/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:55:05,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:55:05,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:55:05,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:55:05,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:55:05,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:55:05,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:55:05,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:55:05,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:55:05,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:55:05,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:55:05,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:55:05,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:55:05,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:55:05,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:55:05,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:55:05,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:55:05,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:55:05,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:55:05,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:55:05,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:55:05,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:55:05,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:55:05,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:55:05,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:55:05,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:55:05,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:55:05,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:55:05,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:55:05,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:55:05,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:55:05,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:55:05,760 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:55:05,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:55:05,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:55:05,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:55:05,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:55:05,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:55:05,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:55:05,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:55:05,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:55:05,767 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 [2020-10-28 17:55:05,803 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:55:05,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:55:05,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:55:05,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:55:05,806 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:55:05,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:55:05,807 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:55:05,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:55:05,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:55:05,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:55:05,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:55:05,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:55:05,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:55:05,811 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:55:05,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:55:05,811 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:55:05,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:55:05,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:55:05,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:55:05,812 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:55:05,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:55:05,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:55:05,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:55:05,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:55:05,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:55:05,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:55:05,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:55:05,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:55:05,814 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:55:05,815 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:55:06,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:55:06,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:55:06,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:55:06,279 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:55:06,280 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:55:06,281 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c [2020-10-28 17:55:06,369 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd53133ae/4c2990bf2fd24776b714e3f9769d2d9d/FLAG4cc5c6924 [2020-10-28 17:55:07,093 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:55:07,094 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c [2020-10-28 17:55:07,118 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd53133ae/4c2990bf2fd24776b714e3f9769d2d9d/FLAG4cc5c6924 [2020-10-28 17:55:07,396 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd53133ae/4c2990bf2fd24776b714e3f9769d2d9d [2020-10-28 17:55:07,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:55:07,410 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:55:07,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:55:07,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:55:07,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:55:07,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:55:07" (1/1) ... [2020-10-28 17:55:07,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62a11ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:07, skipping insertion in model container [2020-10-28 17:55:07,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:55:07" (1/1) ... [2020-10-28 17:55:07,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:55:07,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:55:07,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:55:07,872 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:55:08,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:55:08,029 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:55:08,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:08 WrapperNode [2020-10-28 17:55:08,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:55:08,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:55:08,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:55:08,031 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:55:08,043 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:08" (1/1) ... [2020-10-28 17:55:08,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:08" (1/1) ... [2020-10-28 17:55:08,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:08" (1/1) ... [2020-10-28 17:55:08,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:08" (1/1) ... [2020-10-28 17:55:08,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:08" (1/1) ... [2020-10-28 17:55:08,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:08" (1/1) ... [2020-10-28 17:55:08,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:08" (1/1) ... [2020-10-28 17:55:08,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:55:08,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:55:08,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:55:08,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:55:08,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:08" (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 [2020-10-28 17:55:08,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:55:08,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:55:08,202 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:55:08,202 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 17:55:08,202 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-28 17:55:08,202 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-28 17:55:08,203 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-28 17:55:08,203 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-28 17:55:08,203 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-28 17:55:08,203 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:55:08,203 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-28 17:55:08,203 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:55:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:55:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:55:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:55:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 17:55:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 17:55:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 17:55:08,204 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 17:55:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 17:55:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 17:55:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 17:55:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 17:55:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 17:55:08,205 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 17:55:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 17:55:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:55:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:55:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:55:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:55:08,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:55:08,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:55:08,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:55:09,327 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:55:09,327 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 17:55:09,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:55:09 BoogieIcfgContainer [2020-10-28 17:55:09,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:55:09,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:55:09,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:55:09,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:55:09,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:55:07" (1/3) ... [2020-10-28 17:55:09,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417c237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:55:09, skipping insertion in model container [2020-10-28 17:55:09,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:08" (2/3) ... [2020-10-28 17:55:09,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417c237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:55:09, skipping insertion in model container [2020-10-28 17:55:09,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:55:09" (3/3) ... [2020-10-28 17:55:09,338 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c [2020-10-28 17:55:09,350 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:55:09,355 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:55:09,369 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:55:09,396 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:55:09,396 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:55:09,396 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:55:09,397 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:55:09,397 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:55:09,397 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:55:09,397 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:55:09,397 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:55:09,420 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-10-28 17:55:09,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-28 17:55:09,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:55:09,433 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] [2020-10-28 17:55:09,433 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:55:09,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:55:09,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1937700257, now seen corresponding path program 1 times [2020-10-28 17:55:09,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:55:09,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439603971] [2020-10-28 17:55:09,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:55:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:09,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:10,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:10,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 17:55:10,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:10,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-10-28 17:55:10,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:10,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:10,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:10,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:55:10,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:10,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:55:10,556 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:55:10,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:55:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:10,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:10,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:10,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:55:10,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:10,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:55:10,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:10,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:10,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:10,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:10,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:10,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:55:10,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:55:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:10,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:10,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:10,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:55:10,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:10,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 17:55:10,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:10,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:10,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:10,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:10,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:10,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:55:10,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 17:55:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:10,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:10,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:10,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:55:10,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:10,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:55:10,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:10,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:10,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:10,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:55:10,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:10,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:55:10,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:55:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:10,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:10,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:10,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:10,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:10,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:55:10,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:10,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:10,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:10,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:55:10,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:10,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:10,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:55:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:10,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:10,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:10,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:10,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:10,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:55:10,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:10,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:10,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:10,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:55:10,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:10,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:55:10,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:55:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:10,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:10,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:10,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:10,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:10,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:55:10,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:10,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:10,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:10,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:55:10,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:10,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:10,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:55:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:10,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:10,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:10,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:55:10,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:10,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:55:10,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:10,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:10,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:10,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:55:10,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:10,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:10,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:55:10,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439603971] [2020-10-28 17:55:10,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:55:10,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 17:55:10,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95651313] [2020-10-28 17:55:10,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:55:10,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:55:10,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:55:10,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:55:10,848 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 6 states. [2020-10-28 17:55:12,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:55:12,261 INFO L93 Difference]: Finished difference Result 299 states and 471 transitions. [2020-10-28 17:55:12,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:55:12,263 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-28 17:55:12,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:55:12,275 INFO L225 Difference]: With dead ends: 299 [2020-10-28 17:55:12,275 INFO L226 Difference]: Without dead ends: 185 [2020-10-28 17:55:12,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:55:12,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-28 17:55:12,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 170. [2020-10-28 17:55:12,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-28 17:55:12,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 272 transitions. [2020-10-28 17:55:12,346 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 272 transitions. Word has length 66 [2020-10-28 17:55:12,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:55:12,347 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 272 transitions. [2020-10-28 17:55:12,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:55:12,347 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 272 transitions. [2020-10-28 17:55:12,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-28 17:55:12,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:55:12,351 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] [2020-10-28 17:55:12,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:55:12,352 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:55:12,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:55:12,352 INFO L82 PathProgramCache]: Analyzing trace with hash 92333091, now seen corresponding path program 1 times [2020-10-28 17:55:12,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:55:12,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277376783] [2020-10-28 17:55:12,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:55:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:12,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:13,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:13,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 17:55:13,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:13,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 902 [2020-10-28 