/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:04:53,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:04:53,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:04:53,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:04:53,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:04:53,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:04:53,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:04:53,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:04:53,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:04:53,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:04:53,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:04:53,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:04:53,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:04:53,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:04:53,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:04:53,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:04:53,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:04:53,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:04:53,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:04:53,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:04:53,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:04:53,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:04:53,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:04:53,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:04:53,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:04:53,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:04:53,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:04:53,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:04:53,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:04:53,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:04:53,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:04:53,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:04:53,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:04:53,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:04:53,711 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:04:53,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:04:53,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:04:53,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:04:53,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:04:53,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:04:53,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:04:53,721 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 23:04:53,757 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:04:53,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:04:53,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:04:53,759 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:04:53,759 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:04:53,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:04:53,760 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:04:53,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:04:53,760 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:04:53,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:04:53,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:04:53,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:04:53,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:04:53,761 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:04:53,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:04:53,762 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:04:53,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:04:53,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:04:53,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:04:53,763 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:04:53,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:04:53,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:04:53,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:04:53,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:04:53,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:04:53,764 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:04:53,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:04:53,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:04:53,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:04:53,765 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:04:54,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:04:54,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:04:54,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:04:54,200 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:04:54,201 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:04:54,202 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c [2020-10-27 23:04:54,290 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29bbe03ae/c5eaffea54394075a13bea007e0ee55a/FLAGdbf3cac44 [2020-10-27 23:04:54,906 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:04:54,907 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c [2020-10-27 23:04:54,922 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29bbe03ae/c5eaffea54394075a13bea007e0ee55a/FLAGdbf3cac44 [2020-10-27 23:04:55,193 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29bbe03ae/c5eaffea54394075a13bea007e0ee55a [2020-10-27 23:04:55,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:04:55,205 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:04:55,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:04:55,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:04:55,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:04:55,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:04:55" (1/1) ... [2020-10-27 23:04:55,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bfac43b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:04:55, skipping insertion in model container [2020-10-27 23:04:55,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:04:55" (1/1) ... [2020-10-27 23:04:55,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:04:55,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:04:55,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:04:55,576 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:04:55,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:04:55,729 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:04:55,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:04:55 WrapperNode [2020-10-27 23:04:55,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:04:55,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:04:55,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:04:55,735 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:04:55,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:04:55" (1/1) ... [2020-10-27 23:04:55,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:04:55" (1/1) ... [2020-10-27 23:04:55,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:04:55" (1/1) ... [2020-10-27 23:04:55,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:04:55" (1/1) ... [2020-10-27 23:04:55,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:04:55" (1/1) ... [2020-10-27 23:04:55,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:04:55" (1/1) ... [2020-10-27 23:04:55,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:04:55" (1/1) ... [2020-10-27 23:04:55,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:04:55,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:04:55,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:04:55,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:04:55,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:04:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:04:55,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:04:55,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:04:55,896 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:04:55,896 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:04:55,897 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 23:04:55,897 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 23:04:55,897 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 23:04:55,898 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-27 23:04:55,898 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-27 23:04:55,898 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 23:04:55,899 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 23:04:55,899 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:04:55,899 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 23:04:55,900 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:04:55,900 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:04:55,901 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:04:55,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:04:55,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:04:55,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:04:55,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 23:04:55,901 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:04:55,902 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:04:55,902 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:04:55,902 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:04:55,902 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:04:55,902 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:04:55,902 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:04:55,902 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:04:55,903 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 23:04:55,903 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:04:55,903 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:04:55,903 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:04:55,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:04:55,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:04:55,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:04:55,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:04:55,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:04:55,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:04:56,884 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:04:56,885 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 23:04:56,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:04:56 BoogieIcfgContainer [2020-10-27 23:04:56,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:04:56,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:04:56,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:04:56,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:04:56,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:04:55" (1/3) ... [2020-10-27 23:04:56,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee4b87e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:04:56, skipping insertion in model container [2020-10-27 23:04:56,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:04:55" (2/3) ... [2020-10-27 23:04:56,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee4b87e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:04:56, skipping insertion in model container [2020-10-27 23:04:56,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:04:56" (3/3) ... [2020-10-27 23:04:56,896 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c [2020-10-27 23:04:56,908 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:04:56,914 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:04:56,927 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:04:56,956 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:04:56,956 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:04:56,956 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:04:56,957 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:04:56,957 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:04:56,957 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:04:56,957 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:04:56,957 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:04:56,979 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2020-10-27 23:04:56,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 23:04:56,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:04:56,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:04:56,991 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:04:56,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:04:56,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1493845296, now seen corresponding path program 1 times [2020-10-27 23:04:57,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:04:57,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624881150] [2020-10-27 23:04:57,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:04:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:57,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:57,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:57,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 23:04:57,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:57,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-10-27 23:04:57,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:57,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:57,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 23:04:57,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:57,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 23:04:58,225 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 23:04:58,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:04:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:58,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:58,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:58,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:04:58,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:58,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 23:04:58,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:58,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:58,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:58,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:58,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:58,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:04:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:58,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:58,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:58,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:04:58,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:58,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:04:58,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:58,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:58,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:58,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:58,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:04:58,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 