/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:20:07,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:20:07,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:20:07,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:20:07,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:20:07,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:20:07,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:20:07,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:20:07,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:20:07,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:20:07,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:20:07,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:20:07,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:20:07,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:20:07,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:20:07,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:20:07,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:20:07,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:20:07,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:20:07,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:20:07,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:20:07,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:20:07,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:20:07,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:20:07,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:20:07,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:20:07,895 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:20:07,897 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:20:07,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:20:07,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:20:07,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:20:07,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:20:07,902 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:20:07,903 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:20:07,904 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:20:07,905 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:20:07,906 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:20:07,906 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:20:07,906 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:20:07,907 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:20:07,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:20:07,912 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 05:20:07,967 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:20:07,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:20:07,971 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:20:07,971 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:20:07,971 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:20:07,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:20:07,972 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:20:07,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:20:07,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:20:07,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:20:07,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:20:07,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:20:07,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:20:07,974 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:20:07,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:20:07,974 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:20:07,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:20:07,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:20:07,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:20:07,975 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:20:07,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:20:07,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:20:07,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:20:07,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:20:07,976 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:20:07,977 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:20:07,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:20:07,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:20:07,977 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:20:07,977 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:20:08,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:20:08,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:20:08,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:20:08,448 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:20:08,449 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:20:08,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 05:20:08,539 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06482b3f6/125ed8bf400e4560aa254807033271d6/FLAGdea234771 [2020-10-27 05:20:09,238 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:20:09,239 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 05:20:09,250 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06482b3f6/125ed8bf400e4560aa254807033271d6/FLAGdea234771 [2020-10-27 05:20:09,266 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06482b3f6/125ed8bf400e4560aa254807033271d6 [2020-10-27 05:20:09,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:20:09,276 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:20:09,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:20:09,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:20:09,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:20:09,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:20:09" (1/1) ... [2020-10-27 05:20:09,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b250cc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:20:09, skipping insertion in model container [2020-10-27 05:20:09,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:20:09" (1/1) ... [2020-10-27 05:20:09,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:20:09,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:20:09,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:20:09,666 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:20:09,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:20:09,761 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:20:09,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:20:09 WrapperNode [2020-10-27 05:20:09,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:20:09,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:20:09,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:20:09,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:20:09,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:20:09" (1/1) ... [2020-10-27 05:20:09,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:20:09" (1/1) ... [2020-10-27 05:20:09,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:20:09" (1/1) ... [2020-10-27 05:20:09,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:20:09" (1/1) ... [2020-10-27 05:20:09,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:20:09" (1/1) ... [2020-10-27 05:20:09,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:20:09" (1/1) ... [2020-10-27 05:20:09,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:20:09" (1/1) ... [2020-10-27 05:20:09,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:20:09,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:20:09,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:20:09,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:20:09,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:20:09" (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 05:20:09,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:20:09,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:20:09,922 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:20:09,922 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:20:09,923 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:20:09,923 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:20:09,923 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:20:09,923 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:20:09,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:20:09,924 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:20:09,924 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:20:09,924 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:20:09,924 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:20:09,924 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:20:09,925 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:20:09,925 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:20:09,925 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:20:09,925 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:20:09,925 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:20:09,926 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 05:20:09,926 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:20:09,926 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:20:09,926 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:20:09,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:20:09,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:20:09,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:20:09,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:20:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:20:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:20:10,907 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:20:10,907 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:20:10,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:20:10 BoogieIcfgContainer [2020-10-27 05:20:10,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:20:10,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:20:10,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:20:10,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:20:10,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:20:09" (1/3) ... [2020-10-27 05:20:10,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bf2e600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:20:10, skipping insertion in model container [2020-10-27 05:20:10,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:20:09" (2/3) ... [2020-10-27 05:20:10,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bf2e600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:20:10, skipping insertion in model container [2020-10-27 05:20:10,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:20:10" (3/3) ... [2020-10-27 05:20:10,919 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 05:20:10,943 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:20:10,948 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:20:10,962 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:20:10,989 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:20:10,990 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:20:10,990 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:20:10,990 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:20:10,990 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:20:10,990 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:20:10,991 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:20:10,991 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:20:11,010 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states. [2020-10-27 05:20:11,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 05:20:11,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:20:11,020 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] [2020-10-27 05:20:11,021 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:20:11,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:20:11,027 INFO L82 PathProgramCache]: Analyzing trace with hash -593336161, now