17:55:13,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:13,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:13,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:55:13,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 17:55:13,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:55:13,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:55:13,684 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:55:13,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:55:13,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:13,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:13,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:13,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:55:13,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:13,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:55:13,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:13,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:13,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:13,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:13,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:13,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:13,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:55:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:13,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:13,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:13,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:55:13,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:13,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 17:55:13,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:13,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:13,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:55:13,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:13,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:55:13,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:13,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 17:55:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:13,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:13,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:13,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:55:13,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:13,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:55:13,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:13,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:13,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:55:13,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:55:13,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:55:13,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:13,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:55:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:13,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:13,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:13,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:13,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:13,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:55:13,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:13,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:13,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:13,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:55:13,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:13,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 17:55:14,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:55:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:14,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:14,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:14,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:14,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:14,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:55:14,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:14,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:14,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:14,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:55:14,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:14,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:14,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:55:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:14,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:14,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:14,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:14,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:14,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:55:14,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:14,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:14,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:14,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:55:14,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:14,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:14,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:55:14,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:14,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:14,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:14,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:55:14,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:14,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:55:14,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:14,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:14,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:14,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:55:14,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:14,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:14,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:55:14,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277376783] [2020-10-28 17:55:14,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:55:14,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 17:55:14,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421215106] [2020-10-28 17:55:14,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:55:14,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:55:14,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:55:14,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:55:14,177 INFO L87 Difference]: Start difference. First operand 170 states and 272 transitions. Second operand 12 states. [2020-10-28 17:55:14,818 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 17:55:15,154 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-28 17:55:15,580 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:55:15,943 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:55:17,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:55:17,861 INFO L93 Difference]: Finished difference Result 298 states and 469 transitions. [2020-10-28 17:55:17,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:55:17,862 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2020-10-28 17:55:17,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:55:17,868 INFO L225 Difference]: With dead ends: 298 [2020-10-28 17:55:17,869 INFO L226 Difference]: Without dead ends: 194 [2020-10-28 17:55:17,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:55:17,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-28 17:55:17,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 170. [2020-10-28 17:55:17,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-28 17:55:17,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 242 transitions. [2020-10-28 17:55:17,927 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 242 transitions. Word has length 66 [2020-10-28 17:55:17,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:55:17,927 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 242 transitions. [2020-10-28 17:55:17,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:55:17,928 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 242 transitions. [2020-10-28 17:55:17,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-28 17:55:17,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:55:17,936 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] [2020-10-28 17:55:17,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:55:17,937 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:55:17,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:55:17,937 INFO L82 PathProgramCache]: Analyzing trace with hash -2007534636, now seen corresponding path program 1 times [2020-10-28 17:55:17,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:55:17,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762180412] [2020-10-28 17:55:17,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:55:17,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:18,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:18,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:18,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:20,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:23,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:23,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 17:55:23,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:55:23,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 17:55:23,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:23,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:23,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:55:23,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 17:55:23,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 17:55:23,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:55:23,322 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:55:23,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:55:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:23,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:23,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:23,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:55:23,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:23,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:55:23,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:23,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:23,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:23,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:23,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:23,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:23,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:55:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:23,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:23,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:23,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:55:23,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:23,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 17:55:23,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:23,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:23,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:55:23,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:23,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 17:55:23,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:23,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:55:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:23,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:23,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:23,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:55:23,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:23,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:55:23,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:23,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:23,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:55:23,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:23,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:55:23,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:23,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:55:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:23,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:23,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:23,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:23,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:23,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:55:23,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:23,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:23,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:55:23,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:23,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:55:23,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:23,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:55:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:23,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:23,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:23,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:23,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:23,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:55:23,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:23,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:23,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:55:23,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:23,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:55:23,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:23,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 17:55:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:23,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:23,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:23,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:23,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:23,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:55:23,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:23,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:23,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:55:23,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:55:23,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:55:23,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:23,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 17:55:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:23,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:23,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:23,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:55:23,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:23,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:55:23,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:23,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:23,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:23,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:55:23,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:23,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:23,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:55:23,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [762180412] [2020-10-28 17:55:23,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:55:23,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:55:23,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434467713] [2020-10-28 17:55:23,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:55:23,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:55:23,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:55:23,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:55:23,639 INFO L87 Difference]: Start difference. First operand 170 states and 242 transitions. Second operand 9 states. [2020-10-28 17:55:23,970 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 17:55:26,340 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 17:55:26,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:55:26,580 INFO L93 Difference]: Finished difference Result 393 states and 587 transitions. [2020-10-28 17:55:26,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:55:26,581 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-10-28 17:55:26,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:55:26,587 INFO L225 Difference]: With dead ends: 393 [2020-10-28 17:55:26,587 INFO L226 Difference]: Without dead ends: 295 [2020-10-28 17:55:26,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:55:26,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-10-28 17:55:26,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 259. [2020-10-28 17:55:26,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-28 17:55:26,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 380 transitions. [2020-10-28 17:55:26,664 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 380 transitions. Word has length 95 [2020-10-28 17:55:26,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:55:26,666 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 380 transitions. [2020-10-28 17:55:26,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:55:26,666 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 380 transitions. [2020-10-28 17:55:26,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-28 17:55:26,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:55:26,680 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:55:26,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:55:26,681 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:55:26,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:55:26,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1461980063, now seen corresponding path program 1 times [2020-10-28 17:55:26,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:55:26,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444553036] [2020-10-28 17:55:26,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:55:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:26,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:26,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:26,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:27,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:28,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:31,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:31,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 17:55:31,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:55:31,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 17:55:31,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:31,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:31,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:55:31,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:55:31,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 17:55:31,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:32,084 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:55:32,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:55:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:32,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:32,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:32,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:55:32,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:32,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:55:32,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:32,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:32,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:32,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:32,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:32,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:32,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:55:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:32,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:32,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:32,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:55:32,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:32,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 17:55:32,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:32,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:32,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:55:32,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:32,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:55:32,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:55:32,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:55:32,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:32,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:32,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:32,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:55:32,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:32,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:55:32,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:32,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:32,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:55:32,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:32,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:55:32,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:55:32,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:55:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:32,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:32,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:32,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:32,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:32,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:55:32,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:32,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:32,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:55:32,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:32,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:55:32,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:55:32,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:55:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:32,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:32,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:32,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:32,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:32,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:55:32,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:32,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:32,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:55:32,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:32,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:55:32,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:32,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 17:55:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:32,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:32,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:32,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:55:32,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:32,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:55:32,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:32,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:32,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:55:32,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 17:55:32,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:55:32,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:32,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 17:55:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:32,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:32,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:32,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:55:32,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:32,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:55:32,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:32,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:32,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:32,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:55:32,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:32,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:32,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:55:32,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444553036] [2020-10-28 17:55:32,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:55:32,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:55:32,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570522771] [2020-10-28 17:55:32,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:55:32,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:55:32,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:55:32,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:55:32,596 INFO L87 Difference]: Start difference. First operand 259 states and 380 transitions. Second operand 9 states. [2020-10-28 17:55:32,944 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:55:33,293 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 17:55:34,042 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-10-28 17:55:34,428 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-28 17:55:35,812 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:55:39,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:55:39,553 INFO L93 Difference]: Finished difference Result 1010 states and 1505 transitions. [2020-10-28 17:55:39,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:55:39,554 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2020-10-28 17:55:39,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:55:39,560 INFO L225 Difference]: With dead ends: 1010 [2020-10-28 17:55:39,560 INFO L226 Difference]: Without dead ends: 777 [2020-10-28 17:55:39,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:55:39,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2020-10-28 17:55:39,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 695. [2020-10-28 17:55:39,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-10-28 17:55:39,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1021 transitions. [2020-10-28 17:55:39,663 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1021 transitions. Word has length 97 [2020-10-28 17:55:39,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:55:39,664 INFO L481 AbstractCegarLoop]: Abstraction has 695 states and 1021 transitions. [2020-10-28 17:55:39,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:55:39,664 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1021 transitions. [2020-10-28 17:55:39,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-28 17:55:39,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:55:39,668 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] [2020-10-28 17:55:39,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:55:39,668 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:55:39,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:55:39,669 INFO L82 PathProgramCache]: Analyzing trace with hash -925501241, now seen corresponding path program 1 times [2020-10-28 17:55:39,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:55:39,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913206639] [2020-10-28 17:55:39,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:55:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:39,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:39,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:39,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:39,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:42,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:44,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:44,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 17:55:44,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:55:44,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 17:55:44,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:44,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:44,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:55:44,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:55:44,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 17:55:44,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:45,073 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:55:45,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:55:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:45,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:45,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:45,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:55:45,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:45,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:55:45,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:45,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:45,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:45,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:45,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:45,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:45,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:55:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:45,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:45,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:45,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:55:45,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:45,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 17:55:45,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:45,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:45,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:55:45,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:45,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:55:45,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:45,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:55:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:45,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:45,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:45,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:55:45,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:45,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:55:45,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:45,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:45,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:55:45,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:45,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:55:45,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:45,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:55:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:45,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:45,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:45,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:45,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:45,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:55:45,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:45,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:45,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:55:45,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:45,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:55:45,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:45,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:55:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:45,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:45,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:45,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:45,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:45,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:55:45,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:45,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:45,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:55:45,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:45,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:55:45,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:45,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 17:55:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:45,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:45,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:45,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:55:45,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:45,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:55:45,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:45,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:45,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:55:45,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:55:45,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:55:45,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:45,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 17:55:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:45,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:45,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:45,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:55:45,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:45,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:55:45,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:45,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:45,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:45,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:55:45,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:45,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:45,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:55:45,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913206639] [2020-10-28 17:55:45,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:55:45,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:55:45,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727453055] [2020-10-28 17:55:45,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:55:45,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:55:45,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:55:45,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:55:45,464 INFO L87 Difference]: Start difference. First operand 695 states and 1021 transitions. Second operand 9 states. [2020-10-28 17:55:45,819 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:55:46,146 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 17:55:46,588 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:55:46,931 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:55:47,813 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:55:50,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:55:50,568 INFO L93 Difference]: Finished difference Result 2122 states and 3140 transitions. [2020-10-28 17:55:50,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:55:50,569 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-10-28 17:55:50,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:55:50,578 INFO L225 Difference]: With dead ends: 2122 [2020-10-28 17:55:50,578 INFO L226 Difference]: Without dead ends: 1480 [2020-10-28 17:55:50,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:55:50,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2020-10-28 17:55:50,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1339. [2020-10-28 17:55:50,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1339 states. [2020-10-28 17:55:50,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 1923 transitions. [2020-10-28 17:55:50,690 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 1923 transitions. Word has length 98 [2020-10-28 17:55:50,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:55:50,691 INFO L481 AbstractCegarLoop]: Abstraction has 1339 states and 1923 transitions. [2020-10-28 17:55:50,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:55:50,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 1923 transitions. [2020-10-28 17:55:50,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-28 17:55:50,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:55:50,695 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] [2020-10-28 17:55:50,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:55:50,695 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:55:50,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:55:50,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1235398439, now seen corresponding path program 1 times [2020-10-28 17:55:50,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:55:50,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490482932] [2020-10-28 17:55:50,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:55:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:50,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:50,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:50,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:50,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:51,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:54,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:55,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:55,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 17:55:55,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:55:55,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 17:55:55,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:55,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:55,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:55:55,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:55:55,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 17:55:55,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:56,084 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:55:56,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:55:56,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:56,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:56,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:56,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:55:56,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:56,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:55:56,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:56,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:56,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:56,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:56,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:56,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:56,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:55:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:56,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:56,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:56,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:55:56,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:56,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 17:55:56,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:56,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:56,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:55:56,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:56,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:55:56,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:56,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:55:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:56,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:56,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:56,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:55:56,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:56,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:55:56,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:56,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:56,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:55:56,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:56,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:55:56,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:56,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:55:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:56,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:56,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:56,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:56,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:56,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:55:56,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:56,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:56,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:55:56,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:56,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:55:56,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:56,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:55:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:56,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:56,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:56,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:56,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:56,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:55:56,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:56,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:56,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:55:56,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:56,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:55:56,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:55:56,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 17:55:56,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:56,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:56,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:56,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:55:56,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:56,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:55:56,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:56,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:56,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:55:56,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:55:56,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:55:56,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:55:56,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 17:55:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:56,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:56,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:56,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:55:56,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:56,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:55:56,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:56,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:56,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:56,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:55:56,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:56,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:55:56,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:55:56,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490482932] [2020-10-28 17:55:56,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:55:56,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:55:56,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024587699] [2020-10-28 17:55:56,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:55:56,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:55:56,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:55:56,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:55:56,494 INFO L87 Difference]: Start difference. First operand 1339 states and 1923 transitions. Second operand 9 states. [2020-10-28 17:55:56,870 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:55:57,215 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 17:55:57,684 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:55:58,053 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:55:59,003 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:56:01,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:56:01,789 INFO L93 Difference]: Finished difference Result 4118 states and 5960 transitions. [2020-10-28 17:56:01,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:56:01,789 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-10-28 17:56:01,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:56:01,810 INFO L225 Difference]: With dead ends: 4118 [2020-10-28 17:56:01,810 INFO L226 Difference]: Without dead ends: 2811 [2020-10-28 17:56:01,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:56:01,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2020-10-28 17:56:02,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 2568. [2020-10-28 17:56:02,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2568 states. [2020-10-28 17:56:02,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2568 states to 2568 states and 3611 transitions. [2020-10-28 17:56:02,070 INFO L78 Accepts]: Start accepts. Automaton has 2568 states and 3611 transitions. Word has length 98 [2020-10-28 17:56:02,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:56:02,073 INFO L481 AbstractCegarLoop]: Abstraction has 2568 states and 3611 transitions. [2020-10-28 17:56:02,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:56:02,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2568 states and 3611 transitions. [2020-10-28 17:56:02,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-28 17:56:02,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:56:02,080 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] [2020-10-28 17:56:02,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:56:02,080 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:56:02,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:56:02,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1853492162, now seen corresponding path program 1 times [2020-10-28 17:56:02,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:56:02,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643639811] [2020-10-28 17:56:02,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:56:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:02,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:02,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:02,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:02,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:02,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:02,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:07,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:07,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 17:56:07,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:56:07,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 17:56:07,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:07,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:07,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:56:07,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:56:07,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 17:56:07,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:07,487 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:56:07,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:56:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:07,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:07,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:07,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:56:07,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:07,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:56:07,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:07,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:07,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:07,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:07,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:07,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:07,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:56:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:07,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:07,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:07,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:07,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:07,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 17:56:07,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:56:07,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-28 17:56:07,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:07,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:07,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:56:07,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:56:07,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:56:07,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:56:07,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 17:56:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:07,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:07,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:07,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:56:07,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:07,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:56:07,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:07,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:07,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:07,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:07,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:56:07,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:56:07,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 17:56:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:07,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:07,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:07,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:56:07,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:07,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:56:07,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:07,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:07,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:07,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:07,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:56:07,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:07,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 17:56:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:07,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:07,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:07,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:56:07,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:07,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:56:07,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:07,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:07,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:07,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:07,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:56:07,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:08,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-28 17:56:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:08,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:08,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:08,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:56:08,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:08,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:56:08,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:08,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:08,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:08,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 17:56:08,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:56:08,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:08,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:56:08,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:08,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:08,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:08,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:56:08,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:08,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:56:08,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:08,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:08,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:08,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:56:08,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:08,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:08,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:56:08,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643639811] [2020-10-28 17:56:08,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:56:08,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:56:08,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408885230] [2020-10-28 17:56:08,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:56:08,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:56:08,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:56:08,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:56:08,127 INFO L87 Difference]: Start difference. First operand 2568 states and 3611 transitions. Second operand 10 states. [2020-10-28 17:56:08,502 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:56:08,940 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:56:09,631 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 17:56:10,041 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:56:10,493 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-28 17:56:10,854 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-28 17:56:11,270 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-28 17:56:11,660 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-28 17:56:17,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:56:17,094 INFO L93 Difference]: Finished difference Result 3992 states and 5591 transitions. [2020-10-28 17:56:17,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 17:56:17,096 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 99 [2020-10-28 17:56:17,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:56:17,111 INFO L225 Difference]: With dead ends: 3992 [2020-10-28 17:56:17,111 INFO L226 Difference]: Without dead ends: 2752 [2020-10-28 17:56:17,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2020-10-28 17:56:17,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2752 states. [2020-10-28 17:56:17,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2752 to 2111. [2020-10-28 17:56:17,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2111 states. [2020-10-28 17:56:17,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2111 states to 2111 states and 2966 transitions. [2020-10-28 17:56:17,284 INFO L78 Accepts]: Start accepts. Automaton has 2111 states and 2966 transitions. Word has length 99 [2020-10-28 17:56:17,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:56:17,285 INFO L481 AbstractCegarLoop]: Abstraction has 2111 states and 2966 transitions. [2020-10-28 17:56:17,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:56:17,285 INFO L276 IsEmpty]: Start isEmpty. Operand 2111 states and 2966 transitions. [2020-10-28 17:56:17,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-28 17:56:17,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:56:17,291 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] [2020-10-28 17:56:17,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 17:56:17,291 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:56:17,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:56:17,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1460462812, now seen corresponding path program 1 times [2020-10-28 17:56:17,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:56:17,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001587653] [2020-10-28 17:56:17,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:56:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:17,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:17,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:17,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:17,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:18,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:22,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:22,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 17:56:22,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:56:22,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 17:56:22,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:22,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:22,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:56:22,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 17:56:22,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 17:56:22,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:22,657 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:56:22,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:56:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:22,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:22,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:22,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:56:22,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:22,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:56:22,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:22,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:22,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:22,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:22,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:22,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:22,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:56:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:22,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:22,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:22,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:56:22,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:22,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 17:56:22,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:22,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:22,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:22,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:22,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 17:56:22,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:56:22,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:56:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:22,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:22,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:22,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:56:22,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:22,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:56:22,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:22,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:22,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:22,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:22,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:56:22,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:22,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:56:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:22,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:22,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:22,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:56:22,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:22,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:56:22,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:22,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:22,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:22,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:22,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:56:22,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:22,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:56:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:22,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:22,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:22,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:56:22,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:22,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:56:22,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:22,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:22,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:56:22,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:56:22,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:56:22,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:22,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 17:56:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:22,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:22,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:22,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:56:22,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:22,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:56:22,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:22,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:56:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:22,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:22,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:56:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:22,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:22,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:22,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:56:22,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:22,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:56:22,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:22,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:22,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:22,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:56:22,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:22,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:22,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:56:22,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001587653] [2020-10-28 17:56:22,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:56:22,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:56:22,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994885648] [2020-10-28 17:56:22,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:56:22,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:56:22,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:56:22,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:56:22,983 INFO L87 Difference]: Start difference. First operand 2111 states and 2966 transitions. Second operand 9 states. [2020-10-28 17:56:23,293 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 17:56:25,804 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 17:56:26,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:56:26,056 INFO L93 Difference]: Finished difference Result 4895 states and 7104 transitions. [2020-10-28 17:56:26,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:56:26,057 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-10-28 17:56:26,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:56:26,077 INFO L225 Difference]: With dead ends: 4895 [2020-10-28 17:56:26,077 INFO L226 Difference]: Without dead ends: 3473 [2020-10-28 17:56:26,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:56:26,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3473 states. [2020-10-28 17:56:26,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3473 to 3094. [2020-10-28 17:56:26,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3094 states. [2020-10-28 17:56:26,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3094 states to 3094 states and 4404 transitions. [2020-10-28 17:56:26,372 INFO L78 Accepts]: Start accepts. Automaton has 3094 states and 4404 transitions. Word has length 99 [2020-10-28 17:56:26,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:56:26,372 INFO L481 AbstractCegarLoop]: Abstraction has 3094 states and 4404 transitions. [2020-10-28 17:56:26,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:56:26,373 INFO L276 IsEmpty]: Start isEmpty. Operand 3094 states and 4404 transitions. [2020-10-28 17:56:26,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 17:56:26,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:56:26,380 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] [2020-10-28 17:56:26,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 17:56:26,381 