23:04:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:58,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:58,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:58,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:04:58,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:58,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:04:58,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:58,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:58,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 23:04:58,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:58,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:04:58,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 23:04:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:58,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:58,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:58,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:04:58,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:58,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:04:58,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:58,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:58,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:04:58,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:58,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:58,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 23:04:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:58,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:58,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:58,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:58,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:58,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:04:58,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:58,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:58,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:04:58,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:58,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:58,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 23:04:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:58,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:58,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:58,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:58,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:58,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:04:58,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:58,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:58,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:04:58,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:58,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:58,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 23:04:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:58,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:58,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:58,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:58,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:58,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:04:58,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:58,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:58,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:04:58,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:58,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:04:58,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 23:04:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:58,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:58,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:58,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:58,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:58,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:04:58,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:58,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:58,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:04:58,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:58,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:58,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 23:04:58,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:58,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:58,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:58,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:04:58,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:58,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:04:58,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:58,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:58,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:04:58,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:58,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:58,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:04:58,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624881150] [2020-10-27 23:04:58,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:04:58,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 23:04:58,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627432698] [2020-10-27 23:04:58,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 23:04:58,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:04:58,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 23:04:58,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:04:58,652 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 8 states. [2020-10-27 23:05:00,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:05:00,231 INFO L93 Difference]: Finished difference Result 279 states and 417 transitions. [2020-10-27 23:05:00,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 23:05:00,234 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-10-27 23:05:00,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:05:00,246 INFO L225 Difference]: With dead ends: 279 [2020-10-27 23:05:00,246 INFO L226 Difference]: Without dead ends: 162 [2020-10-27 23:05:00,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:05:00,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-27 23:05:00,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 156. [2020-10-27 23:05:00,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-27 23:05:00,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 237 transitions. [2020-10-27 23:05:00,326 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 237 transitions. Word has length 69 [2020-10-27 23:05:00,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:05:00,327 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 237 transitions. [2020-10-27 23:05:00,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 23:05:00,327 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 237 transitions. [2020-10-27 23:05:00,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 23:05:00,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:05:00,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:05:00,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:05:00,339 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:05:00,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:05:00,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1925102994, now seen corresponding path program 1 times [2020-10-27 23:05:00,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:05:00,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948836257] [2020-10-27 23:05:00,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:05:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:00,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:01,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:01,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 23:05:01,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:01,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 751 [2020-10-27 23:05:01,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:01,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 23:05:01,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 23:05:01,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 23:05:01,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:01,409 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 23:05:01,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:05:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:01,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:01,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:01,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:05:01,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:01,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 23:05:01,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:01,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:01,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:01,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:01,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:01,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:05:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:01,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:01,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:01,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:05:01,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:01,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:05:01,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:05:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:05:01,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:01,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 23:05:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:01,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:01,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:01,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:05:01,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:01,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:05:01,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:01,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:05:01,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 23:05:01,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:05:01,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:01,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 23:05:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:01,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:01,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:01,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:01,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:01,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:05:01,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:01,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:01,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:05:01,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:01,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:01,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 23:05:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:01,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:01,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:01,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:05:01,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:01,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:05:01,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:01,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:01,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:05:01,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:01,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:01,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 23:05:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:01,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:01,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:01,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:05:01,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:01,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:05:01,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:01,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:01,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:05:01,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:01,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:01,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 23:05:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:01,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:01,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:01,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:05:01,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:01,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:05:01,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:01,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:01,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:05:01,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:01,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:01,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 23:05:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:01,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:01,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:01,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:05:01,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:01,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:05:01,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:01,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:01,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:05:01,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:01,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:01,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 23:05:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:01,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:01,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:01,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:05:01,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:01,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:05:01,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:01,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:01,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:05:01,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:01,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:01,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:05:01,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948836257] [2020-10-27 23:05:01,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:05:01,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 23:05:01,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363069607] [2020-10-27 23:05:01,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 23:05:01,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:05:01,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 23:05:01,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-27 23:05:01,774 INFO L87 Difference]: Start difference. First operand 156 states and 237 transitions. Second operand 14 states. [2020-10-27 23:05:02,083 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 23:05:02,406 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-27 23:05:02,774 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:05:03,068 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 23:05:05,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:05:05,002 INFO L93 Difference]: Finished difference Result 274 states and 405 transitions. [2020-10-27 23:05:05,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 23:05:05,002 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 69 [2020-10-27 23:05:05,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:05:05,009 INFO L225 Difference]: With dead ends: 274 [2020-10-27 23:05:05,009 INFO L226 Difference]: Without dead ends: 162 [2020-10-27 23:05:05,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-27 23:05:05,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-27 23:05:05,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 156. [2020-10-27 23:05:05,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-27 23:05:05,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 205 transitions. [2020-10-27 23:05:05,054 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 205 transitions. Word has length 69 [2020-10-27 23:05:05,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:05:05,054 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 205 transitions. [2020-10-27 23:05:05,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 23:05:05,054 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 205 transitions. [2020-10-27 23:05:05,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 23:05:05,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:05:05,057 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] [2020-10-27 23:05:05,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:05:05,058 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:05:05,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:05:05,058 INFO L82 PathProgramCache]: Analyzing trace with hash -771558967, now seen corresponding path program 1 times [2020-10-27 23:05:05,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:05:05,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184352936] [2020-10-27 23:05:05,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:05:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:05,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:05,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:05,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:05,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:07,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:10,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:10,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 23:05:10,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:05:10,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 23:05:10,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:10,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:05:10,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 23:05:10,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 23:05:10,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:05:10,476 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 23:05:10,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:05:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:10,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:10,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:10,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:05:10,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:10,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 23:05:10,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:10,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:10,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:10,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:10,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:10,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:05:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:10,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:10,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:10,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 23:05:10,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:10,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 23:05:10,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:10,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:10,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:10,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 23:05:10,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:10,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 23:05:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:10,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:10,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:10,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:05:10,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:10,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:05:10,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:10,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:10,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:10,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:05:10,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:10,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 23:05:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:10,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:10,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:10,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:10,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:10,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:05:10,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:10,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:10,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:10,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:05:10,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:10,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 23:05:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:10,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:10,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:10,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:05:10,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:10,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:05:10,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:10,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:10,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:10,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:05:10,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:10,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 23:05:10,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:10,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:10,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:10,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:05:10,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:10,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:05:10,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:10,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:10,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:10,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:05:10,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:10,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 23:05:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:10,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:10,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:10,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:05:10,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:10,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:05:10,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:10,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:10,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:10,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:05:10,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:10,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 23:05:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:10,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:10,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:10,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:05:10,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:10,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:05:10,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:10,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:05:10,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:05:10,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:05:10,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:10,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 23:05:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:10,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:10,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:10,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:05:10,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:10,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:05:10,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:10,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:10,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:05:10,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:10,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:10,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:05:10,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184352936] [2020-10-27 23:05:10,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:05:10,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:05:10,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850380634] [2020-10-27 23:05:10,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:05:10,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:05:10,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:05:10,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:05:10,813 INFO L87 Difference]: Start difference. First operand 156 states and 205 transitions. Second operand 11 states. [2020-10-27 23:05:11,084 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 23:05:13,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:05:13,475 INFO L93 Difference]: Finished difference Result 367 states and 508 transitions. [2020-10-27 23:05:13,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 23:05:13,478 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 100 [2020-10-27 23:05:13,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:05:13,483 INFO L225 Difference]: With dead ends: 367 [2020-10-27 23:05:13,483 INFO L226 Difference]: Without dead ends: 261 [2020-10-27 23:05:13,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-10-27 23:05:13,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-27 23:05:13,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 247. [2020-10-27 23:05:13,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-10-27 23:05:13,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 338 transitions. [2020-10-27 23:05:13,517 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 338 transitions. Word has length 100 [2020-10-27 23:05:13,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:05:13,518 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 338 transitions. [2020-10-27 23:05:13,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:05:13,518 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 338 transitions. [2020-10-27 23:05:13,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 23:05:13,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:05:13,520 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] [2020-10-27 23:05:13,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:05:13,520 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:05:13,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:05:13,521 INFO L82 PathProgramCache]: Analyzing trace with hash 505142832, now seen corresponding path program 1 times [2020-10-27 23:05:13,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:05:13,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099986709] [2020-10-27 23:05:13,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:05:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:13,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:13,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:13,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:14,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:18,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:18,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 23:05:18,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 23:05:18,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 23:05:18,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:18,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:05:18,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 23:05:18,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 23:05:18,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:18,882 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 23:05:18,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:05:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:18,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:18,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:18,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:05:18,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:18,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:05:18,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:18,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:18,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:18,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:18,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:18,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:05:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:18,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:18,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:18,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 23:05:18,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:18,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 23:05:18,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:18,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:18,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:18,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 23:05:18,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:18,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 23:05:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:18,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:18,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:18,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:05:18,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:18,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:05:18,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:18,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:18,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:18,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:05:18,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:18,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 23:05:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:18,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:18,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:18,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:18,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:18,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:05:18,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:18,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:18,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:18,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:05:18,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:19,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 23:05:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:19,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:19,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:19,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:05:19,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:19,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:05:19,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:19,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:19,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:19,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:05:19,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:05:19,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 23:05:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:19,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:19,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:19,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:05:19,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:19,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:05:19,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:19,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:19,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:19,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:05:19,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:19,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 23:05:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:19,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:19,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:19,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:05:19,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:19,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:05:19,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:19,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:05:19,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:05:19,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:05:19,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:05:19,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 23:05:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:19,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:19,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:19,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:19,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:19,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:05:19,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:19,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:19,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:05:19,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:19,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:19,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 23:05:19,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:19,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:19,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:19,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:05:19,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:19,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:05:19,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:19,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:19,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:05:19,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:19,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:19,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:05:19,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099986709] [2020-10-27 23:05:19,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:05:19,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:05:19,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922937416] [2020-10-27 23:05:19,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:05:19,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:05:19,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:05:19,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:05:19,238 INFO L87 Difference]: Start difference. First operand 247 states and 338 transitions. Second operand 11 states. [2020-10-27 23:05:19,518 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 23:05:20,686 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-27 23:05:22,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:05:22,242 INFO L93 Difference]: Finished difference Result 637 states and 898 transitions. [2020-10-27 23:05:22,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 23:05:22,244 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 101 [2020-10-27 23:05:22,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:05:22,248 INFO L225 Difference]: With dead ends: 637 [2020-10-27 23:05:22,248 INFO L226 Difference]: Without dead ends: 440 [2020-10-27 23:05:22,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-10-27 23:05:22,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2020-10-27 23:05:22,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 417. [2020-10-27 23:05:22,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-10-27 23:05:22,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 584 transitions. [2020-10-27 23:05:22,299 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 584 transitions. Word has length 101 [2020-10-27 23:05:22,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:05:22,300 INFO L481 AbstractCegarLoop]: Abstraction has 417 states and 584 transitions. [2020-10-27 23:05:22,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:05:22,300 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 584 transitions. [2020-10-27 23:05:22,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-27 23:05:22,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:05:22,302 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] [2020-10-27 23:05:22,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:05:22,302 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:05:22,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:05:22,303 INFO L82 PathProgramCache]: Analyzing trace with hash 658858695, now seen corresponding path program 1 times [2020-10-27 23:05:22,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:05:22,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137025621] [2020-10-27 23:05:22,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:05:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:22,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:22,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:22,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:25,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:25,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 23:05:25,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 23:05:25,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3247 [2020-10-27 23:05:25,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:25,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:05:25,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 23:05:25,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 23:05:25,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:25,809 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 23:05:25,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:05:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:25,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:25,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:25,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:05:25,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:25,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:05:25,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:25,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:25,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:05:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:25,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:25,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:25,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 23:05:25,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:25,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:05:25,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:25,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:25,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:25,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 23:05:25,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:25,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 23:05:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:25,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:25,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:25,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:05:25,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:25,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:05:25,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:25,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:25,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:25,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:05:25,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:25,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 23:05:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:25,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:25,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:25,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:25,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:25,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:05:25,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:25,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:25,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:25,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:05:25,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:25,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 23:05:25,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:25,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:25,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:25,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:05:25,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:25,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:05:25,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:25,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:25,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:25,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:05:25,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:25,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 23:05:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:25,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:25,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:25,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:05:25,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:25,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:05:25,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:25,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:05:25,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:05:25,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:05:25,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:26,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 23:05:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:26,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:26,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:26,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:26,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:26,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:05:26,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:26,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:26,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:05:26,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:26,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:26,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 23:05:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:26,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:26,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:26,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:26,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:26,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:05:26,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:26,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:26,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:05:26,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:26,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:26,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 23:05:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:26,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:26,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:26,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:05:26,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:26,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:05:26,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:26,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:26,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:05:26,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:26,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:26,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:05:26,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137025621] [2020-10-27 23:05:26,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:05:26,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:05:26,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455517602] [2020-10-27 23:05:26,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:05:26,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:05:26,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:05:26,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:05:26,132 INFO L87 Difference]: Start difference. First operand 417 states and 584 transitions. Second operand 11 states. [2020-10-27 23:05:26,410 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 23:05:28,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:05:28,893 INFO L93 Difference]: Finished difference Result 1139 states and 1616 transitions. [2020-10-27 23:05:28,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 23:05:28,900 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2020-10-27 23:05:28,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:05:28,905 INFO L225 Difference]: With dead ends: 1139 [2020-10-27 23:05:28,905 INFO L226 Difference]: Without dead ends: 772 [2020-10-27 23:05:28,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-10-27 23:05:28,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2020-10-27 23:05:28,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 733. [2020-10-27 23:05:28,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-10-27 23:05:29,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1036 transitions. [2020-10-27 23:05:29,008 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1036 transitions. Word has length 102 [2020-10-27 23:05:29,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:05:29,011 INFO L481 AbstractCegarLoop]: Abstraction has 733 states and 1036 transitions. [2020-10-27 23:05:29,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:05:29,011 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1036 transitions. [2020-10-27 23:05:29,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 23:05:29,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:05:29,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:05:29,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:05:29,012 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:05:29,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:05:29,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1750626152, now seen corresponding path program 1 times [2020-10-27 23:05:29,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:05:29,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892696143] [2020-10-27 23:05:29,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:05:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:29,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:29,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:30,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:30,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 23:05:30,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 23:05:30,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1938 [2020-10-27 23:05:30,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:30,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:05:30,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 23:05:30,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 23:05:30,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:31,228 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 23:05:31,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:05:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:31,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:31,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:31,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:05:31,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:31,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:05:31,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:31,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:31,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:31,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:31,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:31,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:05:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:31,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:31,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:31,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 23:05:31,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:31,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:05:31,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:31,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:31,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:31,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:05:31,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:31,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 23:05:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:31,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:31,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:31,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:05:31,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:31,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:05:31,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:31,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:31,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:31,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:05:31,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:31,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 23:05:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:31,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:31,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:31,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:31,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:31,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:05:31,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:31,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:31,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:31,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:05:31,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:31,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 23:05:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:31,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:31,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:31,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:05:31,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:31,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:05:31,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:31,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:05:31,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:05:31,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:05:31,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:31,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 23:05:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:31,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:31,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:31,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:31,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:31,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:05:31,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:31,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:31,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:05:31,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:31,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:31,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 23:05:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:31,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:31,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:31,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:31,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:31,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:05:31,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:31,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:31,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:05:31,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:31,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:31,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 23:05:31,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:31,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:31,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:31,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:31,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:31,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:05:31,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:31,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:31,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:05:31,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:31,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:31,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 23:05:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:31,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:31,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:31,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:05:31,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:31,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:05:31,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:31,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:31,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:05:31,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:31,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:31,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:05:31,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892696143] [2020-10-27 23:05:31,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:05:31,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:05:31,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611182540] [2020-10-27 23:05:31,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:05:31,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:05:31,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:05:31,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:05:31,588 INFO L87 Difference]: Start difference. First operand 733 states and 1036 transitions. Second operand 11 states. [2020-10-27 23:05:31,901 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 23:05:32,610 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-27 23:05:34,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:05:34,664 INFO L93 Difference]: Finished difference Result 2067 states and 2928 transitions. [2020-10-27 23:05:34,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 23:05:34,665 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 103 [2020-10-27 23:05:34,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:05:34,675 INFO L225 Difference]: With dead ends: 2067 [2020-10-27 23:05:34,675 INFO L226 Difference]: Without dead ends: 1384 [2020-10-27 23:05:34,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-10-27 23:05:34,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2020-10-27 23:05:34,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1317. [2020-10-27 23:05:34,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1317 states. [2020-10-27 23:05:34,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1860 transitions. [2020-10-27 23:05:34,798 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1860 transitions. Word has length 103 [2020-10-27 23:05:34,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:05:34,798 INFO L481 AbstractCegarLoop]: Abstraction has 1317 states and 1860 transitions. [2020-10-27 23:05:34,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:05:34,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1860 transitions. [2020-10-27 23:05:34,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 23:05:34,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:05:34,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:05:34,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:05:34,800 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:05:34,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:05:34,801 INFO L82 PathProgramCache]: Analyzing trace with hash -708239357, now seen corresponding path program 1 times [2020-10-27 23:05:34,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:05:34,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448301266] [2020-10-27 23:05:34,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:05:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:34,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:34,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:38,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:38,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 23:05:38,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 23:05:38,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3627 [2020-10-27 23:05:38,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:38,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 23:05:38,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:05:38,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 23:05:38,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:38,804 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 23:05:38,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:05:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:38,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:38,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:38,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:05:38,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:38,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:05:38,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:38,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:38,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:38,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:38,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:38,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:05:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:38,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:38,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:38,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 23:05:38,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:38,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 23:05:38,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:38,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 23:05:38,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:38,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 23:05:38,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:39,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 23:05:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:39,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:39,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:39,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:05:39,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:39,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:05:39,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:39,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:39,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:39,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:05:39,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:39,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 23:05:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:39,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:39,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:39,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:39,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:39,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 23:05:39,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:39,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:05:39,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:05:39,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:05:39,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:39,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 23:05:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:39,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:39,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:39,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:39,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:39,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:05:39,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:39,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:05:39,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:05:39,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:05:39,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:39,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 23:05:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:39,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:39,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:39,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:39,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:39,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:05:39,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:39,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:05:39,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:05:39,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:05:39,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:39,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 23:05:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:39,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:39,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:39,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:39,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:39,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 23:05:39,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:39,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:05:39,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:05:39,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:05:39,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:39,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 23:05:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:39,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:39,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:39,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:39,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:39,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:05:39,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:39,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:05:39,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:05:39,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:05:39,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:39,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 23:05:39,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:39,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:39,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:39,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:05:39,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:39,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:05:39,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:39,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:39,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 23:05:39,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 23:05:39,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:39,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:05:39,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448301266] [2020-10-27 23:05:39,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:05:39,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-27 23:05:39,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991370869] [2020-10-27 23:05:39,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 23:05:39,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:05:39,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 23:05:39,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2020-10-27 23:05:39,495 INFO L87 Difference]: Start difference. First operand 1317 states and 1860 transitions. Second operand 19 states. [2020-10-27 23:05:39,827 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:05:40,088 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 23:05:40,374 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 23:05:40,669 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 23:05:40,968 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-27 23:05:43,118 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 23:05:47,568 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:05:47,838 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:05:48,117 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-27 23:05:48,407 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 23:05:56,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:05:56,993 INFO L93 Difference]: Finished difference Result 16302 states and 23194 transitions. [2020-10-27 23:05:56,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2020-10-27 23:05:56,994 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 104 [2020-10-27 23:05:56,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:05:57,082 INFO L225 Difference]: With dead ends: 16302 [2020-10-27 23:05:57,082 INFO L226 Difference]: Without dead ends: 15035 [2020-10-27 23:05:57,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3962 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=2082, Invalid=9260, Unknown=0, NotChecked=0, Total=11342 [2020-10-27 23:05:57,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15035 states. [2020-10-27 23:05:58,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15035 to 14301. [2020-10-27 23:05:58,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14301 states. [2020-10-27 23:05:58,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14301 states to 14301 states and 20452 transitions. [2020-10-27 23:05:58,383 INFO L78 Accepts]: Start accepts. Automaton has 14301 states and 20452 transitions. Word has length 104 [2020-10-27 23:05:58,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:05:58,384 INFO L481 AbstractCegarLoop]: Abstraction has 14301 states and 20452 transitions. [2020-10-27 23:05:58,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 23:05:58,384 INFO L276 IsEmpty]: Start isEmpty. Operand 14301 states and 20452 transitions. [2020-10-27 23:05:58,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-27 23:05:58,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:05:58,385 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] [2020-10-27 23:05:58,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:05:58,386 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:05:58,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:05:58,386 INFO L82 PathProgramCache]: Analyzing trace with hash -191104239, now seen corresponding path program 1 times [2020-10-27 23:05:58,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:05:58,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208096376] [2020-10-27 23:05:58,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:05:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:58,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:58,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:00,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:00,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 23:06:00,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 23:06:00,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2438 [2020-10-27 23:06:00,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:00,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 23:06:00,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-27 23:06:00,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 23:06:00,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:01,222 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 23:06:01,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:06:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:01,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:01,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:01,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:06:01,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:01,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:06:01,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:01,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:06:01,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:01,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:06:01,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:01,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:06:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:01,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:01,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:01,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 23:06:01,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:01,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:06:01,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:01,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:06:01,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:01,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:06:01,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:01,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 23:06:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:01,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:01,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:01,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:06:01,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:01,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 23:06:01,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:01,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:06:01,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:01,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:06:01,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:01,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 23:06:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:01,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:01,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:01,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:06:01,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:01,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:06:01,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:01,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:06:01,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:01,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:06:01,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:01,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 23:06:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:01,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:01,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:01,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:06:01,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:01,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:06:01,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:01,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:06:01,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:01,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:06:01,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:01,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 23:06:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:01,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:01,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:01,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:06:01,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:01,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:06:01,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:01,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:06:01,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:01,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:06:01,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:01,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 23:06:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:01,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:01,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:01,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:06:01,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:01,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:06:01,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:01,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:06:01,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:01,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:06:01,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:01,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 23:06:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:01,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:01,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:01,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:06:01,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:01,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:06:01,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:01,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:06:01,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:01,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:06:01,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:01,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 23:06:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:01,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:01,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:01,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:06:01,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:01,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:06:01,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:01,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:06:01,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:01,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 23:06:01,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:01,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:06:01,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208096376] [2020-10-27 23:06:01,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:06:01,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 23:06:01,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126996413] [2020-10-27 23:06:01,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 23:06:01,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:06:01,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 23:06:01,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-27 23:06:01,496 INFO L87 Difference]: Start difference. First operand 14301 states and 20452 transitions. Second operand 14 states. [2020-10-27 23:06:03,221 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 23:06:03,480 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-27 23:06:03,801 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 23:06:04,116 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-27 23:06:05,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:06:05,565 INFO L93 Difference]: Finished difference Result 16912 states and 24390 transitions. [2020-10-27 23:06:05,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 23:06:05,566 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 105 [2020-10-27 23:06:05,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:06:05,656 INFO L225 Difference]: With dead ends: 16912 [2020-10-27 23:06:05,656 INFO L226 Difference]: Without dead ends: 16909 [2020-10-27 23:06:05,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2020-10-27 23:06:05,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16909 states. [2020-10-27 23:06:07,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16909 to 15165. [2020-10-27 23:06:07,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15165 states. [2020-10-27 23:06:07,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15165 states to 15165 states and 21316 transitions. [2020-10-27 23:06:07,151 INFO L78 Accepts]: Start accepts. Automaton has 15165 states and 21316 transitions. Word has length 105 [2020-10-27 23:06:07,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:06:07,152 INFO L481 AbstractCegarLoop]: Abstraction has 15165 states and 21316 transitions. [2020-10-27 23:06:07,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 23:06:07,152 INFO L276 IsEmpty]: Start isEmpty. Operand 15165 states and 21316 transitions. [2020-10-27 23:06:07,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 23:06:07,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:06:07,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:06:07,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:06:07,154 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:06:07,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:06:07,155 INFO L82 PathProgramCache]: Analyzing trace with hash 395121387, now seen corresponding path program 1 times [2020-10-27 23:06:07,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:06:07,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37749118] [2020-10-27 23:06:07,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:06:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:07,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:07,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:08,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:08,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 23:06:08,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 23:06:08,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1262 [2020-10-27 23:06:08,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:08,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 23:06:08,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 23:06:08,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 23:06:08,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 23:06:08,742 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 23:06:08,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:06:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:08,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:08,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:08,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:06:08,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:08,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:06:08,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:08,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:06:08,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:08,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:06:08,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:08,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:06:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:08,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:08,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:08,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 23:06:08,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:08,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:06:08,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:08,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:08,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:08,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 23:06:08,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:08,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 23:06:08,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:08,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:08,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:08,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:06:08,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:08,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:06:08,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:08,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:08,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:08,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:06:08,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:08,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 23:06:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:08,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:08,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:08,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:06:08,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:08,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:06:08,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:08,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:06:08,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:08,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:06:08,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:08,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 23:06:08,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:08,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:08,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:08,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:06:08,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:08,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:06:08,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:08,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:06:08,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:08,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:06:08,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:08,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 23:06:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:08,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:08,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:08,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:06:08,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:08,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:06:08,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:08,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:06:08,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:08,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:06:08,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:09,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 23:06:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:09,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:09,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:09,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:06:09,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:09,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:06:09,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:09,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:06:09,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:09,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:06:09,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:09,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 23:06:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:09,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:09,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:09,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:06:09,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:09,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:06:09,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:09,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:09,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 23:06:09,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:06:09,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:09,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 23:06:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:09,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:09,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:09,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:06:09,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:09,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:06:09,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:09,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:06:09,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:06:09,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:06:09,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:09,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:06:09,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37749118] [2020-10-27 23:06:09,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:06:09,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-27 23:06:09,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224403163] [2020-10-27 23:06:09,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 23:06:09,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:06:09,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 23:06:09,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-10-27 23:06:09,227 INFO L87 Difference]: Start difference. First operand 15165 states and 21316 transitions. Second operand 18 states. [2020-10-27 23:06:09,599 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 23:06:09,920 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 23:06:10,800 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 23:06:11,586 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 23:06:11,891 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 23:06:12,177 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 23:06:13,229 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:06:13,564 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 23:06:13,884 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 23:06:14,249 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 23:06:14,553 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 23:06:14,869 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 23:06:15,202 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 23:06:17,068 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:06:17,415 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:06:17,714 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 23:06:18,066 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:06:18,354 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 23:06:18,712 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:06:19,032 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 23:06:19,405 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 23:06:19,723 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 23:06:20,059 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 23:06:20,369 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 23:06:20,953 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 23:06:21,237 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 23:06:21,794 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 23:06:22,078 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 23:06:23,407 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-27 23:06:25,123 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 23:06:25,449 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:06:25,779 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 23:06:26,105 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:06:26,419 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 23:06:26,748 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:06:27,068 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 23:06:27,395 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 23:06:27,729 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 23:06:28,082 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 23:06:28,394 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 23:06:28,717 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 23:06:29,029 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 23:06:29,346 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 23:06:29,806 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 23:06:30,109 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 23:06:30,431 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 23:06:30,740 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 23:06:31,044 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 23:06:31,373 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 23:06:31,943 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 23:06:32,284 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 23:06:32,592 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 23:06:32,889 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 23:06:33,198 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 23:06:33,508 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 23:06:34,587 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 23:06:34,884 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 23:06:35,917 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 23:06:36,214 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-27 23:06:36,784 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-27 23:06:51,494 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-27 23:06:51,783 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 23:06:52,601 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-27 23:06:58,589 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 23:06:58,749 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 23:07:05,101 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 23:07:05,262 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 23:07:05,420 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 23:07:06,019 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-27 23:07:06,258 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-27 23:07:08,564 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-27 23:07:34,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:07:34,086 INFO L93 Difference]: Finished difference Result 370604 states and 538470 transitions. [2020-10-27 23:07:34,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 303 states. [2020-10-27 23:07:34,087 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 106 [2020-10-27 23:07:34,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:07:36,037 INFO L225 Difference]: With dead ends: 370604 [2020-10-27 23:07:36,037 INFO L226 Difference]: Without dead ends: 355489 [2020-10-27 23:07:36,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 311 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42599 ImplicationChecksByTransitivity, 42.2s TimeCoverageRelationStatistics Valid=8249, Invalid=89407, Unknown=0, NotChecked=0, Total=97656 [2020-10-27 23:07:36,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355489 states. [2020-10-27 23:08:00,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355489 to 344305. [2020-10-27 23:08:00,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344305 states. [2020-10-27 23:08:02,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344305 states to 344305 states and 460354 transitions. [2020-10-27 23:08:02,708 INFO L78 Accepts]: Start accepts. Automaton has 344305 states and 460354 transitions. Word has length 106 [2020-10-27 23:08:02,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:08:02,708 INFO L481 AbstractCegarLoop]: Abstraction has 344305 states and 460354 transitions. [2020-10-27 23:08:02,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 23:08:02,708 INFO L276 IsEmpty]: Start isEmpty. Operand 344305 states and 460354 transitions. [2020-10-27 23:08:02,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-27 23:08:02,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:08:02,734 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] [2020-10-27 23:08:02,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:08:02,735 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:08:02,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:08:02,735 INFO L82 PathProgramCache]: Analyzing trace with hash -561038865, now seen corresponding path program 1 times [2020-10-27 23:08:02,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:08:02,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834509248] [2020-10-27 23:08:02,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:08:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:02,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:02,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:03,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:03,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 23:08:03,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 23:08:03,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 927 [2020-10-27 23:08:03,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:03,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:08:03,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 23:08:03,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 23:08:03,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:04,058 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 23:08:04,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:08:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:04,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:04,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:04,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:08:04,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:04,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:08:04,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:04,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:04,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:08:04,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:04,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:04,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:08:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:04,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:04,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:04,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 23:08:04,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:04,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:08:04,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:04,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:08:04,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:08:04,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:08:04,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:04,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 23:08:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:04,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:04,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:04,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:08:04,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:04,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:08:04,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:04,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:08:04,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:08:04,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:08:04,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:04,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 23:08:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:04,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:04,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:04,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 23:08:04,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:04,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:08:04,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:04,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:08:04,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:08:04,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 23:08:04,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:04,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 23:08:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:04,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:04,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:04,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:08:04,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:04,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:08:04,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:04,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:08:04,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:04,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:04,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 23:08:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:04,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:04,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:04,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:08:04,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:04,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:08:04,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:04,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:04,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:08:04,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:04,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:04,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 23:08:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:04,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:04,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:04,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:08:04,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:04,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:08:04,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:04,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:04,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:08:04,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:04,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:04,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 23:08:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:04,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:04,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:04,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:08:04,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:04,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:08:04,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:04,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:04,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:08:04,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:04,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:04,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 23:08:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:08:04,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:08:04,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:08:04,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:08:04,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:08:04,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:08:04,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:08:04,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:08:04,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:08:04,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:08:04,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:08:04,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:08:04,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834509248] [2020-10-27 23:08:04,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:08:04,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:08:04,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129073868] [2020-10-27 23:08:04,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:08:04,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:08:04,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:08:04,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:08:04,379 INFO L87 Difference]: Start difference. First operand 344305 states and 460354 transitions. Second operand 11 states. [2020-10-27 23:08:04,803 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 23:08:06,679 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 171