seen corresponding path program 1 times [2020-10-27 05:20:11,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:20:11,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854138535] [2020-10-27 05:20:11,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:20:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:11,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:11,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:11,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:11,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:12,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:13,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:16,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:16,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 05:20:16,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:20:16,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 05:20:16,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:16,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:20:16,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 05:20:16,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 05:20:16,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:20:16,936 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 05:20:16,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:20:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:16,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:16,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:16,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:20:16,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:20:16,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 05:20:16,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:16,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:20:16,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:20:16,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:20:16,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:17,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:20:17,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854138535] [2020-10-27 05:20:17,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:20:17,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:20:17,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307008214] [2020-10-27 05:20:17,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:20:17,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:20:17,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:20:17,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:20:17,083 INFO L87 Difference]: Start difference. First operand 106 states. Second operand 8 states. [2020-10-27 05:20:17,713 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-27 05:20:19,374 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-27 05:20:19,927 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-27 05:20:20,475 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 05:20:20,987 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-27 05:20:21,515 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 05:20:21,990 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-27 05:20:22,531 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-27 05:20:23,039 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 05:20:23,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:20:23,220 INFO L93 Difference]: Finished difference Result 756 states and 1194 transitions. [2020-10-27 05:20:23,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 05:20:23,226 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 64 [2020-10-27 05:20:23,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:20:23,247 INFO L225 Difference]: With dead ends: 756 [2020-10-27 05:20:23,247 INFO L226 Difference]: Without dead ends: 648 [2020-10-27 05:20:23,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2020-10-27 05:20:23,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-10-27 05:20:23,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 157. [2020-10-27 05:20:23,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-27 05:20:23,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 226 transitions. [2020-10-27 05:20:23,336 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 226 transitions. Word has length 64 [2020-10-27 05:20:23,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:20:23,337 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 226 transitions. [2020-10-27 05:20:23,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:20:23,337 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 226 transitions. [2020-10-27 05:20:23,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 05:20:23,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:20:23,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:20:23,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:20:23,342 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:20:23,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:20:23,342 INFO L82 PathProgramCache]: Analyzing trace with hash -12511546, now seen corresponding path program 1 times [2020-10-27 05:20:23,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:20:23,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80859514] [2020-10-27 05:20:23,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:20:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:23,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:23,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:23,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:23,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:23,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:24,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:25,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:27,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:28,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:28,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 05:20:28,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:20:28,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 05:20:28,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:28,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:20:28,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:20:28,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 05:20:28,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:29,051 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 05:20:29,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:20:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:29,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:29,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:29,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:20:29,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:20:29,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 05:20:29,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:29,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:20:29,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:20:29,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:20:29,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:29,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:20:29,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80859514] [2020-10-27 05:20:29,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:20:29,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:20:29,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109113465] [2020-10-27 05:20:29,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:20:29,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:20:29,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:20:29,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:20:29,136 INFO L87 Difference]: Start difference. First operand 157 states and 226 transitions. Second operand 7 states. [2020-10-27 05:20:29,622 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 05:20:30,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:20:30,562 INFO L93 Difference]: Finished difference Result 466 states and 714 transitions. [2020-10-27 05:20:30,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:20:30,563 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2020-10-27 05:20:30,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:20:30,568 INFO L225 Difference]: With dead ends: 466 [2020-10-27 05:20:30,569 INFO L226 Difference]: Without dead ends: 347 [2020-10-27 05:20:30,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:20:30,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2020-10-27 05:20:30,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 160. [2020-10-27 05:20:30,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-27 05:20:30,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 230 transitions. [2020-10-27 05:20:30,624 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 230 transitions. Word has length 66 [2020-10-27 05:20:30,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:20:30,625 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 230 transitions. [2020-10-27 05:20:30,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:20:30,625 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 230 transitions. [2020-10-27 05:20:30,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 05:20:30,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:20:30,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:20:30,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:20:30,637 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:20:30,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:20:30,640 INFO L82 PathProgramCache]: Analyzing trace with hash 786850624, now seen corresponding path program 1 times [2020-10-27 05:20:30,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:20:30,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784633470] [2020-10-27 05:20:30,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:20:30,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:30,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:30,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:30,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:30,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:30,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:31,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:31,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:34,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:35,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:35,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 05:20:35,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:20:35,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 05:20:35,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:35,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:20:35,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:20:35,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 05:20:35,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:36,308 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 05:20:36,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:20:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:36,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:36,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:36,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:20:36,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:20:36,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 05:20:36,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:36,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:20:36,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:20:36,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:20:36,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:36,381 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 05:20:36,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784633470] [2020-10-27 05:20:36,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:20:36,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:20:36,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788095891] [2020-10-27 05:20:36,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:20:36,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:20:36,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:20:36,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:20:36,385 INFO L87 Difference]: Start difference. First operand 160 states and 230 transitions. Second operand 7 states. [2020-10-27 05:20:36,900 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 05:20:37,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:20:37,822 INFO L93 Difference]: Finished difference Result 454 states and 693 transitions. [2020-10-27 05:20:37,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:20:37,823 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2020-10-27 05:20:37,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:20:37,828 INFO L225 Difference]: With dead ends: 454 [2020-10-27 05:20:37,828 INFO L226 Difference]: Without dead ends: 335 [2020-10-27 05:20:37,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:20:37,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-10-27 05:20:37,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 168. [2020-10-27 05:20:37,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-27 05:20:37,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 241 transitions. [2020-10-27 05:20:37,872 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 241 transitions. Word has length 66 [2020-10-27 05:20:37,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:20:37,873 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 241 transitions. [2020-10-27 05:20:37,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:20:37,874 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 241 transitions. [2020-10-27 05:20:37,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 05:20:37,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:20:37,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:20:37,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:20:37,877 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:20:37,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:20:37,885 INFO L82 PathProgramCache]: Analyzing trace with hash -660096082, now seen corresponding path program 1 times [2020-10-27 05:20:37,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:20:37,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761141486] [2020-10-27 05:20:37,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:20:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:37,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:37,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:37,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:38,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:38,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:38,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:38,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:40,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:42,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:42,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 05:20:42,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:20:42,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 05:20:42,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:42,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:20:42,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:20:42,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 05:20:42,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:43,542 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 05:20:43,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:20:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:43,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:43,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:43,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:20:43,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:20:43,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 05:20:43,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:43,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:20:43,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:20:43,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:20:43,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:43,602 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 05:20:43,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761141486] [2020-10-27 05:20:43,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:20:43,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:20:43,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036522482] [2020-10-27 05:20:43,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:20:43,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:20:43,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:20:43,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:20:43,605 INFO L87 Difference]: Start difference. First operand 168 states and 241 transitions. Second operand 7 states. [2020-10-27 05:20:44,115 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 05:20:45,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:20:45,106 INFO L93 Difference]: Finished difference Result 440 states and 668 transitions. [2020-10-27 05:20:45,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:20:45,106 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2020-10-27 05:20:45,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:20:45,110 INFO L225 Difference]: With dead ends: 440 [2020-10-27 05:20:45,110 INFO L226 Difference]: Without dead ends: 321 [2020-10-27 05:20:45,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:20:45,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-27 05:20:45,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 210. [2020-10-27 05:20:45,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-10-27 05:20:45,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 305 transitions. [2020-10-27 05:20:45,150 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 305 transitions. Word has length 66 [2020-10-27 05:20:45,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:20:45,152 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 305 transitions. [2020-10-27 05:20:45,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:20:45,152 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 305 transitions. [2020-10-27 05:20:45,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 05:20:45,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:20:45,154 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] [2020-10-27 05:20:45,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:20:45,154 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:20:45,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:20:45,155 INFO L82 PathProgramCache]: Analyzing trace with hash -890008700, now seen corresponding path program 1 times [2020-10-27 05:20:45,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:20:45,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917092380] [2020-10-27 05:20:45,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:20:45,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:45,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:45,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:45,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:45,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:45,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:45,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:46,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:47,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:49,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:49,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 05:20:49,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:20:49,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4471 [2020-10-27 05:20:49,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:49,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:20:49,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 05:20:49,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 05:20:49,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:50,291 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 05:20:50,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:20:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:50,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:50,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:50,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:20:50,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:20:50,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 05:20:50,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:50,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:20:50,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:20:50,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:20:50,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:50,341 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 05:20:50,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917092380] [2020-10-27 05:20:50,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:20:50,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:20:50,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926854729] [2020-10-27 05:20:50,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:20:50,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:20:50,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:20:50,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:20:50,346 INFO L87 Difference]: Start difference. First operand 210 states and 305 transitions. Second operand 5 states. [2020-10-27 05:20:50,828 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-27 05:20:51,891 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-27 05:20:52,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:20:52,098 INFO L93 Difference]: Finished difference Result 598 states and 913 transitions. [2020-10-27 05:20:52,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:20:52,099 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-10-27 05:20:52,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:20:52,103 INFO L225 Difference]: With dead ends: 598 [2020-10-27 05:20:52,103 INFO L226 Difference]: Without dead ends: 479 [2020-10-27 05:20:52,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:20:52,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2020-10-27 05:20:52,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 473. [2020-10-27 05:20:52,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-10-27 05:20:52,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 715 transitions. [2020-10-27 05:20:52,161 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 715 transitions. Word has length 66 [2020-10-27 05:20:52,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:20:52,162 INFO L481 AbstractCegarLoop]: Abstraction has 473 states and 715 transitions. [2020-10-27 05:20:52,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:20:52,162 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 715 transitions. [2020-10-27 05:20:52,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 05:20:52,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:20:52,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:20:52,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:20:52,163 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:20:52,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:20:52,164 INFO L82 PathProgramCache]: Analyzing trace with hash -268479067, now seen corresponding path program 1 times [2020-10-27 05:20:52,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:20:52,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33606756] [2020-10-27 05:20:52,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:20:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:52,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:52,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:52,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:52,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:52,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:53,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:55,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:55,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 05:20:55,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:20:55,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3745 [2020-10-27 05:20:55,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:55,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:20:55,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 05:20:55,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 05:20:55,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:56,508 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 05:20:56,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:20:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:56,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:56,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:56,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:20:56,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:20:56,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 05:20:56,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:56,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:20:56,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:20:56,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:20:56,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:56,557 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 05:20:56,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33606756] [2020-10-27 05:20:56,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:20:56,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:20:56,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754423202] [2020-10-27 05:20:56,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:20:56,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:20:56,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:20:56,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:20:56,564 INFO L87 Difference]: Start difference. First operand 473 states and 715 transitions. Second operand 8 states. [2020-10-27 05:20:57,249 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 05:20:58,464 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:20:58,977 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 05:20:59,580 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 05:21:00,128 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 05:21:00,978 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 05:21:01,552 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 05:21:02,079 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 05:21:02,596 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-27 05:21:02,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:21:02,675 INFO L93 Difference]: Finished difference Result 2069 states and 3208 transitions. [2020-10-27 05:21:02,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 05:21:02,676 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-10-27 05:21:02,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:21:02,685 INFO L225 Difference]: With dead ends: 2069 [2020-10-27 05:21:02,686 INFO L226 Difference]: Without dead ends: 1732 [2020-10-27 05:21:02,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2020-10-27 05:21:02,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2020-10-27 05:21:02,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 473. [2020-10-27 05:21:02,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-10-27 05:21:02,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 712 transitions. [2020-10-27 05:21:02,764 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 712 transitions. Word has length 66 [2020-10-27 05:21:02,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:21:02,765 INFO L481 AbstractCegarLoop]: Abstraction has 473 states and 712 transitions. [2020-10-27 05:21:02,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:21:02,765 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 712 transitions. [2020-10-27 05:21:02,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 05:21:02,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:21:02,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:21:02,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:21:02,766 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:21:02,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:21:02,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1396197964, now seen corresponding path program 1 times [2020-10-27 05:21:02,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:21:02,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619440810] [2020-10-27 05:21:02,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:21:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:02,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:02,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:02,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:02,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:02,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:03,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:03,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:04,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:07,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:07,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 05:21:07,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:21:07,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 05:21:07,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:07,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:21:07,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:21:07,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 05:21:07,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:08,499 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 05:21:08,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:21:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:08,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:08,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:08,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:21:08,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:21:08,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 05:21:08,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:08,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:21:08,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:21:08,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:21:08,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:21:08,569 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 05:21:08,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619440810] [2020-10-27 05:21:08,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:21:08,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:21:08,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224794635] [2020-10-27 05:21:08,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:21:08,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:21:08,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:21:08,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:21:08,578 INFO L87 Difference]: Start difference. First operand 473 states and 712 transitions. Second operand 7 states. [2020-10-27 05:21:09,064 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 05:21:10,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:21:10,076 INFO L93 Difference]: Finished difference Result 1126 states and 1729 transitions. [2020-10-27 05:21:10,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:21:10,077 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2020-10-27 05:21:10,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:21:10,081 INFO L225 Difference]: With dead ends: 1126 [2020-10-27 05:21:10,082 INFO L226 Difference]: Without dead ends: 781 [2020-10-27 05:21:10,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 05:21:10,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-10-27 05:21:10,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 473. [2020-10-27 05:21:10,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-10-27 05:21:10,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 708 transitions. [2020-10-27 05:21:10,160 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 708 transitions. Word has length 66 [2020-10-27 05:21:10,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:21:10,160 INFO L481 AbstractCegarLoop]: Abstraction has 473 states and 708 transitions. [2020-10-27 05:21:10,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:21:10,161 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 708 transitions. [2020-10-27 05:21:10,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 05:21:10,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:21:10,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:21:10,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:21:10,162 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:21:10,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:21:10,163 INFO L82 PathProgramCache]: Analyzing trace with hash -59598790, now seen corresponding path program 1 times [2020-10-27 05:21:10,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:21:10,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751754604] [2020-10-27 05:21:10,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:21:10,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:10,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:10,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:10,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:10,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:10,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:10,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:10,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:12,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:15,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:15,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 05:21:15,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:21:15,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 05:21:15,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:15,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:21:15,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:21:15,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 05:21:15,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:15,754 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 05:21:15,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:21:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:15,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:15,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:15,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:21:15,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:21:15,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 05:21:15,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:15,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:21:15,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:21:15,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:21:15,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:15,813 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 05:21:15,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751754604] [2020-10-27 05:21:15,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:21:15,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:21:15,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150301293] [2020-10-27 05:21:15,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:21:15,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:21:15,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:21:15,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:21:15,815 INFO L87 Difference]: Start difference. First operand 473 states and 708 transitions. Second operand 7 states. [2020-10-27 05:21:16,321 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 05:21:17,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:21:17,304 INFO L93 Difference]: Finished difference Result 1251 states and 1915 transitions. [2020-10-27 05:21:17,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:21:17,305 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2020-10-27 05:21:17,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:21:17,310 INFO L225 Difference]: With dead ends: 1251 [2020-10-27 05:21:17,310 INFO L226 Difference]: Without dead ends: 854 [2020-10-27 05:21:17,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:21:17,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2020-10-27 05:21:17,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 441. [2020-10-27 05:21:17,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-10-27 05:21:17,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 658 transitions. [2020-10-27 05:21:17,387 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 658 transitions. Word has length 66 [2020-10-27 05:21:17,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:21:17,388 INFO L481 AbstractCegarLoop]: Abstraction has 441 states and 658 transitions. [2020-10-27 05:21:17,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:21:17,388 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 658 transitions. [2020-10-27 05:21:17,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 05:21:17,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:21:17,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:21:17,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:21:17,389 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:21:17,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:21:17,390 INFO L82 PathProgramCache]: Analyzing trace with hash 207722669, now seen corresponding path program 1 times [2020-10-27 05:21:17,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:21:17,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83241965] [2020-10-27 05:21:17,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:21:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:17,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:17,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:17,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:17,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:17,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:18,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:19,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:19,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 05:21:19,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:21:19,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2066 [2020-10-27 05:21:19,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:19,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:21:19,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 05:21:19,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 05:21:19,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:21:19,943 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 05:21:19,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:21:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:19,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:19,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:19,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:21:19,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:21:19,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 05:21:19,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:19,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:21:19,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:21:19,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:21:19,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:19,969 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 05:21:19,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83241965] [2020-10-27 05:21:19,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:21:19,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:21:19,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720446918] [2020-10-27 05:21:19,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:21:19,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:21:19,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:21:19,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:21:19,971 INFO L87 Difference]: Start difference. First operand 441 states and 658 transitions. Second operand 4 states. [2020-10-27 05:21:20,464 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-27 05:21:21,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:21:21,294 INFO L93 Difference]: Finished difference Result 865 states and 1320 transitions. [2020-10-27 05:21:21,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:21:21,296 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-27 05:21:21,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:21:21,299 INFO L225 Difference]: With dead ends: 865 [2020-10-27 05:21:21,299 INFO L226 Difference]: Without dead ends: 610 [2020-10-27 05:21:21,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:21:21,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-10-27 05:21:21,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 607. [2020-10-27 05:21:21,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2020-10-27 05:21:21,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 920 transitions. [2020-10-27 05:21:21,407 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 920 transitions. Word has length 67 [2020-10-27 05:21:21,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:21:21,407 INFO L481 AbstractCegarLoop]: Abstraction has 607 states and 920 transitions. [2020-10-27 05:21:21,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:21:21,408 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 920 transitions. [2020-10-27 05:21:21,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 05:21:21,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:21:21,409 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] [2020-10-27 05:21:21,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:21:21,409 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:21:21,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:21:21,410 INFO L82 PathProgramCache]: Analyzing trace with hash 133287543, now seen corresponding path program 1 times [2020-10-27 05:21:21,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:21:21,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191027411] [2020-10-27 05:21:21,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:21:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:21,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:21,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:21,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:21,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:21,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:22,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:22,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 05:21:22,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:21:22,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 953 [2020-10-27 05:21:22,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:22,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:21:22,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 05:21:22,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 05:21:22,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:22,836 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 05:21:22,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:21:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:22,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:22,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:22,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:21:22,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:21:22,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 05:21:22,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:22,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:21:22,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:21:22,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:21:22,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:22,869 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 05:21:22,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191027411] [2020-10-27 05:21:22,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:21:22,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:21:22,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081440703] [2020-10-27 05:21:22,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:21:22,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:21:22,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:21:22,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:21:22,871 INFO L87 Difference]: Start difference. First operand 607 states and 920 transitions. Second operand 4 states. [2020-10-27 05:21:23,359 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-27 05:21:24,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:21:24,186 INFO L93 Difference]: Finished difference Result 1616 states and 2486 transitions. [2020-10-27 05:21:24,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:21:24,186 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-27 05:21:24,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:21:24,193 INFO L225 Difference]: With dead ends: 1616 [2020-10-27 05:21:24,193 INFO L226 Difference]: Without dead ends: 1059 [2020-10-27 05:21:24,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:21:24,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2020-10-27 05:21:24,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1056. [2020-10-27 05:21:24,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1056 states. [2020-10-27 05:21:24,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1608 transitions. [2020-10-27 05:21:24,388 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1608 transitions. Word has length 68 [2020-10-27 05:21:24,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:21:24,389 INFO L481 AbstractCegarLoop]: Abstraction has 1056 states and 1608 transitions. [2020-10-27 05:21:24,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:21:24,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1608 transitions. [2020-10-27 05:21:24,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 05:21:24,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:21:24,390 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 05:21:24,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:21:24,390 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:21:24,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:21:24,391 INFO L82 PathProgramCache]: Analyzing trace with hash -732503811, now seen corresponding path program 1 times [2020-10-27 05:21:24,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:21:24,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875961136] [2020-10-27 05:21:24,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:21:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:24,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:24,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:24,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:24,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:25,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:26,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:26,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 05:21:26,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:21:26,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1952 [2020-10-27 05:21:26,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:26,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:21:26,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:21:26,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 05:21:26,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:26,868 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 05:21:26,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:21:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:26,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:26,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:26,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:21:26,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:21:26,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 05:21:26,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:26,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:21:26,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:21:26,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:21:26,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:26,929 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 05:21:26,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875961136] [2020-10-27 05:21:26,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:21:26,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:21:26,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662887607] [2020-10-27 05:21:26,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:21:26,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:21:26,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:21:26,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:21:26,932 INFO L87 Difference]: Start difference. First operand 1056 states and 1608 transitions. Second operand 6 states. [2020-10-27 05:21:27,463 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:21:28,574 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 05:21:28,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:21:28,811 INFO L93 Difference]: Finished difference Result 3039 states and 4668 transitions. [2020-10-27 05:21:28,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:21:28,812 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-27 05:21:28,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:21:28,823 INFO L225 Difference]: With dead ends: 3039 [2020-10-27 05:21:28,823 INFO L226 Difference]: Without dead ends: 2031 [2020-10-27 05:21:28,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:21:28,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2020-10-27 05:21:29,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 2028. [2020-10-27 05:21:29,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2028 states. [2020-10-27 05:21:29,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2028 states to 2028 states and 3099 transitions. [2020-10-27 05:21:29,179 INFO L78 Accepts]: Start accepts. Automaton has 2028 states and 3099 transitions. Word has length 69 [2020-10-27 05:21:29,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:21:29,180 INFO L481 AbstractCegarLoop]: Abstraction has 2028 states and 3099 transitions. [2020-10-27 05:21:29,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:21:29,180 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 3099 transitions. [2020-10-27 05:21:29,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 05:21:29,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:21:29,181 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 05:21:29,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 05:21:29,181 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:21:29,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:21:29,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1125918178, now seen corresponding path program 1 times [2020-10-27 05:21:29,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:21:29,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556469602] [2020-10-27 05:21:29,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:21:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:29,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:29,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:29,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:29,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:29,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:29,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 05:21:29,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:21:29,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 601 [2020-10-27 05:21:29,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:29,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:21:29,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 05:21:29,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 05:21:29,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:30,231 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 05:21:30,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:21:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:30,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:30,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:30,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:21:30,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:21:30,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 05:21:30,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:30,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:21:30,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:21:30,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:21:30,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:30,256 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 05:21:30,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556469602] [2020-10-27 05:21:30,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:21:30,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:21:30,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346937646] [2020-10-27 05:21:30,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:21:30,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:21:30,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:21:30,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:21:30,257 INFO L87 Difference]: Start difference. First operand 2028 states and 3099 transitions. Second operand 4 states. [2020-10-27 05:21:30,746 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-27 05:21:31,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:21:31,884 INFO L93 Difference]: Finished difference Result 5635 states and 8630 transitions. [2020-10-27 05:21:31,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:21:31,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-10-27 05:21:31,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:21:31,902 INFO L225 Difference]: With dead ends: 5635 [2020-10-27 05:21:31,902 INFO L226 Difference]: Without dead ends: 3663 [2020-10-27 05:21:31,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:21:31,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3663 states. [2020-10-27 05:21:32,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3663 to 3660. [2020-10-27 05:21:32,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3660 states. [2020-10-27 05:21:32,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 5550 transitions. [2020-10-27 05:21:32,569 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 5550 transitions. Word has length 69 [2020-10-27 05:21:32,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:21:32,570 INFO L481 AbstractCegarLoop]: Abstraction has 3660 states and 5550 transitions. [2020-10-27 05:21:32,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:21:32,570 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 5550 transitions. [2020-10-27 05:21:32,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 05:21:32,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:21:32,571 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:21:32,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 05:21:32,571 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:21:32,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:21:32,572 INFO L82 PathProgramCache]: Analyzing trace with hash -260382760, now seen corresponding path program 1 times [2020-10-27 05:21:32,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:21:32,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002520539] [2020-10-27 05:21:32,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:21:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:32,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:32,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:32,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:32,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:32,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 05:21:32,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:21:32,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-10-27 05:21:32,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:21:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 05:21:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 05:21:32,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:33,435 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 05:21:33,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:21:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:33,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:33,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:33,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:21:33,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:21:33,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 05:21:33,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:33,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:21:33,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:21:33,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:21:33,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:33,469 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 05:21:33,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002520539] [2020-10-27 05:21:33,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:21:33,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:21:33,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330751229] [2020-10-27 05:21:33,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:21:33,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:21:33,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:21:33,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:21:33,472 INFO L87 Difference]: Start difference. First operand 3660 states and 5550 transitions. Second operand 4 states. [2020-10-27 05:21:33,962 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-27 05:21:35,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:21:35,345 INFO L93 Difference]: Finished difference Result 10205 states and 15454 transitions. [2020-10-27 05:21:35,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:21:35,346 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-27 05:21:35,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:21:35,373 INFO L225 Difference]: With dead ends: 10205 [2020-10-27 05:21:35,373 INFO L226 Difference]: Without dead ends: 6607 [2020-10-27 05:21:35,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:21:35,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6607 states. [2020-10-27 05:21:36,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6607 to 6604. [2020-10-27 05:21:36,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6604 states. [2020-10-27 05:21:36,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6604 states to 6604 states and 9891 transitions. [2020-10-27 05:21:36,200 INFO L78 Accepts]: Start accepts. Automaton has 6604 states and 9891 transitions. Word has length 70 [2020-10-27 05:21:36,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:21:36,200 INFO L481 AbstractCegarLoop]: Abstraction has 6604 states and 9891 transitions. [2020-10-27 05:21:36,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:21:36,201 INFO L276 IsEmpty]: Start isEmpty. Operand 6604 states and 9891 transitions. [2020-10-27 05:21:36,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 05:21:36,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:21:36,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:21:36,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 05:21:36,202 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:21:36,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:21:36,202 INFO L82 PathProgramCache]: Analyzing trace with hash -983340342, now seen corresponding path program 1 times [2020-10-27 05:21:36,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:21:36,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899588511] [2020-10-27 05:21:36,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:21:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:36,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:36,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:36,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:36,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:36,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 05:21:36,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 05:21:36,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-10-27 05:21:36,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:36,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:21:36,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:21:36,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 05:21:36,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:37,246 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 05:21:37,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:21:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:37,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:37,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:37,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:21:37,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:21:37,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 05:21:37,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:37,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:21:37,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:21:37,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:21:37,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:37,289 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 05:21:37,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899588511] [2020-10-27 05:21:37,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:21:37,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:21:37,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554788639] [2020-10-27 05:21:37,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:21:37,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:21:37,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:21:37,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:21:37,291 INFO L87 Difference]: Start difference. First operand 6604 states and 9891 transitions. Second operand 6 states. [2020-10-27 05:21:37,821 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-27 05:21:39,033 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 05:21:40,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:21:40,399 INFO L93 Difference]: Finished difference Result 19607 states and 29373 transitions. [2020-10-27 05:21:40,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:21:40,400 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-27 05:21:40,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:21:40,444 INFO L225 Difference]: With dead ends: 19607 [2020-10-27 05:21:40,444 INFO L226 Difference]: Without dead ends: 13063 [2020-10-27 05:21:40,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:21:40,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13063 states. [2020-10-27 05:21:42,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13063 to 13060. [2020-10-27 05:21:42,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13060 states. [2020-10-27 05:21:42,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13060 states to 13060 states and 19466 transitions. [2020-10-27 05:21:42,154 INFO L78 Accepts]: Start accepts. Automaton has 13060 states and 19466 transitions. Word has length 71 [2020-10-27 05:21:42,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:21:42,155 INFO L481 AbstractCegarLoop]: Abstraction has 13060 states and 19466 transitions. [2020-10-27 05:21:42,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:21:42,155 INFO L276 IsEmpty]: Start isEmpty. Operand 13060 states and 19466 transitions. [2020-10-27 05:21:42,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 05:21:42,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:21:42,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:21:42,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 05:21:42,156 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:21:42,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:21:42,156 INFO L82 PathProgramCache]: Analyzing trace with hash -117807953, now seen corresponding path program 1 times [2020-10-27 05:21:42,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:21:42,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787483524] [2020-10-27 05:21:42,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:21:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:42,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:42,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:42,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:42,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 05:21:42,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 05:21:42,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-27 05:21:42,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:42,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:21:42,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-27 05:21:42,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 05:21:42,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:42,907 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 05:21:42,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:21:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:42,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:42,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:42,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:21:42,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:21:42,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 05:21:42,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:42,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:21:42,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:21:42,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:21:42,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:42,933 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 05:21:42,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787483524] [2020-10-27 05:21:42,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:21:42,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:21:42,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579731101] [2020-10-27 05:21:42,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:21:42,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:21:42,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:21:42,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:21:42,935 INFO L87 Difference]: Start difference. First operand 13060 states and 19466 transitions. Second operand 4 states. [2020-10-27 05:21:43,423 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-27 05:21:46,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:21:46,857 INFO L93 Difference]: Finished difference Result 36490 states and 54094 transitions. [2020-10-27 05:21:46,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:21:46,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-10-27 05:21:46,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:21:46,914 INFO L225 Difference]: With dead ends: 36490 [2020-10-27 05:21:46,914 INFO L226 Difference]: Without dead ends: 23494 [2020-10-27 05:21:46,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:21:46,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23494 states. [2020-10-27 05:21:49,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23494 to 23467. [2020-10-27 05:21:49,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23467 states. [2020-10-27 05:21:49,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23467 states to 23467 states and 34346 transitions. [2020-10-27 05:21:49,932 INFO L78 Accepts]: Start accepts. Automaton has 23467 states and 34346 transitions. Word has length 71 [2020-10-27 05:21:49,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:21:49,932 INFO L481 AbstractCegarLoop]: Abstraction has 23467 states and 34346 transitions. [2020-10-27 05:21:49,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:21:49,932 INFO L276 IsEmpty]: Start isEmpty. Operand 23467 states and 34346 transitions. [2020-10-27 05:21:49,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-27 05:21:49,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:21:49,933 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] [2020-10-27 05:21:49,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 05:21:49,934 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:21:49,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:21:49,934 INFO L82 PathProgramCache]: Analyzing trace with hash -85794095, now seen corresponding path program 1 times [2020-10-27 05:21:49,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:21:49,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423576595] [2020-10-27 05:21:49,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:21:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:49,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:50,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:50,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 05:21:50,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:21:50,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-27 05:21:50,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:50,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:21:50,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-27 05:21:50,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 05:21:50,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:50,580 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 05:21:50,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:21:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:50,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:50,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:50,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:21:50,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:21:50,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 05:21:50,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:50,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:21:50,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:21:50,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:21:50,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:50,605 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 05:21:50,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423576595] [2020-10-27 05:21:50,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:21:50,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:21:50,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245602976] [2020-10-27 05:21:50,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:21:50,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:21:50,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:21:50,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:21:50,607 INFO L87 Difference]: Start difference. First operand 23467 states and 34346 transitions. Second operand 5 states. [2020-10-27 05:21:56,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:21:56,275 INFO L93 Difference]: Finished difference Result 38214 states and 55676 transitions. [2020-10-27 05:21:56,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:21:56,275 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-27 05:21:56,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:21:56,354 INFO L225 Difference]: With dead ends: 38214 [2020-10-27 05:21:56,354 INFO L226 Difference]: Without dead ends: 38211 [2020-10-27 05:21:56,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:21:56,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38211 states. [2020-10-27 05:21:59,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38211 to 23979. [2020-10-27 05:21:59,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23979 states. [2020-10-27 05:22:00,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23979 states to 23979 states and 34666 transitions. [2020-10-27 05:22:00,022 INFO L78 Accepts]: Start accepts. Automaton has 23979 states and 34666 transitions. Word has length 72 [2020-10-27 05:22:00,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:22:00,022 INFO L481 AbstractCegarLoop]: Abstraction has 23979 states and 34666 transitions. [2020-10-27 05:22:00,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:22:00,022 INFO L276 IsEmpty]: Start isEmpty. Operand 23979 states and 34666 transitions. [2020-10-27 05:22:00,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 05:22:00,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:22:00,028 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:22:00,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 05:22:00,028 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:22:00,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:22:00,029 INFO L82 PathProgramCache]: Analyzing trace with hash 2132641618, now seen corresponding path program 1 times [2020-10-27 05:22:00,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:22:00,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888419992] [2020-10-27 05:22:00,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:22:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:00,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:00,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:00,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:00,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:00,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:00,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:01,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:01,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:01,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:03,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:03,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:04,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:05,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:05,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 05:22:05,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:22:05,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-27 05:22:05,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:05,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:22:05,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:22:05,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 05:22:05,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:05,823 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 05:22:05,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:22:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:05,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:05,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:05,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:22:05,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:22:05,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 05:22:05,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:05,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:22:05,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:22:05,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:22:05,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:05,898 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:22:05,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888419992] [2020-10-27 05:22:05,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 05:22:05,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 05:22:05,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112204368] [2020-10-27 05:22:05,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:22:05,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:22:05,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:22:05,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:22:05,901 INFO L87 Difference]: Start difference. First operand 23979 states and 34666 transitions. Second operand 11 states. [2020-10-27 05:22:06,523 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 05:22:11,484 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-27 05:22:12,064 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-27 05:22:12,558 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-27 05:22:19,318 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-27 05:22:32,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:22:32,639 INFO L93 Difference]: Finished difference Result 160815 states and 229930 transitions. [2020-10-27 05:22:32,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-27 05:22:32,640 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-10-27 05:22:32,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:22:33,018 INFO L225 Difference]: With dead ends: 160815 [2020-10-27 05:22:33,018 INFO L226 Difference]: Without dead ends: 136876 [2020-10-27 05:22:33,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=406, Invalid=1400, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 05:22:33,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136876 states. [2020-10-27 05:22:41,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136876 to 53339. [2020-10-27 05:22:41,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53339 states. [2020-10-27 05:22:41,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53339 states to 53339 states and 75866 transitions. [2020-10-27 05:22:41,842 INFO L78 Accepts]: Start accepts. Automaton has 53339 states and 75866 transitions. Word has length 98 [2020-10-27 05:22:41,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:22:41,842 INFO L481 AbstractCegarLoop]: Abstraction has 53339 states and 75866 transitions. [2020-10-27 05:22:41,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:22:41,843 INFO L276 IsEmpty]: Start isEmpty. Operand 53339 states and 75866 transitions. [2020-10-27 05:22:41,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 05:22:41,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:22:41,855 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:22:41,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 05:22:41,855 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:22:41,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:22:41,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1362963508, now seen corresponding path program 1 times [2020-10-27 05:22:41,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:22:41,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416169463] [2020-10-27 05:22:41,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:22:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:41,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:41,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:41,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:42,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:42,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:46,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:46,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 05:22:46,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:22:46,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 05:22:46,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:46,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:22:46,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:22:46,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 05:22:46,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:47,654 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 05:22:47,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:22:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:47,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:47,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:47,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:22:47,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:22:47,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 05:22:47,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:47,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:22:47,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:22:47,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:22:47,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:47,733 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:22:47,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416169463] [2020-10-27 05:22:47,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 05:22:47,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 05:22:47,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379974489] [2020-10-27 05:22:47,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:22:47,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:22:47,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:22:47,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:22:47,736 INFO L87 Difference]: Start difference. First operand 53339 states and 75866 transitions. Second operand 11 states. [2020-10-27 05:22:48,340 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 05:22:51,353 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2020-10-27 05:22:52,572 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-27 05:22:53,699 WARN L193 SmtUtils]: Spent 911.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 171 [2020-10-27 05:22:54,214 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:23:29,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:23:29,733 INFO L93 Difference]: Finished difference Result 278355 states and 392463 transitions. [2020-10-27 05:23:29,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 05:23:29,734 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-10-27 05:23:29,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:23:30,266 INFO L225 Difference]: With dead ends: 278355 [2020-10-27 05:23:30,266 INFO L226 Difference]: Without dead ends: 225056 [2020-10-27 05:23:30,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=307, Invalid=953, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 05:23:30,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225056 states.