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:56:26,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:56:26,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1350988537, now seen corresponding path program 1 times [2020-10-28 17:56:26,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:56:26,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790305318] [2020-10-28 17:56:26,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:56:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:26,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:26,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:26,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:26,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:26,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:28,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:28,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:31,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:31,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 17:56:31,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:56:31,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 17:56:31,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:31,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:31,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:56:31,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:56:31,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 17:56:31,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:31,747 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:56:31,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:56:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:31,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:31,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:31,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:56:31,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:31,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:56:31,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:31,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:31,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:31,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:31,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:31,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:31,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:56:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:31,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:31,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:31,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:31,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:31,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 17:56:31,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:56:31,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 17:56:31,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:31,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:31,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:56:31,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:56:31,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 17:56:31,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:31,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 17:56:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:31,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:31,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:31,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:56:31,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:31,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:56:31,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:31,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:31,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:31,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:31,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:56:31,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:32,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 17:56:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:32,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:32,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:32,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:56:32,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:32,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:56:32,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:32,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:32,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:32,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:32,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:56:32,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:32,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 17:56:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:32,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:32,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:32,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:56:32,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:32,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:56:32,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:32,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:32,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:32,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:32,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:56:32,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:32,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 17:56:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:32,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:32,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:32,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:56:32,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:32,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:56:32,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:32,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:32,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:32,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:56:32,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:56:32,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:32,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 17:56:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:32,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:32,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:32,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:56:32,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:32,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:56:32,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:32,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:32,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:32,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:56:32,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:32,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:32,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:56:32,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790305318] [2020-10-28 17:56:32,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:56:32,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:56:32,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632719469] [2020-10-28 17:56:32,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:56:32,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:56:32,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:56:32,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:56:32,190 INFO L87 Difference]: Start difference. First operand 3094 states and 4404 transitions. Second operand 10 states. [2020-10-28 17:56:32,565 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:56:33,098 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 17:56:33,476 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:56:33,824 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-28 17:56:34,185 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-28 17:56:34,571 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 17:56:39,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:56:39,722 INFO L93 Difference]: Finished difference Result 8163 states and 11885 transitions. [2020-10-28 17:56:39,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 17:56:39,723 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 101 [2020-10-28 17:56:39,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:56:39,748 INFO L225 Difference]: With dead ends: 8163 [2020-10-28 17:56:39,749 INFO L226 Difference]: Without dead ends: 5386 [2020-10-28 17:56:39,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-10-28 17:56:39,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5386 states. [2020-10-28 17:56:40,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5386 to 4833. [2020-10-28 17:56:40,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4833 states. [2020-10-28 17:56:40,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4833 states to 4833 states and 6939 transitions. [2020-10-28 17:56:40,229 INFO L78 Accepts]: Start accepts. Automaton has 4833 states and 6939 transitions. Word has length 101 [2020-10-28 17:56:40,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:56:40,230 INFO L481 AbstractCegarLoop]: Abstraction has 4833 states and 6939 transitions. [2020-10-28 17:56:40,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:56:40,230 INFO L276 IsEmpty]: Start isEmpty. Operand 4833 states and 6939 transitions. [2020-10-28 17:56:40,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-28 17:56:40,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:56:40,238 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] [2020-10-28 17:56:40,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 17:56:40,238 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:56:40,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:56:40,239 INFO L82 PathProgramCache]: Analyzing trace with hash 353762204, now seen corresponding path program 1 times [2020-10-28 17:56:40,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:56:40,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164216263] [2020-10-28 17:56:40,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:56:40,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:40,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:40,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:40,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:40,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:41,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:42,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:45,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:45,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 17:56:45,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:56:45,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 17:56:45,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:45,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:45,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:56:45,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:56:45,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 17:56:45,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:45,619 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:56:45,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:56:45,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:45,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:45,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:45,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:56:45,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:45,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:56:45,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:45,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:45,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:45,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:45,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:45,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:45,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:56:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:45,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:45,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:45,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:56:45,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:45,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 17:56:45,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:45,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:45,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:56:45,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:45,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:56:45,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:45,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:56:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:45,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:45,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:45,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:56:45,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:45,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:56:45,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:45,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:45,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:45,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:45,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:56:45,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:45,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:56:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:45,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:45,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:45,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:56:45,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:45,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 17:56:45,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:45,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:45,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:45,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:45,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:56:45,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:45,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:56:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:45,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:45,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:45,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:56:45,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:45,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:56:45,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:45,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:45,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:45,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:56:45,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:56:45,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:45,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 17:56:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:45,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:45,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:45,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:56:45,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:45,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:56:45,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:45,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:45,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:45,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:56:45,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:45,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:45,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 17:56:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:45,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:45,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:45,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:56:45,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:45,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:56:45,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:45,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:45,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:45,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:56:45,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:45,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:46,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:56:46,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164216263] [2020-10-28 17:56:46,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:56:46,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:56:46,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481326715] [2020-10-28 17:56:46,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:56:46,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:56:46,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:56:46,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:56:46,017 INFO L87 Difference]: Start difference. First operand 4833 states and 6939 transitions. Second operand 9 states. [2020-10-28 17:56:46,444 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:56:46,873 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 17:56:47,338 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 17:56:48,208 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:56:52,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:56:52,013 INFO L93 Difference]: Finished difference Result 12966 states and 18950 transitions. [2020-10-28 17:56:52,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:56:52,014 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-10-28 17:56:52,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:56:52,061 INFO L225 Difference]: With dead ends: 12966 [2020-10-28 17:56:52,062 INFO L226 Difference]: Without dead ends: 8792 [2020-10-28 17:56:52,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2020-10-28 17:56:52,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8792 states. [2020-10-28 17:56:52,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8792 to 7952. [2020-10-28 17:56:52,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7952 states. [2020-10-28 17:56:52,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7952 states to 7952 states and 11367 transitions. [2020-10-28 17:56:52,852 INFO L78 Accepts]: Start accepts. Automaton has 7952 states and 11367 transitions. Word has length 102 [2020-10-28 17:56:52,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:56:52,853 INFO L481 AbstractCegarLoop]: Abstraction has 7952 states and 11367 transitions. [2020-10-28 17:56:52,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:56:52,853 INFO L276 IsEmpty]: Start isEmpty. Operand 7952 states and 11367 transitions. [2020-10-28 17:56:52,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-28 17:56:52,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:56:52,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:56:52,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 17:56:52,866 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:56:52,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:56:52,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1237430791, now seen corresponding path program 1 times [2020-10-28 17:56:52,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:56:52,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839549214] [2020-10-28 17:56:52,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:56:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:52,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:52,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:53,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:53,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:53,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:54,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:57,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:57,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-28 17:56:57,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:56:57,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 17:56:57,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:57,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:57,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:56:57,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:56:57,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 17:56:57,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:58,241 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:56:58,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:56:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:58,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:58,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:58,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:56:58,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:58,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:56:58,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:58,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:58,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:58,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:58,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:58,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:58,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:56:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:58,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:58,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:58,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:56:58,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:58,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 17:56:58,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:58,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:58,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:56:58,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:58,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 17:56:58,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:58,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:56:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:58,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:58,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:58,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:56:58,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:58,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:56:58,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:58,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:58,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:58,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:58,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:56:58,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:58,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:56:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:58,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:58,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:58,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:56:58,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:58,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:56:58,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:58,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:58,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:58,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:58,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:56:58,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:58,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:56:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:58,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:58,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:58,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:56:58,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:58,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:56:58,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:58,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:58,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:58,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:56:58,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:56:58,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:58,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:56:58,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:58,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:58,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:58,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:56:58,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:58,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:56:58,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:58,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:58,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:58,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:56:58,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:58,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:58,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 17:56:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:58,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:58,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:58,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:56:58,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:58,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:56:58,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:58,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:58,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:58,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:56:58,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:58,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:58,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:56:58,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839549214] [2020-10-28 17:56:58,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:56:58,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:56:58,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107373671] [2020-10-28 17:56:58,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:56:58,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:56:58,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:56:58,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:56:58,551 INFO L87 Difference]: Start difference. First operand 7952 states and 11367 transitions. Second operand 9 states. [2020-10-28 17:56:58,927 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:56:59,268 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 17:56:59,619 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:57:00,037 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:57:01,146 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:57:04,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:57:04,551 INFO L93 Difference]: Finished difference Result 24402 states and 35158 transitions. [2020-10-28 17:57:04,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:57:04,552 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-28 17:57:04,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:57:04,616 INFO L225 Difference]: With dead ends: 24402 [2020-10-28 17:57:04,616 INFO L226 Difference]: Without dead ends: 16480 [2020-10-28 17:57:04,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:57:04,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16480 states. [2020-10-28 17:57:05,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16480 to 15133. [2020-10-28 17:57:05,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15133 states. [2020-10-28 17:57:05,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15133 states to 15133 states and 21336 transitions. [2020-10-28 17:57:05,926 INFO L78 Accepts]: Start accepts. Automaton has 15133 states and 21336 transitions. Word has length 103 [2020-10-28 17:57:05,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:57:05,926 INFO L481 AbstractCegarLoop]: Abstraction has 15133 states and 21336 transitions. [2020-10-28 17:57:05,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:57:05,926 INFO L276 IsEmpty]: Start isEmpty. Operand 15133 states and 21336 transitions. [2020-10-28 17:57:05,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-28 17:57:05,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:57:05,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:57:05,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 17:57:05,948 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:57:05,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:57:05,949 INFO L82 PathProgramCache]: Analyzing trace with hash 679613588, now seen corresponding path program 1 times [2020-10-28 17:57:05,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:57:05,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302923785] [2020-10-28 17:57:05,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:57:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:05,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:06,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:06,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:06,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:06,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:07,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:10,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:10,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-28 17:57:10,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:57:10,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 17:57:10,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:10,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:10,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:57:10,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 17:57:10,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 17:57:10,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:11,315 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:57:11,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:57:11,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:11,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:11,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:11,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:57:11,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:11,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:57:11,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:11,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:11,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:11,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:11,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:11,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:11,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:57:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:11,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:11,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:11,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:57:11,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:11,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:57:11,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:11,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:11,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:11,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:11,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 17:57:11,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:11,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:57:11,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:11,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:11,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:11,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:57:11,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:11,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:57:11,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:11,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:11,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:11,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:11,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:57:11,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:11,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:57:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:11,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:11,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:11,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:57:11,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:11,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:57:11,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:11,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:11,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:11,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:11,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:57:11,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:11,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:57:11,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:11,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:11,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:11,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:57:11,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:11,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:57:11,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:11,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:11,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:11,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:11,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:57:11,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:11,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:57:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:11,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:11,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:11,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:11,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:57:11,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:57:11,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 17:57:11,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:11,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:11,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:57:11,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:57:11,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:57:11,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:11,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 17:57:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:11,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:11,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:11,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:57:11,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:11,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:57:11,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:11,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:11,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:11,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:57:11,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:11,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:11,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:57:11,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302923785] [2020-10-28 17:57:11,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:57:11,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:57:11,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469952424] [2020-10-28 17:57:11,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:57:11,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:57:11,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:57:11,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:57:11,605 INFO L87 Difference]: Start difference. First operand 15133 states and 21336 transitions. Second operand 9 states. [2020-10-28 17:57:12,505 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:57:13,795 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 17:57:16,182 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:57:16,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:57:16,981 INFO L93 Difference]: Finished difference Result 32767 states and 46602 transitions. [2020-10-28 17:57:16,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:57:16,982 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-28 17:57:16,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:57:17,067 INFO L225 Difference]: With dead ends: 32767 [2020-10-28 17:57:17,067 INFO L226 Difference]: Without dead ends: 21287 [2020-10-28 17:57:17,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:57:17,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21287 states. [2020-10-28 17:57:18,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21287 to 19574. [2020-10-28 17:57:18,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19574 states. [2020-10-28 17:57:18,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19574 states to 19574 states and 27538 transitions. [2020-10-28 17:57:18,676 INFO L78 Accepts]: Start accepts. Automaton has 19574 states and 27538 transitions. Word has length 103 [2020-10-28 17:57:18,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:57:18,676 INFO L481 AbstractCegarLoop]: Abstraction has 19574 states and 27538 transitions. [2020-10-28 17:57:18,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:57:18,676 INFO L276 IsEmpty]: Start isEmpty. Operand 19574 states and 27538 transitions. [2020-10-28 17:57:18,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-28 17:57:18,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:57:18,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:57:18,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 17:57:18,693 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:57:18,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:57:18,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1434345729, now seen corresponding path program 1 times [2020-10-28 17:57:18,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:57:18,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816300728] [2020-10-28 17:57:18,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:57:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:18,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:18,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:19,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:19,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:19,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:19,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:19,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:23,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:23,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-28 17:57:23,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:57:23,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 17:57:23,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:23,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:23,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:57:23,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:57:23,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 17:57:23,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:24,084 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:57:24,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:57:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:24,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:24,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:24,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:57:24,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:24,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:57:24,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:24,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:24,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:24,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:24,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:24,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:24,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:57:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:24,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:24,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:24,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:57:24,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:24,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 17:57:24,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:24,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:24,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:57:24,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:24,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:57:24,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:24,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:57:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:24,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:24,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:24,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:57:24,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:24,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:57:24,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:24,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:24,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:24,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:24,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:57:24,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:24,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:57:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:24,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:24,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:24,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:57:24,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:24,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:57:24,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:24,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:24,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:24,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:24,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:57:24,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:24,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:57:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:24,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:24,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:24,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:57:24,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:24,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:57:24,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:24,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:24,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:24,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:24,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:57:24,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:24,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:57:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:24,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:24,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:24,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:57:24,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:24,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:57:24,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:24,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:24,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:24,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:57:24,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:57:24,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:24,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 17:57:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:24,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:24,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:24,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:57:24,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:24,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:57:24,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:24,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:24,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:24,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:57:24,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:24,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:24,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:57:24,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816300728] [2020-10-28 17:57:24,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:57:24,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:57:24,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918821886] [2020-10-28 17:57:24,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:57:24,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:57:24,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:57:24,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:57:24,390 INFO L87 Difference]: Start difference. First operand 19574 states and 27538 transitions. Second operand 9 states. [2020-10-28 17:57:24,754 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:57:25,081 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 17:57:25,435 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:57:25,786 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:57:26,682 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:57:30,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:57:30,081 INFO L93 Difference]: Finished difference Result 40569 states and 56960 transitions. [2020-10-28 17:57:30,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:57:30,082 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-28 17:57:30,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:57:30,159 INFO L225 Difference]: With dead ends: 40569 [2020-10-28 17:57:30,159 INFO L226 Difference]: Without dead ends: 22363 [2020-10-28 17:57:30,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:57:30,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22363 states. [2020-10-28 17:57:31,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22363 to 20250. [2020-10-28 17:57:31,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20250 states. [2020-10-28 17:57:31,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20250 states to 20250 states and 28310 transitions. [2020-10-28 17:57:31,819 INFO L78 Accepts]: Start accepts. Automaton has 20250 states and 28310 transitions. Word has length 103 [2020-10-28 17:57:31,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:57:31,820 INFO L481 AbstractCegarLoop]: Abstraction has 20250 states and 28310 transitions. [2020-10-28 17:57:31,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:57:31,820 INFO L276 IsEmpty]: Start isEmpty. Operand 20250 states and 28310 transitions. [2020-10-28 17:57:31,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 17:57:31,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:57:31,832 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] [2020-10-28 17:57:31,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 17:57:31,833 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:57:31,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:57:31,833 INFO L82 PathProgramCache]: Analyzing trace with hash 639937105, now seen corresponding path program 1 times [2020-10-28 17:57:31,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:57:31,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537413510] [2020-10-28 17:57:31,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:57:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:31,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:31,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:31,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:32,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:32,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:32,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:33,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:36,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:36,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 17:57:36,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:57:36,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 17:57:36,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:36,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:36,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:57:36,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-28 17:57:36,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 17:57:36,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:37,204 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:57:37,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:57:37,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:37,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:37,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:37,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:57:37,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:37,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:57:37,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:37,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:37,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:37,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:37,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:37,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:37,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:57:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:37,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:37,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:37,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:57:37,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:37,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 17:57:37,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:37,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:37,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:37,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:37,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 17:57:37,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:37,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:57:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:37,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:37,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:37,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:57:37,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:37,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:57:37,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:37,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:37,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:37,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:37,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:57:37,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:37,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:57:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:37,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:37,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:37,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:57:37,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:37,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:57:37,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:37,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:37,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:37,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:37,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:57:37,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:57:37,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:57:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:37,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:37,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:37,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:57:37,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:37,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:57:37,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:37,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:37,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:37,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:37,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:57:37,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:37,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:57:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:37,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:37,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:37,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:57:37,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:37,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:57:37,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:37,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:37,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:57:37,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:57:37,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:57:37,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:37,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-28 17:57:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:37,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:37,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:37,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:57:37,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:37,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:57:37,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:37,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:37,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:37,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:57:37,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:37,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:37,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:57:37,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537413510] [2020-10-28 17:57:37,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:57:37,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:57:37,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595539871] [2020-10-28 17:57:37,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:57:37,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:57:37,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:57:37,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:57:37,535 INFO L87 Difference]: Start difference. First operand 20250 states and 28310 transitions. Second operand 9 states. [2020-10-28 17:57:37,900 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:57:39,449 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-28 17:57:41,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:57:41,903 INFO L93 Difference]: Finished difference Result 36252 states and 51051 transitions. [2020-10-28 17:57:41,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:57:41,904 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2020-10-28 17:57:41,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:57:41,985 INFO L225 Difference]: With dead ends: 36252 [2020-10-28 17:57:41,985 INFO L226 Difference]: Without dead ends: 25614 [2020-10-28 17:57:42,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:57:42,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25614 states. [2020-10-28 17:57:43,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25614 to 24027. [2020-10-28 17:57:43,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24027 states. [2020-10-28 17:57:43,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24027 states to 24027 states and 33581 transitions. [2020-10-28 17:57:43,845 INFO L78 Accepts]: Start accepts. Automaton has 24027 states and 33581 transitions. Word has length 104 [2020-10-28 17:57:43,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:57:43,845 INFO L481 AbstractCegarLoop]: Abstraction has 24027 states and 33581 transitions. [2020-10-28 17:57:43,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:57:43,845 INFO L276 IsEmpty]: Start isEmpty. Operand 24027 states and 33581 transitions. [2020-10-28 17:57:43,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-28 17:57:43,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:57:43,857 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] [2020-10-28 17:57:43,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 17:57:43,857 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:57:43,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:57:43,857 INFO L82 PathProgramCache]: Analyzing trace with hash -240591635, now seen corresponding path program 1 times [2020-10-28 17:57:43,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:57:43,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768345998] [2020-10-28 17:57:43,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:57:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:43,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:43,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:43,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:44,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:46,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:46,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 17:57:46,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:57:46,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2345 [2020-10-28 17:57:46,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:46,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:46,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:57:46,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 17:57:46,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 17:57:46,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:46,555 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:57:46,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:57:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:46,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:46,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:46,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:57:46,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:46,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:57:46,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:46,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:46,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:46,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:46,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:46,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:46,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:57:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:46,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:46,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:46,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-28 17:57:46,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:46,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 17:57:46,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:46,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:46,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:46,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:46,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 17:57:46,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:46,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:57:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:46,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:46,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:46,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:57:46,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:46,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:57:46,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:46,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:46,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:46,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:46,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:57:46,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:46,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:57:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:46,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:46,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:46,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:57:46,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:46,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:57:46,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:46,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:46,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:57:46,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:57:46,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:57:46,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:46,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 17:57:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:46,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:46,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:46,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:57:46,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:46,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:57:46,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:46,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:46,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:46,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:57:46,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:46,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:46,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 17:57:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:46,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:46,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:46,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:57:46,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:46,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:57:46,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:46,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:46,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:46,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 17:57:46,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:46,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:46,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 17:57:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:46,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:46,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:46,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:57:46,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:46,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:57:46,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:46,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:46,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:46,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:57:46,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:46,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:46,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:57:46,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768345998] [2020-10-28 17:57:46,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:57:46,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:57:46,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370187566] [2020-10-28 17:57:46,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:57:46,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:57:46,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:57:46,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:57:46,846 INFO L87 Difference]: Start difference. First operand 24027 states and 33581 transitions. Second operand 9 states. [2020-10-28 17:57:47,189 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 17:57:49,799 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 17:57:52,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:57:52,743 INFO L93 Difference]: Finished difference Result 64543 states and 90675 transitions. [2020-10-28 17:57:52,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:57:52,744 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-28 17:57:52,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:57:52,903 INFO L225 Difference]: With dead ends: 64543 [2020-10-28 17:57:52,903 INFO L226 Difference]: Without dead ends: 42935 [2020-10-28 17:57:52,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:57:52,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42935 states. [2020-10-28 17:57:55,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42935 to 37962. [2020-10-28 17:57:55,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37962 states. [2020-10-28 17:57:56,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37962 states to 37962 states and 51624 transitions. [2020-10-28 17:57:56,009 INFO L78 Accepts]: Start accepts. Automaton has 37962 states and 51624 transitions. Word has length 106 [2020-10-28 17:57:56,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:57:56,010 INFO L481 AbstractCegarLoop]: Abstraction has 37962 states and 51624 transitions. [2020-10-28 17:57:56,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:57:56,010 INFO L276 IsEmpty]: Start isEmpty. Operand 37962 states and 51624 transitions. [2020-10-28 17:57:56,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-28 17:57:56,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:57:56,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:57:56,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 17:57:56,023 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:57:56,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:57:56,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1508862611, now seen corresponding path program 1 times [2020-10-28 17:57:56,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:57:56,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607495926] [2020-10-28 17:57:56,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:57:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:56,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:56,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:56,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:56,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:56,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:01,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:01,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 17:58:01,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:58:01,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 17:58:01,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:01,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:01,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:58:01,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 17:58:01,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 17:58:01,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:01,392 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:58:01,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:58:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:01,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:01,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:01,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:58:01,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:01,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:58:01,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:01,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:01,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:01,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:01,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:01,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:01,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:58:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:01,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:01,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:01,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:01,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:01,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:01,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-28 17:58:01,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:58:01,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 483 [2020-10-28 17:58:01,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:01,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:01,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:01,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:01,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 17:58:01,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:01,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 17:58:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:01,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:01,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:01,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:58:01,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:01,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:58:01,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:01,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:01,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:01,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:01,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:58:01,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:01,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 17:58:01,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:01,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:01,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:01,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:58:01,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:01,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:58:01,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:01,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:01,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:01,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:01,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:58:01,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:01,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 17:58:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:01,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:02,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:02,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:58:02,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:02,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:58:02,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:02,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:02,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:58:02,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:58:02,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:58:02,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:02,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-28 17:58:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:02,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:02,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:02,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:58:02,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:02,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:58:02,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:02,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:02,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:02,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 17:58:02,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:02,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:02,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 17:58:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:02,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:02,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:02,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:58:02,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:02,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:58:02,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:02,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:02,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:02,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:58:02,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:02,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:02,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:58:02,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607495926] [2020-10-28 17:58:02,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:58:02,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:58:02,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046412161] [2020-10-28 17:58:02,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:58:02,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:58:02,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:58:02,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:58:02,120 INFO L87 Difference]: Start difference. First operand 37962 states and 51624 transitions. Second operand 9 states. [2020-10-28 17:58:02,482 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:58:08,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:58:08,257 INFO L93 Difference]: Finished difference Result 71254 states and 97410 transitions. [2020-10-28 17:58:08,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:58:08,258 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 109 [2020-10-28 17:58:08,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:58:08,445 INFO L225 Difference]: With dead ends: 71254 [2020-10-28 17:58:08,445 INFO L226 Difference]: Without dead ends: 51301 [2020-10-28 17:58:08,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:58:08,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51301 states. [2020-10-28 17:58:12,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51301 to 48156. [2020-10-28 17:58:12,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48156 states. [2020-10-28 17:58:12,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48156 states to 48156 states and 65516 transitions. [2020-10-28 17:58:12,851 INFO L78 Accepts]: Start accepts. Automaton has 48156 states and 65516 transitions. Word has length 109 [2020-10-28 17:58:12,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:58:12,852 INFO L481 AbstractCegarLoop]: Abstraction has 48156 states and 65516 transitions. [2020-10-28 17:58:12,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:58:12,852 INFO L276 IsEmpty]: Start isEmpty. Operand 48156 states and 65516 transitions. [2020-10-28 17:58:12,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-28 17:58:12,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:58:12,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:58:12,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 17:58:12,861 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:58:12,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:58:12,862 INFO L82 PathProgramCache]: Analyzing trace with hash -732417942, now seen corresponding path program 1 times [2020-10-28 17:58:12,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:58:12,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416046508] [2020-10-28 17:58:12,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:58:12,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:12,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:12,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:12,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:13,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:13,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:13,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:17,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:17,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 17:58:17,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:58:17,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 17:58:17,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:17,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:17,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:58:17,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 17:58:17,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 17:58:17,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:18,243 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:58:18,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:58:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:18,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:18,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:18,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:58:18,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:18,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:58:18,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:18,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:18,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:18,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:18,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:18,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:18,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:58:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:18,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:18,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:18,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-28 17:58:18,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:18,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:58:18,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:18,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:18,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:18,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:18,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 17:58:18,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:18,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:58:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:18,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:18,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:18,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:58:18,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:18,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:58:18,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:18,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:18,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:18,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:18,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:58:18,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:18,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:58:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:18,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:18,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:18,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:58:18,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:18,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:58:18,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:18,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:18,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:58:18,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:58:18,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:58:18,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:18,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 17:58:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:18,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:18,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:18,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:58:18,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:18,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:58:18,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:18,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:18,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:18,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:58:18,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:18,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:18,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 17:58:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:18,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:18,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:18,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:58:18,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:18,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:58:18,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:18,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:18,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:18,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 17:58:18,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:18,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:18,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 17:58:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:18,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:18,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:18,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:58:18,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:18,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:58:18,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:18,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:18,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:18,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:58:18,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:18,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:18,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:58:18,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416046508] [2020-10-28 17:58:18,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:58:18,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:58:18,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789447557] [2020-10-28 17:58:18,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:58:18,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:58:18,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:58:18,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:58:18,621 INFO L87 Difference]: Start difference. First operand 48156 states and 65516 transitions. Second operand 10 states. [2020-10-28 17:58:18,999 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 17:58:20,064 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-28 17:58:22,059 WARN L193 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 190 [2020-10-28 17:58:22,762 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 76 [2020-10-28 17:58:27,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:58:27,206 INFO L93 Difference]: Finished difference Result 85726 states and 120323 transitions. [2020-10-28 17:58:27,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:58:27,207 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 110 [2020-10-28 17:58:27,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:58:27,658 INFO L225 Difference]: With dead ends: 85726 [2020-10-28 17:58:27,658 INFO L226 Difference]: Without dead ends: 59029 [2020-10-28 17:58:27,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2020-10-28 17:58:27,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59029 states. [2020-10-28 17:58:32,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59029 to 48468. [2020-10-28 17:58:32,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48468 states. [2020-10-28 17:58:32,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48468 states to 48468 states and 65802 transitions. [2020-10-28 17:58:32,415 INFO L78 Accepts]: Start accepts. Automaton has 48468 states and 65802 transitions. Word has length 110 [2020-10-28 17:58:32,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:58:32,415 INFO L481 AbstractCegarLoop]: Abstraction has 48468 states and 65802 transitions. [2020-10-28 17:58:32,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:58:32,415 INFO L276 IsEmpty]: Start isEmpty. Operand 48468 states and 65802 transitions. [2020-10-28 17:58:32,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-28 17:58:32,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:58:32,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:58:32,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 17:58:32,422 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:58:32,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:58:32,422 INFO L82 PathProgramCache]: Analyzing trace with hash 460737949, now seen corresponding path program 1 times [2020-10-28 17:58:32,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:58:32,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093519921] [2020-10-28 17:58:32,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:58:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:32,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:32,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:32,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:32,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:33,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking...