:48:37,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1290 transitions. [2020-10-27 23:48:37,325 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1290 transitions. Word has length 88 [2020-10-27 23:48:37,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:48:37,326 INFO L481 AbstractCegarLoop]: Abstraction has 836 states and 1290 transitions. [2020-10-27 23:48:37,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:48:37,326 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1290 transitions. [2020-10-27 23:48:37,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-27 23:48:37,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:48:37,330 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] [2020-10-27 23:48:37,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:48:37,330 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:48:37,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:48:37,331 INFO L82 PathProgramCache]: Analyzing trace with hash 776499818, now seen corresponding path program 1 times [2020-10-27 23:48:37,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:48:37,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995778814] [2020-10-27 23:48:37,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:48:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:37,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:37,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:37,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:37,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:37,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:37,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:37,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:38,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:40,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:40,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:42,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:42,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 23:48:42,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:48:42,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 23:48:42,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:42,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:48:42,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-27 23:48:42,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 23:48:42,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:42,606 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:48:42,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:48:42,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:42,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:42,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:42,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:48:42,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:48:42,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 23:48:42,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:42,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:48:42,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:48:42,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:48:42,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:42,683 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 23:48:42,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995778814] [2020-10-27 23:48:42,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:48:42,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:48:42,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462610219] [2020-10-27 23:48:42,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:48:42,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:48:42,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:48:42,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:48:42,685 INFO L87 Difference]: Start difference. First operand 836 states and 1290 transitions. Second operand 4 states. [2020-10-27 23:48:42,961 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 23:48:44,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:48:44,064 INFO L93 Difference]: Finished difference Result 1846 states and 2808 transitions. [2020-10-27 23:48:44,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:48:44,065 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-10-27 23:48:44,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:48:44,075 INFO L225 Difference]: With dead ends: 1846 [2020-10-27 23:48:44,076 INFO L226 Difference]: Without dead ends: 1455 [2020-10-27 23:48:44,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:48:44,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2020-10-27 23:48:44,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1404. [2020-10-27 23:48:44,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1404 states. [2020-10-27 23:48:44,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 2132 transitions. [2020-10-27 23:48:44,183 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 2132 transitions. Word has length 89 [2020-10-27 23:48:44,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:48:44,183 INFO L481 AbstractCegarLoop]: Abstraction has 1404 states and 2132 transitions. [2020-10-27 23:48:44,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:48:44,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 2132 transitions. [2020-10-27 23:48:44,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 23:48:44,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:48:44,188 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] [2020-10-27 23:48:44,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:48:44,188 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:48:44,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:48:44,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1565321008, now seen corresponding path program 1 times [2020-10-27 23:48:44,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:48:44,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472530698] [2020-10-27 23:48:44,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:48:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:44,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:44,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:44,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:44,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:44,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:44,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:44,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:45,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:49,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:49,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 23:48:49,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:48:49,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 23:48:49,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:49,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:48:49,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-27 23:48:49,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 23:48:49,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:49,470 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:48:49,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:48:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:49,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:49,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:49,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:48:49,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:48:49,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:48:49,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:49,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:48:49,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:48:49,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:48:49,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:49,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:48:49,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472530698] [2020-10-27 23:48:49,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:48:49,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:48:49,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585198671] [2020-10-27 23:48:49,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:48:49,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:48:49,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:48:49,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:48:49,524 INFO L87 Difference]: Start difference. First operand 1404 states and 2132 transitions. Second operand 4 states. [2020-10-27 23:48:49,738 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 23:48:51,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:48:51,038 INFO L93 Difference]: Finished difference Result 3386 states and 5084 transitions. [2020-10-27 23:48:51,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:48:51,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-10-27 23:48:51,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:48:51,054 INFO L225 Difference]: With dead ends: 3386 [2020-10-27 23:48:51,054 INFO L226 Difference]: Without dead ends: 2583 [2020-10-27 23:48:51,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:48:51,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2583 states. [2020-10-27 23:48:51,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2583 to 2484. [2020-10-27 23:48:51,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2484 states. [2020-10-27 23:48:51,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3712 transitions. [2020-10-27 23:48:51,214 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3712 transitions. Word has length 90 [2020-10-27 23:48:51,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:48:51,215 INFO L481 AbstractCegarLoop]: Abstraction has 2484 states and 3712 transitions. [2020-10-27 23:48:51,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:48:51,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3712 transitions. [2020-10-27 23:48:51,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 23:48:51,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:48:51,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:48:51,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:48:51,223 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:48:51,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:48:51,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1740955582, now seen corresponding path program 1 times [2020-10-27 23:48:51,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:48:51,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747313816] [2020-10-27 23:48:51,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:48:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:51,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:51,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:51,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:51,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:51,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:51,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:52,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:56,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:56,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 23:48:56,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:48:56,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 23:48:56,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:56,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:48:56,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 23:48:56,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 23:48:56,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:56,486 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:48:56,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:48:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:56,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:56,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:48:56,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:48:56,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:48:56,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:48:56,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:48:56,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:48:56,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:48:56,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:48:56,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:48:56,532 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 23:48:56,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747313816] [2020-10-27 23:48:56,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:48:56,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:48:56,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720450579] [2020-10-27 23:48:56,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:48:56,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:48:56,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:48:56,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:48:56,536 INFO L87 Difference]: Start difference. First operand 2484 states and 3712 transitions. Second operand 4 states. [2020-10-27 23:48:56,761 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 23:48:58,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:48:58,199 INFO L93 Difference]: Finished difference Result 6502 states and 9636 transitions. [2020-10-27 23:48:58,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:48:58,200 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2020-10-27 23:48:58,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:48:58,225 INFO L225 Difference]: With dead ends: 6502 [2020-10-27 23:48:58,225 INFO L226 Difference]: Without dead ends: 4707 [2020-10-27 23:48:58,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:48:58,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4707 states. [2020-10-27 23:48:58,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4707 to 4512. [2020-10-27 23:48:58,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4512 states. [2020-10-27 23:48:58,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4512 states to 4512 states and 6632 transitions. [2020-10-27 23:48:58,526 INFO L78 Accepts]: Start accepts. Automaton has 4512 states and 6632 transitions. Word has length 91 [2020-10-27 23:48:58,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:48:58,527 INFO L481 AbstractCegarLoop]: Abstraction has 4512 states and 6632 transitions. [2020-10-27 23:48:58,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:48:58,527 INFO L276 IsEmpty]: Start isEmpty. Operand 4512 states and 6632 transitions. [2020-10-27 23:48:58,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 23:48:58,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:48:58,540 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] [2020-10-27 23:48:58,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:48:58,541 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:48:58,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:48:58,541 INFO L82 PathProgramCache]: Analyzing trace with hash 894074886, now seen corresponding path program 1 times [2020-10-27 23:48:58,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:48:58,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546780235] [2020-10-27 23:48:58,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:48:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:48:58,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:58,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:58,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:58,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:48:58,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:00,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:00,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:00,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:03,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:03,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 23:49:03,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:49:03,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 23:49:03,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:03,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:49:03,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 23:49:03,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 23:49:03,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:03,769 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:49:03,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:49:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:03,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:03,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:03,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:49:03,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:49:03,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:49:03,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:03,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:49:03,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:49:03,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:49:03,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:03,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:49:03,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546780235] [2020-10-27 23:49:03,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:49:03,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:49:03,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574104224] [2020-10-27 23:49:03,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:49:03,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:49:03,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:49:03,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:49:03,809 INFO L87 Difference]: Start difference. First operand 4512 states and 6632 transitions. Second operand 4 states. [2020-10-27 23:49:04,021 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 23:49:05,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:49:05,539 INFO L93 Difference]: Finished difference Result 11542 states and 16844 transitions. [2020-10-27 23:49:05,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:49:05,539 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2020-10-27 23:49:05,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:49:05,583 INFO L225 Difference]: With dead ends: 11542 [2020-10-27 23:49:05,584 INFO L226 Difference]: Without dead ends: 8065 [2020-10-27 23:49:05,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:49:05,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8065 states. [2020-10-27 23:49:06,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8065 to 8030. [2020-10-27 23:49:06,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8030 states. [2020-10-27 23:49:06,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8030 states to 8030 states and 11592 transitions. [2020-10-27 23:49:06,149 INFO L78 Accepts]: Start accepts. Automaton has 8030 states and 11592 transitions. Word has length 92 [2020-10-27 23:49:06,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:49:06,150 INFO L481 AbstractCegarLoop]: Abstraction has 8030 states and 11592 transitions. [2020-10-27 23:49:06,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:49:06,150 INFO L276 IsEmpty]: Start isEmpty. Operand 8030 states and 11592 transitions. [2020-10-27 23:49:06,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 23:49:06,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:49:06,170 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] [2020-10-27 23:49:06,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:49:06,171 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:49:06,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:49:06,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1882055100, now seen corresponding path program 1 times [2020-10-27 23:49:06,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:49:06,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969966735] [2020-10-27 23:49:06,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:49:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:06,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:06,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:06,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:06,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:06,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:08,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:08,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:08,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:11,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:11,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 23:49:11,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:49:11,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 23:49:11,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:11,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:49:11,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-27 23:49:11,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 23:49:11,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:11,389 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:49:11,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:49:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:11,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:11,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:11,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:49:11,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:49:11,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:49:11,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:11,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:49:11,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:49:11,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:49:11,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:11,424 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 23:49:11,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969966735] [2020-10-27 23:49:11,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:49:11,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:49:11,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053523202] [2020-10-27 23:49:11,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:49:11,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:49:11,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:49:11,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:49:11,427 INFO L87 Difference]: Start difference. First operand 8030 states and 11592 transitions. Second operand 4 states. [2020-10-27 23:49:11,632 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 23:49:13,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:49:13,094 INFO L93 Difference]: Finished difference Result 14893 states and 21659 transitions. [2020-10-27 23:49:13,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:49:13,095 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2020-10-27 23:49:13,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:49:13,144 INFO L225 Difference]: With dead ends: 14893 [2020-10-27 23:49:13,145 INFO L226 Difference]: Without dead ends: 11050 [2020-10-27 23:49:13,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:49:13,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11050 states. [2020-10-27 23:49:13,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11050 to 9710. [2020-10-27 23:49:13,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9710 states. [2020-10-27 23:49:13,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9710 states to 9710 states and 14040 transitions. [2020-10-27 23:49:13,779 INFO L78 Accepts]: Start accepts. Automaton has 9710 states and 14040 transitions. Word has length 92 [2020-10-27 23:49:13,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:49:13,780 INFO L481 AbstractCegarLoop]: Abstraction has 9710 states and 14040 transitions. [2020-10-27 23:49:13,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:49:13,780 INFO L276 IsEmpty]: Start isEmpty. Operand 9710 states and 14040 transitions. [2020-10-27 23:49:13,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 23:49:13,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:49:13,800 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] [2020-10-27 23:49:13,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:49:13,801 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:49:13,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:49:13,801 INFO L82 PathProgramCache]: Analyzing trace with hash -843809715, now seen corresponding path program 1 times [2020-10-27 23:49:13,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:49:13,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280069224] [2020-10-27 23:49:13,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:49:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:13,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:13,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:13,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:13,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:13,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:14,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:14,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:15,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:17,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:18,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:18,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 23:49:18,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:49:18,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 23:49:18,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:18,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:49:18,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 23:49:18,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 23:49:18,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:19,044 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:49:19,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:49:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:19,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:19,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:19,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:49:19,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:49:19,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:49:19,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:19,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:49:19,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:49:19,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:49:19,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:19,082 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 23:49:19,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280069224] [2020-10-27 23:49:19,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:49:19,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:49:19,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988379845] [2020-10-27 23:49:19,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:49:19,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:49:19,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:49:19,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:49:19,085 INFO L87 Difference]: Start difference. First operand 9710 states and 14040 transitions. Second operand 4 states. [2020-10-27 23:49:20,562 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 23:49:20,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:49:20,890 INFO L93 Difference]: Finished difference Result 17542 states and 25400 transitions. [2020-10-27 23:49:20,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:49:20,891 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2020-10-27 23:49:20,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:49:20,916 INFO L225 Difference]: With dead ends: 17542 [2020-10-27 23:49:20,917 INFO L226 Difference]: Without dead ends: 11448 [2020-10-27 23:49:20,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:49:20,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11448 states. [2020-10-27 23:49:21,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11448 to 11445. [2020-10-27 23:49:21,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11445 states. [2020-10-27 23:49:21,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11445 states to 11445 states and 16462 transitions. [2020-10-27 23:49:21,542 INFO L78 Accepts]: Start accepts. Automaton has 11445 states and 16462 transitions. Word has length 94 [2020-10-27 23:49:21,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:49:21,542 INFO L481 AbstractCegarLoop]: Abstraction has 11445 states and 16462 transitions. [2020-10-27 23:49:21,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:49:21,542 INFO L276 IsEmpty]: Start isEmpty. Operand 11445 states and 16462 transitions. [2020-10-27 23:49:21,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-27 23:49:21,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:49:21,565 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] [2020-10-27 23:49:21,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:49:21,566 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:49:21,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:49:21,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1988619923, now seen corresponding path program 1 times [2020-10-27 23:49:21,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:49:21,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475556386] [2020-10-27 23:49:21,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:49:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:21,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:21,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:21,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:21,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:21,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:21,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:22,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:23,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:26,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:26,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 23:49:26,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:49:26,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 23:49:26,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:26,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:49:26,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-27 23:49:26,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 23:49:26,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:26,820 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:49:26,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:49:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:26,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:26,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:26,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:49:26,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:49:26,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:49:26,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:26,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:49:26,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:49:26,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:49:26,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:26,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:49:26,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475556386] [2020-10-27 23:49:26,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:49:26,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:49:26,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055650064] [2020-10-27 23:49:26,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:49:26,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:49:26,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:49:26,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:49:26,849 INFO L87 Difference]: Start difference. First operand 11445 states and 16462 transitions. Second operand 5 states. [2020-10-27 23:49:28,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:49:28,210 INFO L93 Difference]: Finished difference Result 20034 states and 28873 transitions. [2020-10-27 23:49:28,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:49:28,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-27 23:49:28,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:49:28,233 INFO L225 Difference]: With dead ends: 20034 [2020-10-27 23:49:28,233 INFO L226 Difference]: Without dead ends: 9786 [2020-10-27 23:49:28,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:49:28,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9786 states. [2020-10-27 23:49:28,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9786 to 9786. [2020-10-27 23:49:28,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9786 states. [2020-10-27 23:49:28,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9786 states to 9786 states and 14097 transitions. [2020-10-27 23:49:28,856 INFO L78 Accepts]: Start accepts. Automaton has 9786 states and 14097 transitions. Word has length 96 [2020-10-27 23:49:28,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:49:28,857 INFO L481 AbstractCegarLoop]: Abstraction has 9786 states and 14097 transitions. [2020-10-27 23:49:28,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:49:28,857 INFO L276 IsEmpty]: Start isEmpty. Operand 9786 states and 14097 transitions. [2020-10-27 23:49:28,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 23:49:28,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:49:28,872 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] [2020-10-27 23:49:28,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 23:49:28,872 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:49:28,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:49:28,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1977997062, now seen corresponding path program 1 times [2020-10-27 23:49:28,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:49:28,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600334646] [2020-10-27 23:49:28,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:49:28,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:28,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:28,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:28,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:29,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:29,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:29,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:29,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:30,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:32,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:33,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:33,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 23:49:33,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:49:33,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 23:49:33,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:33,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 23:49:33,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 23:49:33,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 23:49:33,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:34,356 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:49:34,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:49:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:34,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:34,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:34,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:49:34,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:49:34,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:49:34,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:34,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:49:34,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:49:34,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:49:34,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:34,394 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 23:49:34,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600334646] [2020-10-27 23:49:34,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:49:34,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:49:34,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713254095] [2020-10-27 23:49:34,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:49:34,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:49:34,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:49:34,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:49:34,396 INFO L87 Difference]: Start difference. First operand 9786 states and 14097 transitions. Second operand 11 states. [2020-10-27 23:49:34,716 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:49:39,237 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 23:49:39,442 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-27 23:49:40,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:49:40,686 INFO L93 Difference]: Finished difference Result 24334 states and 34740 transitions. [2020-10-27 23:49:40,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-27 23:49:40,687 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 97 [2020-10-27 23:49:40,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:49:40,732 INFO L225 Difference]: With dead ends: 24334 [2020-10-27 23:49:40,732 INFO L226 Difference]: Without dead ends: 15954 [2020-10-27 23:49:40,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=497, Invalid=1665, Unknown=0, NotChecked=0, Total=2162 [2020-10-27 23:49:40,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15954 states. [2020-10-27 23:49:41,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15954 to 10200. [2020-10-27 23:49:41,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10200 states. [2020-10-27 23:49:41,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10200 states to 10200 states and 14537 transitions. [2020-10-27 23:49:41,647 INFO L78 Accepts]: Start accepts. Automaton has 10200 states and 14537 transitions. Word has length 97 [2020-10-27 23:49:41,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:49:41,647 INFO L481 AbstractCegarLoop]: Abstraction has 10200 states and 14537 transitions. [2020-10-27 23:49:41,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:49:41,648 INFO L276 IsEmpty]: Start isEmpty. Operand 10200 states and 14537 transitions. [2020-10-27 23:49:41,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 23:49:41,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:49:41,659 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] [2020-10-27 23:49:41,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 23:49:41,659 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:49:41,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:49:41,660 INFO L82 PathProgramCache]: Analyzing trace with hash 594310644, now seen corresponding path program 1 times [2020-10-27 23:49:41,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:49:41,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092897659] [2020-10-27 23:49:41,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:49:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:41,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:41,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:41,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:42,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:42,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:42,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:42,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:42,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:42,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:46,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:46,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 23:49:46,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:49:46,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 23:49:46,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:46,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 23:49:46,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 23:49:46,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 23:49:46,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:47,135 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:49:47,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:49:47,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:47,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:47,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:47,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:49:47,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:49:47,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:49:47,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:47,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:49:47,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:49:47,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:49:47,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:47,189 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 23:49:47,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092897659] [2020-10-27 23:49:47,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:49:47,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:49:47,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834062131] [2020-10-27 23:49:47,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:49:47,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:49:47,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:49:47,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:49:47,193 INFO L87 Difference]: Start difference. First operand 10200 states and 14537 transitions. Second operand 11 states. [2020-10-27 23:49:47,483 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 23:49:51,169 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 23:49:51,374 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-27 23:49:52,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:49:52,360 INFO L93 Difference]: Finished difference Result 29459 states and 41768 transitions. [2020-10-27 23:49:52,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 23:49:52,360 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 97 [2020-10-27 23:49:52,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:49:52,400 INFO L225 Difference]: With dead ends: 29459 [2020-10-27 23:49:52,400 INFO L226 Difference]: Without dead ends: 20099 [2020-10-27 23:49:52,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=343, Invalid=1379, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 23:49:52,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20099 states. [2020-10-27 23:49:53,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20099 to 10747. [2020-10-27 23:49:53,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10747 states. [2020-10-27 23:49:53,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10747 states to 10747 states and 15128 transitions. [2020-10-27 23:49:53,340 INFO L78 Accepts]: Start accepts. Automaton has 10747 states and 15128 transitions. Word has length 97 [2020-10-27 23:49:53,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:49:53,340 INFO L481 AbstractCegarLoop]: Abstraction has 10747 states and 15128 transitions. [2020-10-27 23:49:53,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:49:53,340 INFO L276 IsEmpty]: Start isEmpty. Operand 10747 states and 15128 transitions. [2020-10-27 23:49:53,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 23:49:53,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:49:53,351 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] [2020-10-27 23:49:53,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 23:49:53,352 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:49:53,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:49:53,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1330412526, now seen corresponding path program 1 times [2020-10-27 23:49:53,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:49:53,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321961157] [2020-10-27 23:49:53,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:49:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:53,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:53,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:54,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:54,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 23:49:54,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 23:49:54,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 769 [2020-10-27 23:49:54,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:54,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:49:54,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 23:49:54,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 23:49:54,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:54,373 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:49:54,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:49:54,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:54,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:54,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:49:54,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:49:54,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:49:54,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:49:54,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:49:54,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:49:54,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:49:54,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:49:54,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:49:54,406 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 23:49:54,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321961157] [2020-10-27 23:49:54,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:49:54,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:49:54,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633573314] [2020-10-27 23:49:54,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:49:54,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:49:54,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:49:54,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:49:54,408 INFO L87 Difference]: Start difference. First operand 10747 states and 15128 transitions. Second operand 5 states. [2020-10-27 23:49:55,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:49:55,856 INFO L93 Difference]: Finished difference Result 21457 states and 30188 transitions. [2020-10-27 23:49:55,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:49:55,857 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-27 23:49:55,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:49:55,884 INFO L225 Difference]: With dead ends: 21457 [2020-10-27 23:49:55,884 INFO L226 Difference]: Without dead ends: 10747 [2020-10-27 23:49:55,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:49:55,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10747 states. [2020-10-27 23:49:56,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10747 to 10747. [2020-10-27 23:49:56,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10747 states. [2020-10-27 23:49:56,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10747 states to 10747 states and 15097 transitions. [2020-10-27 23:49:56,827 INFO L78 Accepts]: Start accepts. Automaton has 10747 states and 15097 transitions. Word has length 97 [2020-10-27 23:49:56,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:49:56,827 INFO L481 AbstractCegarLoop]: Abstraction has 10747 states and 15097 transitions. [2020-10-27 23:49:56,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:49:56,827 INFO L276 IsEmpty]: Start isEmpty. Operand 10747 states and 15097 transitions. [2020-10-27 23:49:56,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 23:49:56,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:49:56,839 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] [2020-10-27 23:49:56,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 23:49:56,839 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:49:56,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:49:56,840 INFO L82 PathProgramCache]: Analyzing trace with hash -108109453, now seen corresponding path program 1 times [2020-10-27 23:49:56,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:49:56,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896211370] [2020-10-27 23:49:56,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:49:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:49:56,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:56,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:56,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:56,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:56,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:56,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:57,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:57,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:58,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:58,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:49:58,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:01,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:01,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 23:50:01,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:50:01,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 23:50:01,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:01,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:50:01,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-27 23:50:01,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 23:50:01,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:02,083 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:50:02,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:50:02,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:02,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:02,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:02,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:50:02,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:50:02,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:50:02,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:02,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:50:02,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:50:02,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:50:02,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:02,119 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 23:50:02,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896211370] [2020-10-27 23:50:02,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:50:02,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:50:02,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748801938] [2020-10-27 23:50:02,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:50:02,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:50:02,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:50:02,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:50:02,121 INFO L87 Difference]: Start difference. First operand 10747 states and 15097 transitions. Second operand 4 states. [2020-10-27 23:50:02,356 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-27 23:50:03,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:50:03,606 INFO L93 Difference]: Finished difference Result 18393 states and 25860 transitions. [2020-10-27 23:50:03,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:50:03,606 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-10-27 23:50:03,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:50:03,619 INFO L225 Difference]: With dead ends: 18393 [2020-10-27 23:50:03,619 INFO L226 Difference]: Without dead ends: 9573 [2020-10-27 23:50:03,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:50:03,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9573 states. [2020-10-27 23:50:04,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9573 to 9570. [2020-10-27 23:50:04,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9570 states. [2020-10-27 23:50:04,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9570 states to 9570 states and 13438 transitions. [2020-10-27 23:50:04,339 INFO L78 Accepts]: Start accepts. Automaton has 9570 states and 13438 transitions. Word has length 127 [2020-10-27 23:50:04,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:50:04,339 INFO L481 AbstractCegarLoop]: Abstraction has 9570 states and 13438 transitions. [2020-10-27 23:50:04,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:50:04,339 INFO L276 IsEmpty]: Start isEmpty. Operand 9570 states and 13438 transitions. [2020-10-27 23:50:04,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-27 23:50:04,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:50:04,347 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] [2020-10-27 23:50:04,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 23:50:04,348 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:50:04,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:50:04,348 INFO L82 PathProgramCache]: Analyzing trace with hash -555393759, now seen corresponding path program 1 times [2020-10-27 23:50:04,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:50:04,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572381929] [2020-10-27 23:50:04,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:50:04,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:04,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:04,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:04,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:04,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:04,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:04,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:04,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:04,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:04,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:04,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:09,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:09,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 23:50:09,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:50:09,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 23:50:09,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:09,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:50:09,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 23:50:09,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 23:50:09,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:09,580 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:50:09,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:50:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:09,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:09,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:09,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:50:09,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:50:09,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:50:09,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:09,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:50:09,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:50:09,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:50:09,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:09,611 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 23:50:09,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572381929] [2020-10-27 23:50:09,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:50:09,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:50:09,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199543745] [2020-10-27 23:50:09,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:50:09,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:50:09,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:50:09,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:50:09,613 INFO L87 Difference]: Start difference. First operand 9570 states and 13438 transitions. Second operand 4 states. [2020-10-27 23:50:09,840 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-27 23:50:11,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:50:11,178 INFO L93 Difference]: Finished difference Result 17667 states and 24879 transitions. [2020-10-27 23:50:11,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:50:11,182 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-10-27 23:50:11,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:50:11,195 INFO L225 Difference]: With dead ends: 17667 [2020-10-27 23:50:11,196 INFO L226 Difference]: Without dead ends: 9262 [2020-10-27 23:50:11,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:50:11,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9262 states. [2020-10-27 23:50:11,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9262 to 9055. [2020-10-27 23:50:11,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9055 states. [2020-10-27 23:50:11,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9055 states to 9055 states and 12734 transitions. [2020-10-27 23:50:11,919 INFO L78 Accepts]: Start accepts. Automaton has 9055 states and 12734 transitions. Word has length 128 [2020-10-27 23:50:11,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:50:11,919 INFO L481 AbstractCegarLoop]: Abstraction has 9055 states and 12734 transitions. [2020-10-27 23:50:11,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:50:11,920 INFO L276 IsEmpty]: Start isEmpty. Operand 9055 states and 12734 transitions. [2020-10-27 23:50:11,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-27 23:50:11,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:50:11,926 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] [2020-10-27 23:50:11,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 23:50:11,927 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:50:11,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:50:11,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1408412247, now seen corresponding path program 1 times [2020-10-27 23:50:11,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:50:11,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933767005] [2020-10-27 23:50:11,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:50:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:11,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:11,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:11,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:12,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:12,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:12,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:12,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:12,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:12,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:14,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:14,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:14,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:14,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:16,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:16,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 23:50:16,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:50:16,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 23:50:16,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:16,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:50:16,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-27 23:50:16,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 23:50:16,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:17,189 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:50:17,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:50:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:17,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:17,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:17,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:50:17,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:50:17,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:50:17,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:17,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:50:17,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:50:17,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:50:17,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:50:17,231 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 23:50:17,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933767005] [2020-10-27 23:50:17,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:50:17,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:50:17,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406774642] [2020-10-27 23:50:17,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:50:17,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:50:17,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:50:17,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:50:17,233 INFO L87 Difference]: Start difference. First operand 9055 states and 12734 transitions. Second operand 4 states. [2020-10-27 23:50:18,338 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 23:50:18,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:50:18,827 INFO L93 Difference]: Finished difference Result 15944 states and 22544 transitions. [2020-10-27 23:50:18,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:50:18,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-10-27 23:50:18,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:50:18,837 INFO L225 Difference]: With dead ends: 15944 [2020-10-27 23:50:18,837 INFO L226 Difference]: Without dead ends: 8301 [2020-10-27 23:50:18,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:50:18,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8301 states. [2020-10-27 23:50:19,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8301 to 8298. [2020-10-27 23:50:19,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8298 states. [2020-10-27 23:50:19,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8298 states to 8298 states and 11646 transitions. [2020-10-27 23:50:19,417 INFO L78 Accepts]: Start accepts. Automaton has 8298 states and 11646 transitions. Word has length 129 [2020-10-27 23:50:19,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:50:19,417 INFO L481 AbstractCegarLoop]: Abstraction has 8298 states and 11646 transitions. [2020-10-27 23:50:19,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:50:19,417 INFO L276 IsEmpty]: Start isEmpty. Operand 8298 states and 11646 transitions. [2020-10-27 23:50:19,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-27 23:50:19,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:50:19,421 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] [2020-10-27 23:50:19,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 23:50:19,421 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:50:19,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:50:19,422 INFO L82 PathProgramCache]: Analyzing trace with hash -761844325, now seen corresponding path program 1 times [2020-10-27 23:50:19,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:50:19,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607084242] [2020-10-27 23:50:19,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:50:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:19,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:19,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:19,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:19,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:19,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:19,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:19,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:20,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:20,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:21,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:21,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:21,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:22,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:22,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:24,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:24,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 23:50:24,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:50:24,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 23:50:24,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:24,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:50:24,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 23:50:24,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 23:50:24,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:24,646 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:50:24,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:50:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:24,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:24,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:24,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:50:24,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:50:24,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:50:24,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:24,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:50:24,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:50:24,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:50:24,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:24,679 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 23:50:24,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607084242] [2020-10-27 23:50:24,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:50:24,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:50:24,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718077293] [2020-10-27 23:50:24,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:50:24,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:50:24,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:50:24,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:50:24,681 INFO L87 Difference]: Start difference. First operand 8298 states and 11646 transitions. Second operand 4 states. [2020-10-27 23:50:24,921 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-27 23:50:26,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:50:26,254 INFO L93 Difference]: Finished difference Result 15695 states and 22060 transitions. [2020-10-27 23:50:26,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:50:26,254 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-10-27 23:50:26,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:50:26,264 INFO L225 Difference]: With dead ends: 15695 [2020-10-27 23:50:26,264 INFO L226 Difference]: Without dead ends: 8078 [2020-10-27 23:50:26,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:50:26,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8078 states. [2020-10-27 23:50:26,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8078 to 8075. [2020-10-27 23:50:26,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8075 states. [2020-10-27 23:50:26,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8075 states to 8075 states and 11343 transitions. [2020-10-27 23:50:26,875 INFO L78 Accepts]: Start accepts. Automaton has 8075 states and 11343 transitions. Word has length 129 [2020-10-27 23:50:26,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:50:26,876 INFO L481 AbstractCegarLoop]: Abstraction has 8075 states and 11343 transitions. [2020-10-27 23:50:26,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:50:26,876 INFO L276 IsEmpty]: Start isEmpty. Operand 8075 states and 11343 transitions. [2020-10-27 23:50:26,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-27 23:50:26,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:50:26,879 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] [2020-10-27 23:50:26,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 23:50:26,879 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:50:26,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:50:26,880 INFO L82 PathProgramCache]: Analyzing trace with hash -2071672837, now seen corresponding path program 1 times [2020-10-27 23:50:26,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:50:26,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134234070] [2020-10-27 23:50:26,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:50:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:26,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:26,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:26,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:26,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:27,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:27,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:27,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:27,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:27,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:29,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:29,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:29,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:29,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:29,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:31,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:31,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 23:50:31,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:50:31,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 23:50:31,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:31,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:50:31,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-27 23:50:31,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 23:50:31,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:32,125 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:50:32,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:50:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:32,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:32,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:32,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:50:32,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:50:32,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:50:32,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:32,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:50:32,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:50:32,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:50:32,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:32,158 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 23:50:32,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134234070] [2020-10-27 23:50:32,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:50:32,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:50:32,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119623926] [2020-10-27 23:50:32,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:50:32,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:50:32,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:50:32,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:50:32,159 INFO L87 Difference]: Start difference. First operand 8075 states and 11343 transitions. Second operand 6 states. [2020-10-27 23:50:33,452 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-27 23:50:34,040 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 23:50:34,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:50:34,190 INFO L93 Difference]: Finished difference Result 15779 states and 22170 transitions. [2020-10-27 23:50:34,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 23:50:34,191 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2020-10-27 23:50:34,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:50:34,203 INFO L225 Difference]: With dead ends: 15779 [2020-10-27 23:50:34,203 INFO L226 Difference]: Without dead ends: 8877 [2020-10-27 23:50:34,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 23:50:34,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8877 states. [2020-10-27 23:50:34,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8877 to 7786. [2020-10-27 23:50:34,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7786 states. [2020-10-27 23:50:34,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7786 states to 7786 states and 10879 transitions. [2020-10-27 23:50:34,789 INFO L78 Accepts]: Start accepts. Automaton has 7786 states and 10879 transitions. Word has length 130 [2020-10-27 23:50:34,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:50:34,789 INFO L481 AbstractCegarLoop]: Abstraction has 7786 states and 10879 transitions. [2020-10-27 23:50:34,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:50:34,789 INFO L276 IsEmpty]: Start isEmpty. Operand 7786 states and 10879 transitions. [2020-10-27 23:50:34,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-27 23:50:34,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:50:34,792 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] [2020-10-27 23:50:34,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 23:50:34,792 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:50:34,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:50:34,793 INFO L82 PathProgramCache]: Analyzing trace with hash 2075643976, now seen corresponding path program 1 times [2020-10-27 23:50:34,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:50:34,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454572751] [2020-10-27 23:50:34,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:50:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:34,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:34,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:34,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:34,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:34,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:34,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:35,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:35,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:35,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:35,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:36,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:36,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:36,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:39,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:39,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 23:50:39,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:50:39,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 23:50:39,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:39,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:50:39,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 23:50:39,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 23:50:39,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:40,051 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:50:40,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:50:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:40,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:40,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:40,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:50:40,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:50:40,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:50:40,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:40,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:50:40,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:50:40,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:50:40,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:40,093 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 23:50:40,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454572751] [2020-10-27 23:50:40,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:50:40,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:50:40,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296798878] [2020-10-27 23:50:40,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:50:40,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:50:40,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:50:40,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:50:40,095 INFO L87 Difference]: Start difference. First operand 7786 states and 10879 transitions. Second operand 7 states. [2020-10-27 23:50:40,342 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-27 23:50:42,569 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 23:50:42,787 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-27 23:50:42,994 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-27 23:50:43,181 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 23:50:43,374 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-27 23:50:43,569 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 23:50:45,435 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 23:50:46,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:50:46,870 INFO L93 Difference]: Finished difference Result 62632 states and 88093 transitions. [2020-10-27 23:50:46,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:50:46,870 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2020-10-27 23:50:46,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:50:46,933 INFO L225 Difference]: With dead ends: 62632 [2020-10-27 23:50:46,933 INFO L226 Difference]: Without dead ends: 54979 [2020-10-27 23:50:46,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:50:46,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54979 states. [2020-10-27 23:50:48,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54979 to 22116. [2020-10-27 23:50:48,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22116 states. [2020-10-27 23:50:48,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22116 states to 22116 states and 30963 transitions. [2020-10-27 23:50:48,848 INFO L78 Accepts]: Start accepts. Automaton has 22116 states and 30963 transitions. Word has length 130 [2020-10-27 23:50:48,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:50:48,848 INFO L481 AbstractCegarLoop]: Abstraction has 22116 states and 30963 transitions. [2020-10-27 23:50:48,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:50:48,848 INFO L276 IsEmpty]: Start isEmpty. Operand 22116 states and 30963 transitions. [2020-10-27 23:50:48,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-27 23:50:48,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:50:48,857 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] [2020-10-27 23:50:48,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 23:50:48,857 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:50:48,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:50:48,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1141408702, now seen corresponding path program 1 times [2020-10-27 23:50:48,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:50:48,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891985035] [2020-10-27 23:50:48,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:50:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:48,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:48,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:48,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:48,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:49,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:49,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:49,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:49,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:49,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:53,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:53,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 23:50:53,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:50:53,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 23:50:53,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:53,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:50:53,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 23:50:53,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 23:50:53,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:54,098 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:50:54,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:50:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:54,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:54,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:50:54,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:50:54,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:50:54,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:50:54,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:50:54,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:50:54,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:50:54,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:50:54,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:50:54,131 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 23:50:54,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891985035] [2020-10-27 23:50:54,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:50:54,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:50:54,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334172071] [2020-10-27 23:50:54,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:50:54,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:50:54,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:50:54,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:50:54,133 INFO L87 Difference]: Start difference. First operand 22116 states and 30963 transitions. Second operand 4 states. [2020-10-27 23:50:54,353 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-27 23:50:56,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:50:56,783 INFO L93 Difference]: Finished difference Result 42768 states and 59957 transitions. [2020-10-27 23:50:56,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:50:56,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-10-27 23:50:56,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:50:56,806 INFO L225 Difference]: With dead ends: 42768 [2020-10-27 23:50:56,806 INFO L226 Difference]: Without dead ends: 21945 [2020-10-27 23:50:56,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:50:56,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21945 states. [2020-10-27 23:50:58,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21945 to 21942. [2020-10-27 23:50:58,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21942 states. [2020-10-27 23:50:58,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21942 states to 21942 states and 30741 transitions. [2020-10-27 23:50:58,581 INFO L78 Accepts]: Start accepts. Automaton has 21942 states and 30741 transitions. Word has length 130 [2020-10-27 23:50:58,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:50:58,581 INFO L481 AbstractCegarLoop]: Abstraction has 21942 states and 30741 transitions. [2020-10-27 23:50:58,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:50:58,581 INFO L276 IsEmpty]: Start isEmpty. Operand 21942 states and 30741 transitions. [2020-10-27 23:50:58,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-27 23:50:58,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:50:58,589 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] [2020-10-27 23:50:58,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 23:50:58,589 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:50:58,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:50:58,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1598840206, now seen corresponding path program 1 times [2020-10-27 23:50:58,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:50:58,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800028580] [2020-10-27 23:50:58,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:50:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:50:58,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:58,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:58,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:58,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:58,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:58,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:58,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:59,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:59,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:50:59,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:00,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:01,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:03,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:51:03,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 23:51:03,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:51:03,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 23:51:03,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:51:03,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:51:03,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-27 23:51:03,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 23:51:03,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:51:03,837 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:51:03,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:51:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:51:03,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:03,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:51:03,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:51:03,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:51:03,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:51:03,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:51:03,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:51:03,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:51:03,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:51:03,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:51:03,873 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 23:51:03,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800028580] [2020-10-27 23:51:03,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:51:03,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:51:03,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493136063] [2020-10-27 23:51:03,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:51:03,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:51:03,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:51:03,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:51:03,875 INFO L87 Difference]: Start difference. First operand 21942 states and 30741 transitions. Second operand 4 states. [2020-10-27 23:51:04,959 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 23:51:05,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:51:05,626 INFO L93 Difference]: Finished difference Result 31578 states and 44314 transitions. [2020-10-27 23:51:05,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:51:05,628 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-10-27 23:51:05,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:51:05,642 INFO L225 Difference]: With dead ends: 31578 [2020-10-27 23:51:05,642 INFO L226 Difference]: Without dead ends: 10929 [2020-10-27 23:51:05,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:51:05,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10929 states. [2020-10-27 23:51:06,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10929 to 10926. [2020-10-27 23:51:06,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10926 states. [2020-10-27 23:51:06,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10926 states to 10926 states and 15192 transitions. [2020-10-27 23:51:06,622 INFO L78 Accepts]: Start accepts. Automaton has 10926 states and 15192 transitions. Word has length 131 [2020-10-27 23:51:06,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:51:06,623 INFO L481 AbstractCegarLoop]: Abstraction has 10926 states and 15192 transitions. [2020-10-27 23:51:06,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:51:06,623 INFO L276 IsEmpty]: Start isEmpty. Operand 10926 states and 15192 transitions. [2020-10-27 23:51:06,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-27 23:51:06,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:51:06,627 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] [2020-10-27 23:51:06,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 23:51:06,628 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:51:06,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:51:06,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1479619507, now seen corresponding path program 1 times [2020-10-27 23:51:06,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:51:06,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452405801] [2020-10-27 23:51:06,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:51:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:51:06,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:06,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:06,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:06,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:06,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:06,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:06,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:07,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:07,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:09,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:09,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:09,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:10,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:11,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:51:11,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 23:51:11,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:51:11,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 23:51:11,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:51:11,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:51:11,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 23:51:11,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 23:51:11,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:51:11,890 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:51:11,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:51:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:51:11,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:11,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:51:11,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:51:11,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:51:11,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:51:11,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:51:11,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:51:11,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:51:11,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:51:11,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:51:11,931 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 23:51:11,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452405801] [2020-10-27 23:51:11,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:51:11,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:51:11,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353377430] [2020-10-27 23:51:11,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:51:11,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:51:11,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:51:11,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:51:11,933 INFO L87 Difference]: Start difference. First operand 10926 states and 15192 transitions. Second operand 4 states. [2020-10-27 23:51:12,151 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 23:51:14,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:51:14,565 INFO L93 Difference]: Finished difference Result 31320 states and 43552 transitions. [2020-10-27 23:51:14,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:51:14,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-10-27 23:51:14,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:51:14,588 INFO L225 Difference]: With dead ends: 31320 [2020-10-27 23:51:14,588 INFO L226 Difference]: Without dead ends: 21687 [2020-10-27 23:51:14,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:51:14,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21687 states. [2020-10-27 23:51:16,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21687 to 21684. [2020-10-27 23:51:16,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21684 states. [2020-10-27 23:51:16,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21684 states to 21684 states and 29991 transitions. [2020-10-27 23:51:16,398 INFO L78 Accepts]: Start accepts. Automaton has 21684 states and 29991 transitions. Word has length 131 [2020-10-27 23:51:16,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:51:16,398 INFO L481 AbstractCegarLoop]: Abstraction has 21684 states and 29991 transitions. [2020-10-27 23:51:16,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:51:16,399 INFO L276 IsEmpty]: Start isEmpty. Operand 21684 states and 29991 transitions. [2020-10-27 23:51:16,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-27 23:51:16,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:51:16,407 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:51:16,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 23:51:16,407 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:51:16,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:51:16,407 INFO L82 PathProgramCache]: Analyzing trace with hash 716755800, now seen corresponding path program 1 times [2020-10-27 23:51:16,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:51:16,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029553230] [2020-10-27 23:51:16,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:51:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:51:16,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:16,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:16,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:16,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:16,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:16,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:17,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:17,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:18,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:18,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:21,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:51:21,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 23:51:21,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:51:21,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 23:51:21,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:51:21,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:51:21,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 23:51:21,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 23:51:21,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:51:21,655 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:51:21,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:51:21,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:51:21,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:21,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:51:21,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:51:21,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:51:21,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:51:21,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:51:21,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:51:21,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:51:21,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:51:21,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:51:21,686 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 23:51:21,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029553230] [2020-10-27 23:51:21,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:51:21,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:51:21,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498581572] [2020-10-27 23:51:21,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:51:21,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:51:21,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:51:21,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:51:21,689 INFO L87 Difference]: Start difference. First operand 21684 states and 29991 transitions. Second operand 4 states. [2020-10-27 23:51:21,927 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-27 23:51:24,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:51:24,668 INFO L93 Difference]: Finished difference Result 42126 states and 58337 transitions. [2020-10-27 23:51:24,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:51:24,669 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-10-27 23:51:24,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:51:24,690 INFO L225 Difference]: With dead ends: 42126 [2020-10-27 23:51:24,691 INFO L226 Difference]: Without dead ends: 21557 [2020-10-27 23:51:24,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:51:24,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21557 states. [2020-10-27 23:51:26,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21557 to 21554. [2020-10-27 23:51:26,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21554 states. [2020-10-27 23:51:26,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21554 states to 21554 states and 29839 transitions. [2020-10-27 23:51:26,598 INFO L78 Accepts]: Start accepts. Automaton has 21554 states and 29839 transitions. Word has length 131 [2020-10-27 23:51:26,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:51:26,598 INFO L481 AbstractCegarLoop]: Abstraction has 21554 states and 29839 transitions. [2020-10-27 23:51:26,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:51:26,598 INFO L276 IsEmpty]: Start isEmpty. Operand 21554 states and 29839 transitions. [2020-10-27 23:51:26,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-27 23:51:26,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:51:26,606 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] [2020-10-27 23:51:26,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 23:51:26,606 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:51:26,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:51:26,607 INFO L82 PathProgramCache]: Analyzing trace with hash 730757524, now seen corresponding path program 1 times [2020-10-27 23:51:26,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:51:26,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437643523] [2020-10-27 23:51:26,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:51:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:51:26,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:26,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:26,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:26,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:26,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:26,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:26,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:27,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:27,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:27,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:28,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:28,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:28,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:28,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:29,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:31,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:51:31,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-27 23:51:31,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 23:51:31,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 23:51:31,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:51:31,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:51:31,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-27 23:51:31,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 23:51:31,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:51:31,867 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:51:31,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:51:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:51:31,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:31,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:51:31,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:51:31,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:51:31,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:51:31,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:51:31,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:51:31,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:51:31,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:51:31,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:51:31,904 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 23:51:31,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437643523] [2020-10-27 23:51:31,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:51:31,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:51:31,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024629146] [2020-10-27 23:51:31,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:51:31,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:51:31,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:51:31,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:51:31,906 INFO L87 Difference]: Start difference. First operand 21554 states and 29839 transitions. Second operand 4 states. [2020-10-27 23:51:32,125 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 23:51:34,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:51:34,621 INFO L93 Difference]: Finished difference Result 40760 states and 56465 transitions. [2020-10-27 23:51:34,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:51:34,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-10-27 23:51:34,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:51:34,649 INFO L225 Difference]: With dead ends: 40760 [2020-10-27 23:51:34,650 INFO L226 Difference]: Without dead ends: 21605 [2020-10-27 23:51:34,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:51:34,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21605 states. [2020-10-27 23:51:36,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21605 to 21554. [2020-10-27 23:51:36,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21554 states. [2020-10-27 23:51:36,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21554 states to 21554 states and 29743 transitions. [2020-10-27 23:51:36,534 INFO L78 Accepts]: Start accepts. Automaton has 21554 states and 29743 transitions. Word has length 132 [2020-10-27 23:51:36,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:51:36,535 INFO L481 AbstractCegarLoop]: Abstraction has 21554 states and 29743 transitions. [2020-10-27 23:51:36,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:51:36,535 INFO L276 IsEmpty]: Start isEmpty. Operand 21554 states and 29743 transitions. [2020-10-27 23:51:36,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-27 23:51:36,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:51:36,543 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] [2020-10-27 23:51:36,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 23:51:36,543 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:51:36,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:51:36,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1745591773, now seen corresponding path program 1 times [2020-10-27 23:51:36,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:51:36,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41718874] [2020-10-27 23:51:36,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:51:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:51:36,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:36,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:36,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:36,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:36,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:36,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:37,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:37,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:37,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:38,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:38,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:39,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:51:39,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking...