/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/array-lopstr16/flag_loopdep_simple.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:02:52,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:02:52,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:02:52,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:02:52,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:02:52,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:02:52,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:02:52,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:02:52,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:02:52,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:02:52,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:02:52,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:02:52,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:02:52,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:02:52,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:02:52,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:02:52,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:02:52,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:02:52,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:02:52,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:02:52,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:02:52,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:02:52,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:02:52,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:02:52,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:02:52,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:02:52,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:02:52,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:02:52,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:02:52,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:02:52,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:02:52,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:02:52,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:02:52,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:02:52,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:02:52,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:02:52,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:02:52,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:02:52,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:02:52,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:02:52,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:02:52,803 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 [2020-10-29 04:02:52,859 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:02:52,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:02:52,865 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:02:52,865 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:02:52,865 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:02:52,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:02:52,866 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:02:52,866 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:02:52,866 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:02:52,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:02:52,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:02:52,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:02:52,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:02:52,868 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:02:52,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:02:52,869 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:02:52,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:02:52,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:02:52,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:02:52,869 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:02:52,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:02:52,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:02:52,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:02:52,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:02:52,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:02:52,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:02:52,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:02:52,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:02:52,871 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:02:52,871 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:02:53,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:02:53,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:02:53,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:02:53,339 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:02:53,340 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:02:53,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-lopstr16/flag_loopdep_simple.i [2020-10-29 04:02:53,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ad7d148b/78358084e97a423f9485b18fa19c5b89/FLAGedcd3cb66 [2020-10-29 04:02:54,148 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:02:54,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-lopstr16/flag_loopdep_simple.i [2020-10-29 04:02:54,167 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ad7d148b/78358084e97a423f9485b18fa19c5b89/FLAGedcd3cb66 [2020-10-29 04:02:54,499 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ad7d148b/78358084e97a423f9485b18fa19c5b89 [2020-10-29 04:02:54,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:02:54,510 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:02:54,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:02:54,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:02:54,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:02:54,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:02:54" (1/1) ... [2020-10-29 04:02:54,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62298b6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:02:54, skipping insertion in model container [2020-10-29 04:02:54,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:02:54" (1/1) ... [2020-10-29 04:02:54,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:02:54,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:02:54,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:02:54,741 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:02:54,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:02:54,783 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:02:54,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:02:54 WrapperNode [2020-10-29 04:02:54,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:02:54,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:02:54,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:02:54,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:02:54,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:02:54" (1/1) ... [2020-10-29 04:02:54,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:02:54" (1/1) ... [2020-10-29 04:02:54,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:02:54" (1/1) ... [2020-10-29 04:02:54,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:02:54" (1/1) ... [2020-10-29 04:02:54,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:02:54" (1/1) ... [2020-10-29 04:02:54,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:02:54" (1/1) ... [2020-10-29 04:02:54,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:02:54" (1/1) ... [2020-10-29 04:02:54,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:02:54,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:02:54,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:02:54,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:02:54,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:02:54" (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 [2020-10-29 04:02:54,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:02:54,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:02:54,923 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:02:54,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 04:02:54,923 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-29 04:02:54,923 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:02:54,924 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:02:54,924 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:02:54,924 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 04:02:54,924 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 04:02:54,924 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:02:54,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:02:54,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 04:02:54,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 04:02:54,925 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 04:02:54,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:02:54,925 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:02:54,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:02:54,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:02:54,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:02:54,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:02:54,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:02:55,471 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:02:55,472 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 04:02:55,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:02:55 BoogieIcfgContainer [2020-10-29 04:02:55,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:02:55,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:02:55,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:02:55,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:02:55,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:02:54" (1/3) ... [2020-10-29 04:02:55,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38669766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:02:55, skipping insertion in model container [2020-10-29 04:02:55,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:02:54" (2/3) ... [2020-10-29 04:02:55,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38669766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:02:55, skipping insertion in model container [2020-10-29 04:02:55,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:02:55" (3/3) ... [2020-10-29 04:02:55,493 INFO L111 eAbstractionObserver]: Analyzing ICFG flag_loopdep_simple.i [2020-10-29 04:02:55,529 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:02:55,539 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:02:55,563 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:02:55,615 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:02:55,615 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:02:55,616 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:02:55,616 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:02:55,616 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:02:55,616 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:02:55,616 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:02:55,616 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:02:55,644 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-29 04:02:55,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 04:02:55,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:02:55,655 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] [2020-10-29 04:02:55,656 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:02:55,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:02:55,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1917384497, now seen corresponding path program 1 times [2020-10-29 04:02:55,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:02:55,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872577931] [2020-10-29 04:02:55,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:02:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:55,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:55,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:56,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:56,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 04:02:56,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:02:56,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-29 04:02:56,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:56,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:56,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:02:56,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 04:02:56,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:02:56,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 04:02:56,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:02:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:56,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:56,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:56,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:02:56,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:56,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:02:56,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:56,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:56,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:02:56,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:02:56,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:02:56,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:02:56,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:02:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:56,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:56,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:56,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:56,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:02:56,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:02:56,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:02:56,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:56,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:56,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:02:56,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 04:02:56,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:02:56,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:56,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:02:56,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872577931] [2020-10-29 04:02:56,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:02:56,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 04:02:56,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299249165] [2020-10-29 04:02:56,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:02:56,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:02:56,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:02:56,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:02:56,353 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 5 states. [2020-10-29 04:02:56,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:02:56,653 INFO L93 Difference]: Finished difference Result 95 states and 139 transitions. [2020-10-29 04:02:56,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 04:02:56,656 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-29 04:02:56,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:02:56,667 INFO L225 Difference]: With dead ends: 95 [2020-10-29 04:02:56,668 INFO L226 Difference]: Without dead ends: 59 [2020-10-29 04:02:56,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:02:56,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-29 04:02:56,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2020-10-29 04:02:56,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-29 04:02:56,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-29 04:02:56,735 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 22 [2020-10-29 04:02:56,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:02:56,736 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-29 04:02:56,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:02:56,736 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-29 04:02:56,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-29 04:02:56,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:02:56,738 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] [2020-10-29 04:02:56,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:02:56,739 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:02:56,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:02:56,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1542699897, now seen corresponding path program 1 times [2020-10-29 04:02:56,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:02:56,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449211832] [2020-10-29 04:02:56,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:02:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:56,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:56,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:56,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:57,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:57,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 04:02:57,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:02:57,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 613 [2020-10-29 04:02:57,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:57,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:57,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:02:57,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:02:57,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:02:57,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 04:02:57,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:02:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:57,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:57,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:57,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:02:57,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:57,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:02:57,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:57,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:57,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:02:57,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:02:57,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:02:57,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:57,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:02:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:57,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:57,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:57,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:57,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:02:57,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:02:57,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 04:02:57,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:57,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:57,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 04:02:57,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:02:57,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:02:57,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 04:02:57,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:02:57,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449211832] [2020-10-29 04:02:57,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:02:57,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 04:02:57,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927463288] [2020-10-29 04:02:57,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:02:57,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:02:57,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:02:57,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:02:57,535 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-10-29 04:02:57,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:02:57,778 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2020-10-29 04:02:57,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 04:02:57,779 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-29 04:02:57,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:02:57,780 INFO L225 Difference]: With dead ends: 61 [2020-10-29 04:02:57,780 INFO L226 Difference]: Without dead ends: 33 [2020-10-29 04:02:57,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:02:57,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-29 04:02:57,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-10-29 04:02:57,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-29 04:02:57,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-10-29 04:02:57,790 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 25 [2020-10-29 04:02:57,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:02:57,790 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-10-29 04:02:57,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:02:57,791 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-10-29 04:02:57,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 04:02:57,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:02:57,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:02:57,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:02:57,792 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:02:57,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:02:57,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1385738581, now seen corresponding path program 1 times [2020-10-29 04:02:57,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:02:57,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307986627] [2020-10-29 04:02:57,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:02:57,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:57,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:57,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:57,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:58,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:58,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 04:02:58,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:02:58,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1178 [2020-10-29 04:02:58,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:58,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:58,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:02:58,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:02:58,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 04:02:58,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:02:59,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:02:59,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:59,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:59,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:59,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:02:59,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:02:59,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:02:59,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:59,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:59,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:02:59,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:02:59,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:02:59,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:02:59,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:02:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:02:59,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:59,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:02:59,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:02:59,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:02:59,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:02:59,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 04:02:59,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:02:59,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:02:59,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:02:59,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:02:59,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 04:02:59,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:02:59,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:02:59,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307986627] [2020-10-29 04:02:59,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:02:59,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 04:02:59,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488848459] [2020-10-29 04:02:59,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 04:02:59,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:02:59,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 04:02:59,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:02:59,313 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 14 states. [2020-10-29 04:03:00,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:00,006 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2020-10-29 04:03:00,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 04:03:00,006 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 27 [2020-10-29 04:03:00,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:00,008 INFO L225 Difference]: With dead ends: 67 [2020-10-29 04:03:00,008 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 04:03:00,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2020-10-29 04:03:00,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 04:03:00,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2020-10-29 04:03:00,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 04:03:00,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-29 04:03:00,019 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 27 [2020-10-29 04:03:00,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:00,019 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-29 04:03:00,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 04:03:00,019 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-29 04:03:00,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 04:03:00,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:00,021 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 04:03:00,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:03:00,021 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:00,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:00,022 INFO L82 PathProgramCache]: Analyzing trace with hash -182516142, now seen corresponding path program 1 times [2020-10-29 04:03:00,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:00,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476134220] [2020-10-29 04:03:00,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:00,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:00,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:00,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:00,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:00,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:00,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 04:03:00,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:03:00,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 693 [2020-10-29 04:03:00,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:00,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:00,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:03:00,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:03:00,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 04:03:00,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:00,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:00,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:00,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:00,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:00,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:00,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:03:00,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:00,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:00,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:00,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:00,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:00,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:00,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:03:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:00,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:00,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:00,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:00,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:03:00,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:03:00,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 04:03:00,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:00,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:00,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:03:00,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:00,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 04:03:00,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:00,847 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 04:03:00,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476134220] [2020-10-29 04:03:00,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:03:00,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 04:03:00,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923467749] [2020-10-29 04:03:00,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:03:00,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:00,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:03:00,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:03:00,849 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 5 states. [2020-10-29 04:03:01,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:01,000 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2020-10-29 04:03:01,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 04:03:01,001 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-10-29 04:03:01,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:01,003 INFO L225 Difference]: With dead ends: 54 [2020-10-29 04:03:01,004 INFO L226 Difference]: Without dead ends: 41 [2020-10-29 04:03:01,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:03:01,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-29 04:03:01,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-29 04:03:01,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 04:03:01,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-10-29 04:03:01,013 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 32 [2020-10-29 04:03:01,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:01,013 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-10-29 04:03:01,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:03:01,013 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-10-29 04:03:01,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 04:03:01,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:01,015 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 04:03:01,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:03:01,015 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:01,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:01,016 INFO L82 PathProgramCache]: Analyzing trace with hash 311035518, now seen corresponding path program 1 times [2020-10-29 04:03:01,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:01,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031625661] [2020-10-29 04:03:01,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:01,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:01,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:01,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:01,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 04:03:01,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:03:01,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-29 04:03:01,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:01,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:01,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:03:01,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:03:01,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 04:03:01,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:01,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:01,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:01,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:01,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:01,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:01,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:03:01,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:01,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:01,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:01,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:01,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:01,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:03:01,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:03:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:01,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:01,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:01,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:03:01,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:01,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 04:03:01,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:01,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:01,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:03:01,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:03:01,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 04:03:01,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:01,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 04:03:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:01,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:01,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:01,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:01,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:01,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:03:01,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:01,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:01,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:01,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:03:01,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:01,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:01,584 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:03:01,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031625661] [2020-10-29 04:03:01,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:01,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:03:01,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378531024] [2020-10-29 04:03:01,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:03:01,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:01,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:03:01,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:03:01,587 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 8 states. [2020-10-29 04:03:02,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:02,037 INFO L93 Difference]: Finished difference Result 72 states and 76 transitions. [2020-10-29 04:03:02,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:03:02,037 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-10-29 04:03:02,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:02,039 INFO L225 Difference]: With dead ends: 72 [2020-10-29 04:03:02,039 INFO L226 Difference]: Without dead ends: 44 [2020-10-29 04:03:02,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:03:02,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-29 04:03:02,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-29 04:03:02,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-29 04:03:02,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-10-29 04:03:02,054 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 38 [2020-10-29 04:03:02,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:02,055 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-10-29 04:03:02,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:03:02,055 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-10-29 04:03:02,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 04:03:02,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:02,058 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-29 04:03:02,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:03:02,058 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:02,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:02,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1519639584, now seen corresponding path program 2 times [2020-10-29 04:03:02,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:02,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757707555] [2020-10-29 04:03:02,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:02,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:02,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:02,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:02,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 04:03:02,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:03:02,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-29 04:03:02,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:02,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:02,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:03:02,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:03:02,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 04:03:02,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:03:02,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:02,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:02,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:02,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:02,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:02,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:02,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:03:02,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:02,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:02,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:02,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:02,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:02,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:02,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:03:02,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:02,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:02,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:02,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 04:03:02,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:02,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 04:03:02,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:02,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:02,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:03:02,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:03:02,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 04:03:02,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:02,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 04:03:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:02,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:02,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:02,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:02,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:02,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:03:02,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:02,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:02,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:02,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:03:02,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:02,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:02,815 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:03:02,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757707555] [2020-10-29 04:03:02,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:02,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 04:03:02,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371652249] [2020-10-29 04:03:02,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:03:02,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:02,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:03:02,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:03:02,818 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 9 states. [2020-10-29 04:03:03,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:03,265 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2020-10-29 04:03:03,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:03:03,266 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-10-29 04:03:03,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:03,267 INFO L225 Difference]: With dead ends: 74 [2020-10-29 04:03:03,267 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 04:03:03,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-10-29 04:03:03,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 04:03:03,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-29 04:03:03,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 04:03:03,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2020-10-29 04:03:03,276 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 40 [2020-10-29 04:03:03,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:03,277 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2020-10-29 04:03:03,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:03:03,277 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2020-10-29 04:03:03,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 04:03:03,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:03,278 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-10-29 04:03:03,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:03:03,279 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:03,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:03,279 INFO L82 PathProgramCache]: Analyzing trace with hash -947990206, now seen corresponding path program 3 times [2020-10-29 04:03:03,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:03,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121822880] [2020-10-29 04:03:03,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:03,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:03,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:03,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:03,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 04:03:03,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:03:03,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 511 [2020-10-29 04:03:03,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:03,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:03,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 04:03:03,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:03:03,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 04:03:03,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:03:03,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:03,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:03,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:03,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:03,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:03,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:03:03,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:03,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:03,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:03,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:03,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:03,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:03:03,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:03:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:03,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:03,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:03,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 04:03:03,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:03,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 04:03:03,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:03,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:03,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 04:03:03,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:03:03,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 04:03:03,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:03:03,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 04:03:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:03,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:03,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:03,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:03,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:03,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:03:03,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:03,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:03,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:03,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:03:03,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:03,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:03,992 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:03:03,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121822880] [2020-10-29 04:03:03,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:03,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 04:03:03,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580361495] [2020-10-29 04:03:03,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 04:03:03,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:03,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 04:03:03,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:03:03,994 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 10 states. [2020-10-29 04:03:04,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:04,424 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2020-10-29 04:03:04,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 04:03:04,425 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-29 04:03:04,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:04,426 INFO L225 Difference]: With dead ends: 76 [2020-10-29 04:03:04,426 INFO L226 Difference]: Without dead ends: 48 [2020-10-29 04:03:04,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2020-10-29 04:03:04,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-29 04:03:04,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-29 04:03:04,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 04:03:04,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-10-29 04:03:04,435 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 42 [2020-10-29 04:03:04,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:04,436 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-10-29 04:03:04,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 04:03:04,436 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-10-29 04:03:04,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 04:03:04,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:04,437 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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] [2020-10-29 04:03:04,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:03:04,437 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:04,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:04,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1518271004, now seen corresponding path program 4 times [2020-10-29 04:03:04,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:04,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580340368] [2020-10-29 04:03:04,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:04,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:04,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:05,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:05,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 04:03:05,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:03:05,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 566 [2020-10-29 04:03:05,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:05,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:05,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:03:05,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:03:05,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 04:03:05,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:05,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:05,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:05,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:05,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:05,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:05,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:03:05,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:05,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:05,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:05,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:05,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:05,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:05,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:03:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:05,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:05,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:05,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 04:03:05,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:05,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 04:03:05,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:05,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:05,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:03:05,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:03:05,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 04:03:05,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:03:05,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:03:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:05,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:05,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:05,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:05,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:05,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:03:05,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:05,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:05,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:03:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:05,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:05,444 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:03:05,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580340368] [2020-10-29 04:03:05,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:05,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 04:03:05,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337852221] [2020-10-29 04:03:05,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 04:03:05,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:05,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 04:03:05,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:03:05,447 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 11 states. [2020-10-29 04:03:06,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:06,027 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2020-10-29 04:03:06,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 04:03:06,028 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-10-29 04:03:06,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:06,029 INFO L225 Difference]: With dead ends: 78 [2020-10-29 04:03:06,029 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 04:03:06,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-10-29 04:03:06,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 04:03:06,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-29 04:03:06,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-29 04:03:06,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2020-10-29 04:03:06,043 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 44 [2020-10-29 04:03:06,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:06,045 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2020-10-29 04:03:06,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 04:03:06,046 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2020-10-29 04:03:06,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 04:03:06,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:06,048 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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] [2020-10-29 04:03:06,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 04:03:06,048 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:06,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:06,049 INFO L82 PathProgramCache]: Analyzing trace with hash 197696006, now seen corresponding path program 5 times [2020-10-29 04:03:06,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:06,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601075161] [2020-10-29 04:03:06,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:06,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:06,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:06,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:06,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 04:03:06,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:03:06,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 718 [2020-10-29 04:03:06,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:06,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:06,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 04:03:06,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:03:06,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 04:03:06,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:06,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:06,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:06,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:06,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:06,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:06,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:03:06,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:06,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:06,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:06,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:06,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:06,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:06,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:03:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:06,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:06,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:06,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 04:03:06,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:06,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-29 04:03:06,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:06,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:06,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 04:03:06,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:03:06,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 04:03:06,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:07,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 04:03:07,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:07,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:07,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:07,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:07,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:07,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:03:07,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:07,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:07,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:07,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:03:07,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:07,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:07,260 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:03:07,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601075161] [2020-10-29 04:03:07,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:07,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 04:03:07,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393496782] [2020-10-29 04:03:07,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 04:03:07,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:07,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 04:03:07,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:03:07,271 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 12 states. [2020-10-29 04:03:07,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:07,966 INFO L93 Difference]: Finished difference Result 80 states and 84 transitions. [2020-10-29 04:03:07,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 04:03:07,970 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-10-29 04:03:07,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:07,971 INFO L225 Difference]: With dead ends: 80 [2020-10-29 04:03:07,971 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 04:03:07,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2020-10-29 04:03:07,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 04:03:07,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-29 04:03:07,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-29 04:03:07,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2020-10-29 04:03:07,990 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 46 [2020-10-29 04:03:07,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:07,990 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2020-10-29 04:03:07,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 04:03:07,991 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2020-10-29 04:03:07,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 04:03:07,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:07,997 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 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] [2020-10-29 04:03:07,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 04:03:07,998 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:07,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:07,999 INFO L82 PathProgramCache]: Analyzing trace with hash -25449048, now seen corresponding path program 6 times [2020-10-29 04:03:07,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:07,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329340175] [2020-10-29 04:03:07,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:08,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:08,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:08,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:08,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 04:03:08,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:03:08,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 836 [2020-10-29 04:03:08,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:08,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:08,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 04:03:08,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:03:08,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 04:03:08,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:08,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:08,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:08,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:08,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:08,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:08,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:03:08,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:08,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:08,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:08,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:08,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:08,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:08,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:03:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:08,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:09,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:09,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 04:03:09,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:09,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 04:03:09,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:09,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:09,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 04:03:09,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:03:09,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 04:03:09,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:09,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 04:03:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:09,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:09,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:09,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:09,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:09,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:03:09,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:09,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:09,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:09,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:03:09,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:09,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:09,137 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 2 proven. 49 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:03:09,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329340175] [2020-10-29 04:03:09,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:09,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 04:03:09,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234338010] [2020-10-29 04:03:09,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 04:03:09,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:09,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 04:03:09,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:03:09,140 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 13 states. [2020-10-29 04:03:09,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:09,664 INFO L93 Difference]: Finished difference Result 82 states and 86 transitions. [2020-10-29 04:03:09,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 04:03:09,664 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-10-29 04:03:09,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:09,665 INFO L225 Difference]: With dead ends: 82 [2020-10-29 04:03:09,665 INFO L226 Difference]: Without dead ends: 54 [2020-10-29 04:03:09,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=170, Invalid=382, Unknown=0, NotChecked=0, Total=552 [2020-10-29 04:03:09,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-29 04:03:09,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-29 04:03:09,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-29 04:03:09,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-10-29 04:03:09,675 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 48 [2020-10-29 04:03:09,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:09,676 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-10-29 04:03:09,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 04:03:09,676 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-10-29 04:03:09,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 04:03:09,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:09,677 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 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] [2020-10-29 04:03:09,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 04:03:09,677 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:09,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:09,678 INFO L82 PathProgramCache]: Analyzing trace with hash 280518858, now seen corresponding path program 7 times [2020-10-29 04:03:09,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:09,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143167575] [2020-10-29 04:03:09,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:09,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:09,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:10,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:10,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 04:03:10,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:03:10,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 877 [2020-10-29 04:03:10,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:10,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:10,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 04:03:10,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:03:10,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 04:03:10,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:10,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:10,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:10,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:10,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:10,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:10,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:03:10,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:10,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:10,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:10,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:10,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:10,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:10,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:03:10,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:10,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:10,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:10,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 04:03:10,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:10,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-29 04:03:10,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:10,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:10,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 04:03:10,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:03:10,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 04:03:10,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:11,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 04:03:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:11,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:11,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:11,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:11,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:11,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:03:11,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:11,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:11,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:11,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:03:11,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:11,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:11,160 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 2 proven. 64 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:03:11,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143167575] [2020-10-29 04:03:11,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:11,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 04:03:11,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089554885] [2020-10-29 04:03:11,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 04:03:11,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:11,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 04:03:11,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:03:11,163 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 14 states. [2020-10-29 04:03:12,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:12,051 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2020-10-29 04:03:12,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 04:03:12,051 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 50 [2020-10-29 04:03:12,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:12,053 INFO L225 Difference]: With dead ends: 84 [2020-10-29 04:03:12,053 INFO L226 Difference]: Without dead ends: 56 [2020-10-29 04:03:12,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=218, Invalid=432, Unknown=0, NotChecked=0, Total=650 [2020-10-29 04:03:12,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-29 04:03:12,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-29 04:03:12,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 04:03:12,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-10-29 04:03:12,063 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 50 [2020-10-29 04:03:12,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:12,063 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-10-29 04:03:12,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 04:03:12,063 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-10-29 04:03:12,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 04:03:12,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:12,065 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 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] [2020-10-29 04:03:12,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 04:03:12,065 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:12,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:12,065 INFO L82 PathProgramCache]: Analyzing trace with hash -2037066900, now seen corresponding path program 8 times [2020-10-29 04:03:12,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:12,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537251291] [2020-10-29 04:03:12,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:12,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:12,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:13,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:13,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 04:03:13,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:03:13,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1080 [2020-10-29 04:03:13,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:13,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:13,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 04:03:13,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:03:13,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 04:03:13,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:13,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:13,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:13,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:13,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:13,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:13,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:03:13,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:13,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:13,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:13,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:13,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:13,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:13,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:03:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:13,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:13,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:13,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 04:03:13,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:13,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-29 04:03:13,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:13,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:13,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 04:03:13,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:03:13,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 04:03:13,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:13,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 04:03:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:13,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:13,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:13,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:13,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:13,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:03:13,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:13,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:13,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:13,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:03:13,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:13,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:13,873 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 2 proven. 81 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:03:13,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537251291] [2020-10-29 04:03:13,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:13,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 04:03:13,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693803936] [2020-10-29 04:03:13,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 04:03:13,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:13,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 04:03:13,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:03:13,877 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 15 states. [2020-10-29 04:03:14,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:14,816 INFO L93 Difference]: Finished difference Result 86 states and 90 transitions. [2020-10-29 04:03:14,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 04:03:14,817 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 52 [2020-10-29 04:03:14,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:14,819 INFO L225 Difference]: With dead ends: 86 [2020-10-29 04:03:14,819 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 04:03:14,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=255, Invalid=501, Unknown=0, NotChecked=0, Total=756 [2020-10-29 04:03:14,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 04:03:14,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-29 04:03:14,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 04:03:14,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2020-10-29 04:03:14,829 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 52 [2020-10-29 04:03:14,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:14,829 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2020-10-29 04:03:14,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 04:03:14,830 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2020-10-29 04:03:14,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 04:03:14,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:14,831 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 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] [2020-10-29 04:03:14,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 04:03:14,831 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:14,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:14,832 INFO L82 PathProgramCache]: Analyzing trace with hash -148953714, now seen corresponding path program 9 times [2020-10-29 04:03:14,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:14,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223054294] [2020-10-29 04:03:14,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:14,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:14,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:16,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:16,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 04:03:16,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:03:16,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1224 [2020-10-29 04:03:16,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:16,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:16,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 04:03:16,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:03:16,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 04:03:16,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:16,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:16,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:16,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:16,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:16,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:16,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:03:16,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:16,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:16,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:16,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:16,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:16,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:16,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:03:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:16,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:16,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:16,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 04:03:16,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:16,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-29 04:03:16,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:16,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:16,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 04:03:16,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:03:16,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 04:03:16,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:16,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:03:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:16,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:16,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:16,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:16,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:16,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:03:16,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:16,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:16,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:16,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:03:16,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:16,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:16,832 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:03:16,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223054294] [2020-10-29 04:03:16,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:16,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 04:03:16,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866967003] [2020-10-29 04:03:16,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 04:03:16,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:16,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 04:03:16,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2020-10-29 04:03:16,835 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 16 states. [2020-10-29 04:03:17,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:17,834 INFO L93 Difference]: Finished difference Result 88 states and 92 transitions. [2020-10-29 04:03:17,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 04:03:17,834 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 54 [2020-10-29 04:03:17,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:17,836 INFO L225 Difference]: With dead ends: 88 [2020-10-29 04:03:17,836 INFO L226 Difference]: Without dead ends: 60 [2020-10-29 04:03:17,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=295, Invalid=575, Unknown=0, NotChecked=0, Total=870 [2020-10-29 04:03:17,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-29 04:03:17,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-29 04:03:17,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-29 04:03:17,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2020-10-29 04:03:17,856 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 54 [2020-10-29 04:03:17,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:17,856 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2020-10-29 04:03:17,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 04:03:17,856 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2020-10-29 04:03:17,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 04:03:17,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:17,858 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 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] [2020-10-29 04:03:17,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 04:03:17,859 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:17,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:17,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1851619120, now seen corresponding path program 10 times [2020-10-29 04:03:17,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:17,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277181060] [2020-10-29 04:03:17,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:17,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:17,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:17,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:19,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:19,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 04:03:19,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:03:19,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1356 [2020-10-29 04:03:19,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:19,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:19,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 04:03:19,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:03:19,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 04:03:19,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:19,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:19,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:19,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:19,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:19,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:19,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:03:19,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:19,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:19,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:19,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:19,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:19,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:19,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:03:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:19,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:19,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:19,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 04:03:19,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:19,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-29 04:03:19,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:19,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:19,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 04:03:19,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:03:19,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 04:03:19,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:20,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 04:03:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:20,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:20,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:20,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:20,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:20,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:03:20,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:20,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:20,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:20,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:03:20,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:20,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:20,072 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 2 proven. 121 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:03:20,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277181060] [2020-10-29 04:03:20,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:20,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 04:03:20,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623825869] [2020-10-29 04:03:20,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 04:03:20,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:20,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 04:03:20,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:03:20,074 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 17 states. [2020-10-29 04:03:21,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:21,203 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2020-10-29 04:03:21,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 04:03:21,203 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-10-29 04:03:21,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:21,204 INFO L225 Difference]: With dead ends: 90 [2020-10-29 04:03:21,204 INFO L226 Difference]: Without dead ends: 62 [2020-10-29 04:03:21,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=338, Invalid=654, Unknown=0, NotChecked=0, Total=992 [2020-10-29 04:03:21,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-29 04:03:21,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-29 04:03:21,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-29 04:03:21,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2020-10-29 04:03:21,215 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 56 [2020-10-29 04:03:21,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:21,215 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2020-10-29 04:03:21,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 04:03:21,215 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2020-10-29 04:03:21,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 04:03:21,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:21,216 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 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] [2020-10-29 04:03:21,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 04:03:21,217 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:21,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:21,217 INFO L82 PathProgramCache]: Analyzing trace with hash 256763986, now seen corresponding path program 11 times [2020-10-29 04:03:21,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:21,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338870863] [2020-10-29 04:03:21,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:21,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:21,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:22,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:22,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 04:03:22,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:03:22,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1380 [2020-10-29 04:03:22,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:22,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:22,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 04:03:22,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:03:22,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 04:03:22,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:22,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:22,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:22,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:22,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:22,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:22,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:03:22,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:22,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:22,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:22,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:22,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:22,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:22,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:03:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:22,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:22,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:22,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:03:22,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:22,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-29 04:03:22,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:22,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:22,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 04:03:22,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:03:22,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 04:03:22,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:23,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 04:03:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:23,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:23,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:23,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:23,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:23,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:03:23,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:23,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:23,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:23,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:03:23,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:23,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:23,131 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 2 proven. 144 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:03:23,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338870863] [2020-10-29 04:03:23,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:23,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 04:03:23,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839942325] [2020-10-29 04:03:23,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 04:03:23,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:23,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 04:03:23,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2020-10-29 04:03:23,135 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 18 states. [2020-10-29 04:03:23,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:23,955 INFO L93 Difference]: Finished difference Result 92 states and 96 transitions. [2020-10-29 04:03:23,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 04:03:23,956 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 58 [2020-10-29 04:03:23,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:23,957 INFO L225 Difference]: With dead ends: 92 [2020-10-29 04:03:23,957 INFO L226 Difference]: Without dead ends: 64 [2020-10-29 04:03:23,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=360, Invalid=762, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 04:03:23,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-29 04:03:23,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-29 04:03:23,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 04:03:23,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2020-10-29 04:03:23,977 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 58 [2020-10-29 04:03:23,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:23,977 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2020-10-29 04:03:23,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 04:03:23,977 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2020-10-29 04:03:23,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 04:03:23,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:23,979 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 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] [2020-10-29 04:03:23,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 04:03:23,979 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:23,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:23,980 INFO L82 PathProgramCache]: Analyzing trace with hash 904304884, now seen corresponding path program 12 times [2020-10-29 04:03:23,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:23,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291249912] [2020-10-29 04:03:23,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:24,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:24,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:25,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:25,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 04:03:25,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:03:25,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1539 [2020-10-29 04:03:25,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:25,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:25,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 04:03:25,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:03:25,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 04:03:25,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:25,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:25,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:25,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:25,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:25,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:25,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:03:25,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:25,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:25,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:25,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:25,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:25,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:25,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:03:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:25,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:25,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:25,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 04:03:25,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:25,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-29 04:03:25,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:25,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:25,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 04:03:25,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:03:25,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 04:03:25,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:26,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-29 04:03:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:26,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:26,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:26,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:26,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:26,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:03:26,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:26,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:26,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:26,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:03:26,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:26,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:26,098 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 2 proven. 169 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:03:26,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291249912] [2020-10-29 04:03:26,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:26,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 04:03:26,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608163917] [2020-10-29 04:03:26,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 04:03:26,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:26,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 04:03:26,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=216, Unknown=0, NotChecked=0, Total=342 [2020-10-29 04:03:26,100 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand 19 states. [2020-10-29 04:03:27,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:27,089 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2020-10-29 04:03:27,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 04:03:27,089 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 60 [2020-10-29 04:03:27,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:27,090 INFO L225 Difference]: With dead ends: 94 [2020-10-29 04:03:27,091 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 04:03:27,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=407, Invalid=853, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 04:03:27,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 04:03:27,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-29 04:03:27,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-29 04:03:27,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2020-10-29 04:03:27,100 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 60 [2020-10-29 04:03:27,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:27,100 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2020-10-29 04:03:27,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 04:03:27,100 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2020-10-29 04:03:27,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 04:03:27,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:27,101 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 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] [2020-10-29 04:03:27,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 04:03:27,102 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:27,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:27,102 INFO L82 PathProgramCache]: Analyzing trace with hash 420849942, now seen corresponding path program 13 times [2020-10-29 04:03:27,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:27,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104103712] [2020-10-29 04:03:27,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:27,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:27,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:28,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:28,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 04:03:28,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:03:28,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1599 [2020-10-29 04:03:28,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:28,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:28,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 04:03:28,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:03:28,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 04:03:28,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:28,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:28,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:28,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:28,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:28,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:28,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:03:28,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:28,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:28,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:28,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:28,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:28,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:28,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:03:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:28,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:28,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:28,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 04:03:28,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:28,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-29 04:03:28,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:28,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:28,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 04:03:28,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:03:28,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 04:03:28,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:29,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 04:03:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:29,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:29,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:29,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:29,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:29,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:03:29,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:29,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:29,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:29,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:03:29,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:29,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:29,799 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 2 proven. 196 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:03:29,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104103712] [2020-10-29 04:03:29,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:29,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 04:03:29,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63183764] [2020-10-29 04:03:29,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 04:03:29,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:29,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 04:03:29,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=238, Unknown=0, NotChecked=0, Total=380 [2020-10-29 04:03:29,804 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 20 states. [2020-10-29 04:03:31,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:31,077 INFO L93 Difference]: Finished difference Result 96 states and 100 transitions. [2020-10-29 04:03:31,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 04:03:31,078 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 62 [2020-10-29 04:03:31,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:31,079 INFO L225 Difference]: With dead ends: 96 [2020-10-29 04:03:31,079 INFO L226 Difference]: Without dead ends: 68 [2020-10-29 04:03:31,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=485, Invalid=921, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 04:03:31,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-29 04:03:31,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-29 04:03:31,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 04:03:31,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2020-10-29 04:03:31,089 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 62 [2020-10-29 04:03:31,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:31,089 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2020-10-29 04:03:31,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 04:03:31,089 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2020-10-29 04:03:31,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 04:03:31,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:31,090 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 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] [2020-10-29 04:03:31,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 04:03:31,091 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:31,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:31,091 INFO L82 PathProgramCache]: Analyzing trace with hash -322881352, now seen corresponding path program 14 times [2020-10-29 04:03:31,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:31,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503803915] [2020-10-29 04:03:31,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:31,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:31,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:32,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:32,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 04:03:32,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:03:32,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1679 [2020-10-29 04:03:32,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:32,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:32,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 04:03:32,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:03:32,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 04:03:32,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:32,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:32,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:32,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:32,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:32,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:32,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:03:32,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:32,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:32,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:32,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:32,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:32,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:32,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:03:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:32,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:33,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:33,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 04:03:33,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:33,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-29 04:03:33,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:33,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:33,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 04:03:33,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:03:33,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 04:03:33,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:33,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 04:03:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:33,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:33,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:33,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:33,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:33,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:03:33,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:33,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:33,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:33,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:03:33,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:33,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:33,476 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 2 proven. 225 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:03:33,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503803915] [2020-10-29 04:03:33,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:33,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 04:03:33,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408848866] [2020-10-29 04:03:33,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 04:03:33,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:33,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 04:03:33,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=261, Unknown=0, NotChecked=0, Total=420 [2020-10-29 04:03:33,478 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand 21 states. [2020-10-29 04:03:34,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:34,573 INFO L93 Difference]: Finished difference Result 98 states and 102 transitions. [2020-10-29 04:03:34,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 04:03:34,574 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 64 [2020-10-29 04:03:34,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:34,575 INFO L225 Difference]: With dead ends: 98 [2020-10-29 04:03:34,575 INFO L226 Difference]: Without dead ends: 70 [2020-10-29 04:03:34,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=510, Invalid=1050, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 04:03:34,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-29 04:03:34,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-29 04:03:34,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-29 04:03:34,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2020-10-29 04:03:34,590 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 64 [2020-10-29 04:03:34,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:34,590 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2020-10-29 04:03:34,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 04:03:34,590 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2020-10-29 04:03:34,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 04:03:34,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:34,591 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 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] [2020-10-29 04:03:34,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 04:03:34,591 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:34,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:34,592 INFO L82 PathProgramCache]: Analyzing trace with hash -2084083750, now seen corresponding path program 15 times [2020-10-29 04:03:34,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:34,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455441153] [2020-10-29 04:03:34,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:34,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:34,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:34,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:36,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:36,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 04:03:36,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:03:36,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1697 [2020-10-29 04:03:36,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:36,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:36,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 04:03:36,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:03:36,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 04:03:36,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:36,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:36,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:36,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:36,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:36,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:36,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:03:36,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:36,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:36,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:36,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:36,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:36,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:36,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:03:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:36,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:36,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:36,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 04:03:36,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:36,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-29 04:03:36,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:36,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:36,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 04:03:36,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:03:36,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 04:03:36,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:36,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 04:03:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:36,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:36,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:36,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:36,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:36,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:03:36,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:36,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:36,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:36,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:03:36,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:36,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:36,940 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 2 proven. 256 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:03:36,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455441153] [2020-10-29 04:03:36,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:36,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 04:03:36,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513089996] [2020-10-29 04:03:36,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 04:03:36,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:36,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 04:03:36,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=285, Unknown=0, NotChecked=0, Total=462 [2020-10-29 04:03:36,948 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand 22 states. [2020-10-29 04:03:38,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:38,079 INFO L93 Difference]: Finished difference Result 100 states and 104 transitions. [2020-10-29 04:03:38,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 04:03:38,080 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 66 [2020-10-29 04:03:38,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:38,081 INFO L225 Difference]: With dead ends: 100 [2020-10-29 04:03:38,081 INFO L226 Difference]: Without dead ends: 72 [2020-10-29 04:03:38,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=566, Invalid=1156, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 04:03:38,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-29 04:03:38,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-29 04:03:38,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-29 04:03:38,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2020-10-29 04:03:38,090 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 66 [2020-10-29 04:03:38,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:38,091 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2020-10-29 04:03:38,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 04:03:38,091 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2020-10-29 04:03:38,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 04:03:38,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:38,092 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 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] [2020-10-29 04:03:38,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 04:03:38,092 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:38,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:38,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1912493692, now seen corresponding path program 16 times [2020-10-29 04:03:38,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:38,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321255036] [2020-10-29 04:03:38,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:38,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:38,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:39,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:39,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 04:03:39,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:03:39,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1563 [2020-10-29 04:03:39,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:39,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:39,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 04:03:39,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:03:39,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 04:03:39,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:39,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:39,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:39,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:39,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:39,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:39,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:03:39,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:39,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:39,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:39,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:39,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:39,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:39,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:03:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:39,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:39,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:39,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 04:03:39,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:39,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-29 04:03:39,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:39,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:39,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 04:03:39,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:03:39,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 04:03:39,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:40,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 04:03:40,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:40,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:40,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:40,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:40,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:40,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:03:40,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:40,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:40,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:40,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:03:40,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:40,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:40,373 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 2 proven. 289 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:03:40,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321255036] [2020-10-29 04:03:40,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:40,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 04:03:40,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040779847] [2020-10-29 04:03:40,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 04:03:40,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:40,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 04:03:40,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=310, Unknown=0, NotChecked=0, Total=506 [2020-10-29 04:03:40,374 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand 23 states. [2020-10-29 04:03:41,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:41,651 INFO L93 Difference]: Finished difference Result 102 states and 106 transitions. [2020-10-29 04:03:41,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 04:03:41,652 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 68 [2020-10-29 04:03:41,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:41,653 INFO L225 Difference]: With dead ends: 102 [2020-10-29 04:03:41,653 INFO L226 Difference]: Without dead ends: 74 [2020-10-29 04:03:41,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=625, Invalid=1267, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 04:03:41,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-29 04:03:41,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-29 04:03:41,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-29 04:03:41,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2020-10-29 04:03:41,663 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 68 [2020-10-29 04:03:41,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:41,663 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2020-10-29 04:03:41,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 04:03:41,664 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2020-10-29 04:03:41,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 04:03:41,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:41,664 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 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] [2020-10-29 04:03:41,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 04:03:41,665 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:41,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:41,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1372314466, now seen corresponding path program 17 times [2020-10-29 04:03:41,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:41,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196879322] [2020-10-29 04:03:41,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:41,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:41,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:43,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:43,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 04:03:43,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:03:43,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1767 [2020-10-29 04:03:43,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:43,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:43,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 04:03:43,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:03:43,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 04:03:43,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:43,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:43,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:43,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:43,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:43,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:43,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:03:43,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:43,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:43,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:43,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:43,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:43,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:43,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:03:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:43,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:43,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:43,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 04:03:43,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:43,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-29 04:03:43,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:43,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:43,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 04:03:43,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:03:43,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 04:03:43,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:44,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 04:03:44,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:44,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:44,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:44,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:44,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:44,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:03:44,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:44,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:44,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:44,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:03:44,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:44,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:44,201 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 2 proven. 324 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:03:44,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196879322] [2020-10-29 04:03:44,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:44,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 04:03:44,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435644848] [2020-10-29 04:03:44,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 04:03:44,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:44,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 04:03:44,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=336, Unknown=0, NotChecked=0, Total=552 [2020-10-29 04:03:44,203 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand 24 states. [2020-10-29 04:03:45,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:45,423 INFO L93 Difference]: Finished difference Result 104 states and 108 transitions. [2020-10-29 04:03:45,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 04:03:45,423 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 70 [2020-10-29 04:03:45,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:45,424 INFO L225 Difference]: With dead ends: 104 [2020-10-29 04:03:45,424 INFO L226 Difference]: Without dead ends: 76 [2020-10-29 04:03:45,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=687, Invalid=1383, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 04:03:45,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-29 04:03:45,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-29 04:03:45,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-29 04:03:45,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2020-10-29 04:03:45,433 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 70 [2020-10-29 04:03:45,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:45,433 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2020-10-29 04:03:45,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 04:03:45,433 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2020-10-29 04:03:45,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 04:03:45,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:45,434 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 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] [2020-10-29 04:03:45,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 04:03:45,434 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:45,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:45,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1271991744, now seen corresponding path program 18 times [2020-10-29 04:03:45,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:45,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478928181] [2020-10-29 04:03:45,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:45,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:45,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:47,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:47,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 04:03:47,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:03:47,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1930 [2020-10-29 04:03:47,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:47,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:47,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 04:03:47,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:03:47,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 04:03:47,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:47,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:47,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:47,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:47,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:47,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:47,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:03:47,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:47,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:47,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:47,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:47,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:47,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:47,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:03:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:47,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:47,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:47,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 04:03:47,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:47,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-29 04:03:47,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:47,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:47,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 04:03:47,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:03:47,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 04:03:47,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:48,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 04:03:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:48,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:48,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:48,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:48,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:48,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:03:48,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:48,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:48,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:48,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:03:48,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:48,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:48,212 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 2 proven. 361 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:03:48,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478928181] [2020-10-29 04:03:48,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:48,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 04:03:48,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327921356] [2020-10-29 04:03:48,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 04:03:48,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:48,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 04:03:48,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=363, Unknown=0, NotChecked=0, Total=600 [2020-10-29 04:03:48,214 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand 25 states. [2020-10-29 04:03:49,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:49,693 INFO L93 Difference]: Finished difference Result 106 states and 110 transitions. [2020-10-29 04:03:49,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 04:03:49,696 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 72 [2020-10-29 04:03:49,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:49,697 INFO L225 Difference]: With dead ends: 106 [2020-10-29 04:03:49,697 INFO L226 Difference]: Without dead ends: 78 [2020-10-29 04:03:49,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=752, Invalid=1504, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 04:03:49,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-29 04:03:49,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-29 04:03:49,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-29 04:03:49,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2020-10-29 04:03:49,711 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 72 [2020-10-29 04:03:49,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:49,712 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2020-10-29 04:03:49,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 04:03:49,712 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2020-10-29 04:03:49,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-29 04:03:49,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:49,713 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 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] [2020-10-29 04:03:49,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 04:03:49,713 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:49,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:49,714 INFO L82 PathProgramCache]: Analyzing trace with hash 648863586, now seen corresponding path program 19 times [2020-10-29 04:03:49,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:49,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556684437] [2020-10-29 04:03:49,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:49,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:49,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:51,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:51,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 04:03:51,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:03:51,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2188 [2020-10-29 04:03:51,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:51,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:51,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 04:03:51,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:03:51,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 04:03:51,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:51,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:51,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:51,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:51,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:51,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:51,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:03:51,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:51,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:51,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:51,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:51,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:51,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:51,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:03:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:51,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:52,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:52,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 04:03:52,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:52,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-10-29 04:03:52,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:52,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:52,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 04:03:52,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:03:52,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 04:03:52,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:52,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 04:03:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:52,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:52,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:52,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:52,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:52,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:03:52,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:52,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:52,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:52,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:03:52,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:52,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:52,940 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 2 proven. 400 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:03:52,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556684437] [2020-10-29 04:03:52,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:52,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 04:03:52,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949890705] [2020-10-29 04:03:52,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 04:03:52,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:52,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 04:03:52,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=391, Unknown=0, NotChecked=0, Total=650 [2020-10-29 04:03:52,943 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand 26 states. [2020-10-29 04:03:54,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:54,408 INFO L93 Difference]: Finished difference Result 108 states and 112 transitions. [2020-10-29 04:03:54,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 04:03:54,408 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 74 [2020-10-29 04:03:54,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:54,409 INFO L225 Difference]: With dead ends: 108 [2020-10-29 04:03:54,410 INFO L226 Difference]: Without dead ends: 80 [2020-10-29 04:03:54,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=820, Invalid=1630, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 04:03:54,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-29 04:03:54,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-29 04:03:54,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-29 04:03:54,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2020-10-29 04:03:54,419 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 74 [2020-10-29 04:03:54,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:54,419 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2020-10-29 04:03:54,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 04:03:54,419 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2020-10-29 04:03:54,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 04:03:54,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:54,420 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 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] [2020-10-29 04:03:54,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 04:03:54,420 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:54,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:54,421 INFO L82 PathProgramCache]: Analyzing trace with hash -245101564, now seen corresponding path program 20 times [2020-10-29 04:03:54,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:54,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059442471] [2020-10-29 04:03:54,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:54,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:54,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:56,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:56,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 04:03:56,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:03:56,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2414 [2020-10-29 04:03:56,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:56,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:56,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 04:03:56,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:03:56,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 04:03:56,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:56,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:56,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:56,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:56,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:56,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:56,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:03:56,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:56,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:56,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:56,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:56,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:56,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:56,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:03:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:56,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:57,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:57,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 04:03:57,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:57,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-10-29 04:03:57,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:57,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:57,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 04:03:57,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:03:57,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 04:03:57,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:57,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 04:03:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:57,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:57,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:57,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:57,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:57,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:03:57,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:57,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:57,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:57,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:03:57,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:57,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:57,923 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 2 proven. 441 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:03:57,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059442471] [2020-10-29 04:03:57,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:57,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 04:03:57,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115004409] [2020-10-29 04:03:57,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 04:03:57,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:57,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 04:03:57,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=420, Unknown=0, NotChecked=0, Total=702 [2020-10-29 04:03:57,925 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand 27 states. [2020-10-29 04:03:59,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:59,640 INFO L93 Difference]: Finished difference Result 110 states and 114 transitions. [2020-10-29 04:03:59,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 04:03:59,641 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 76 [2020-10-29 04:03:59,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:59,643 INFO L225 Difference]: With dead ends: 110 [2020-10-29 04:03:59,643 INFO L226 Difference]: Without dead ends: 82 [2020-10-29 04:03:59,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=891, Invalid=1761, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 04:03:59,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-29 04:03:59,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-29 04:03:59,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-29 04:03:59,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2020-10-29 04:03:59,652 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 76 [2020-10-29 04:03:59,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:59,653 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2020-10-29 04:03:59,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 04:03:59,653 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2020-10-29 04:03:59,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 04:03:59,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:59,653 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 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] [2020-10-29 04:03:59,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 04:03:59,654 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:59,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:59,654 INFO L82 PathProgramCache]: Analyzing trace with hash -352151514, now seen corresponding path program 21 times [2020-10-29 04:03:59,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:59,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697961293] [2020-10-29 04:03:59,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:59,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:59,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:02,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:02,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 04:04:02,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:04:02,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2691 [2020-10-29 04:04:02,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:02,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:02,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 04:04:02,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:04:02,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 04:04:02,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:02,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:04:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:02,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:02,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:02,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:04:02,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:02,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:04:02,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:02,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:02,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:04:02,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:04:02,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:04:02,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:02,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:04:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:02,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:02,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:02,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-29 04:04:02,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:02,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-29 04:04:02,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:02,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:02,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 04:04:02,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:04:02,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 04:04:02,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:04,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 04:04:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:04,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:04,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:04,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:04:04,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:04,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:04:04,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:04,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:04:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:04:04,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:04:04,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:04,242 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 2 proven. 484 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:04:04,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697961293] [2020-10-29 04:04:04,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:04:04,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 04:04:04,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506603365] [2020-10-29 04:04:04,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 04:04:04,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:04:04,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 04:04:04,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=450, Unknown=0, NotChecked=0, Total=756 [2020-10-29 04:04:04,244 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 28 states. [2020-10-29 04:04:06,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:04:06,402 INFO L93 Difference]: Finished difference Result 112 states and 116 transitions. [2020-10-29 04:04:06,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 04:04:06,403 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 78 [2020-10-29 04:04:06,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:04:06,404 INFO L225 Difference]: With dead ends: 112 [2020-10-29 04:04:06,404 INFO L226 Difference]: Without dead ends: 84 [2020-10-29 04:04:06,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1009, Invalid=1853, Unknown=0, NotChecked=0, Total=2862 [2020-10-29 04:04:06,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-29 04:04:06,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-29 04:04:06,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-29 04:04:06,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2020-10-29 04:04:06,414 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 78 [2020-10-29 04:04:06,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:04:06,414 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2020-10-29 04:04:06,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 04:04:06,414 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2020-10-29 04:04:06,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 04:04:06,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:04:06,415 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 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] [2020-10-29 04:04:06,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 04:04:06,416 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:04:06,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:04:06,416 INFO L82 PathProgramCache]: Analyzing trace with hash -147938360, now seen corresponding path program 22 times [2020-10-29 04:04:06,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:04:06,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251799986] [2020-10-29 04:04:06,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:04:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:06,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:06,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:09,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:09,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 04:04:09,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:04:09,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2729 [2020-10-29 04:04:09,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:09,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:09,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 04:04:09,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:04:09,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 04:04:09,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:09,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:04:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:09,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:09,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:09,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:04:09,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:09,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:04:09,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:09,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:09,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:04:09,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:04:09,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:04:09,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:09,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:04:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:09,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:09,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:09,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 04:04:09,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:09,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 468 [2020-10-29 04:04:09,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:09,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:09,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 04:04:09,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:04:09,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 04:04:09,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:10,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 04:04:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:10,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:10,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:10,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:04:10,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:10,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:04:10,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:10,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:10,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:04:10,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:04:10,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:04:10,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:10,348 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 2 proven. 529 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:04:10,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251799986] [2020-10-29 04:04:10,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:04:10,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 04:04:10,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223189460] [2020-10-29 04:04:10,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 04:04:10,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:04:10,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 04:04:10,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=481, Unknown=0, NotChecked=0, Total=812 [2020-10-29 04:04:10,351 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 29 states. [2020-10-29 04:04:12,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:04:12,211 INFO L93 Difference]: Finished difference Result 114 states and 118 transitions. [2020-10-29 04:04:12,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 04:04:12,212 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 80 [2020-10-29 04:04:12,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:04:12,214 INFO L225 Difference]: With dead ends: 114 [2020-10-29 04:04:12,214 INFO L226 Difference]: Without dead ends: 86 [2020-10-29 04:04:12,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1042, Invalid=2038, Unknown=0, NotChecked=0, Total=3080 [2020-10-29 04:04:12,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-29 04:04:12,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-29 04:04:12,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-29 04:04:12,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions. [2020-10-29 04:04:12,222 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 80 [2020-10-29 04:04:12,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:04:12,223 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions. [2020-10-29 04:04:12,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 04:04:12,223 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2020-10-29 04:04:12,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 04:04:12,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:04:12,224 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 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] [2020-10-29 04:04:12,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 04:04:12,224 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:04:12,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:04:12,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1467592982, now seen corresponding path program 23 times [2020-10-29 04:04:12,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:04:12,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683452961] [2020-10-29 04:04:12,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:04:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:12,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:12,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:15,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:15,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 04:04:15,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:04:15,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3199 [2020-10-29 04:04:15,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:15,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:15,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 04:04:15,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:04:15,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 04:04:15,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:15,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:04:15,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:15,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:15,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:15,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:04:15,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:15,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:04:15,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:15,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:15,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:04:15,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:04:15,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:04:15,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:15,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:04:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:15,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:15,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:15,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 04:04:15,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:15,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-10-29 04:04:15,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:15,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:15,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 04:04:15,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:04:15,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 04:04:15,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:16,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 04:04:16,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:16,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:16,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:16,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:04:16,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:16,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:04:16,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:16,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:16,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:04:16,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:04:16,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:04:16,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:16,700 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 2 proven. 576 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:04:16,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683452961] [2020-10-29 04:04:16,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:04:16,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 04:04:16,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072700936] [2020-10-29 04:04:16,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 04:04:16,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:04:16,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 04:04:16,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=513, Unknown=0, NotChecked=0, Total=870 [2020-10-29 04:04:16,701 INFO L87 Difference]: Start difference. First operand 85 states and 87 transitions. Second operand 30 states. [2020-10-29 04:04:18,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:04:18,665 INFO L93 Difference]: Finished difference Result 116 states and 120 transitions. [2020-10-29 04:04:18,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 04:04:18,666 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 82 [2020-10-29 04:04:18,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:04:18,667 INFO L225 Difference]: With dead ends: 116 [2020-10-29 04:04:18,667 INFO L226 Difference]: Without dead ends: 88 [2020-10-29 04:04:18,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1122, Invalid=2184, Unknown=0, NotChecked=0, Total=3306 [2020-10-29 04:04:18,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-29 04:04:18,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-29 04:04:18,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-29 04:04:18,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2020-10-29 04:04:18,682 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 82 [2020-10-29 04:04:18,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:04:18,682 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2020-10-29 04:04:18,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 04:04:18,682 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2020-10-29 04:04:18,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-29 04:04:18,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:04:18,683 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 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] [2020-10-29 04:04:18,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 04:04:18,684 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:04:18,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:04:18,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1654634892, now seen corresponding path program 24 times [2020-10-29 04:04:18,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:04:18,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12751241] [2020-10-29 04:04:18,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:04:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:18,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:18,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:22,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:22,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 04:04:22,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:04:22,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3578 [2020-10-29 04:04:22,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:22,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:22,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 04:04:22,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:04:22,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 04:04:22,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:22,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:04:22,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:22,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:22,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:22,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:04:22,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:22,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:04:22,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:22,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:22,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:04:22,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:04:22,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:04:22,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:22,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:04:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:22,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:22,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:22,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 04:04:22,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:22,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 523 [2020-10-29 04:04:22,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:22,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:22,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 04:04:22,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:04:22,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 04:04:22,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:23,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 04:04:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:23,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:23,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:23,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:04:23,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:23,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:04:23,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:23,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:23,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:04:23,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:04:23,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:04:23,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:23,732 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 2 proven. 625 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:04:23,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12751241] [2020-10-29 04:04:23,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:04:23,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 04:04:23,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710107337] [2020-10-29 04:04:23,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 04:04:23,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:04:23,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 04:04:23,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=546, Unknown=0, NotChecked=0, Total=930 [2020-10-29 04:04:23,735 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand 31 states. [2020-10-29 04:04:25,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:04:25,795 INFO L93 Difference]: Finished difference Result 118 states and 122 transitions. [2020-10-29 04:04:25,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 04:04:25,795 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 84 [2020-10-29 04:04:25,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:04:25,797 INFO L225 Difference]: With dead ends: 118 [2020-10-29 04:04:25,797 INFO L226 Difference]: Without dead ends: 90 [2020-10-29 04:04:25,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1205, Invalid=2335, Unknown=0, NotChecked=0, Total=3540 [2020-10-29 04:04:25,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-29 04:04:25,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-29 04:04:25,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-29 04:04:25,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2020-10-29 04:04:25,806 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 84 [2020-10-29 04:04:25,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:04:25,807 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2020-10-29 04:04:25,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 04:04:25,807 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2020-10-29 04:04:25,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-29 04:04:25,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:04:25,808 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 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] [2020-10-29 04:04:25,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 04:04:25,808 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:04:25,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:04:25,808 INFO L82 PathProgramCache]: Analyzing trace with hash -66518098, now seen corresponding path program 25 times [2020-10-29 04:04:25,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:04:25,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81740357] [2020-10-29 04:04:25,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:04:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:25,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:25,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:29,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:29,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 04:04:29,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:04:29,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3694 [2020-10-29 04:04:29,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:29,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:29,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 04:04:29,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:04:29,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 04:04:29,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:29,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:04:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:29,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:29,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:29,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:04:29,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:29,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:04:29,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:29,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:29,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:04:29,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:04:29,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:04:29,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:29,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:04:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:29,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:30,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:30,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 04:04:30,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:30,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 565 [2020-10-29 04:04:30,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:30,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:30,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 04:04:30,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:04:30,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 04:04:30,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:30,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 04:04:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:30,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:30,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:30,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:04:30,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:30,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:04:30,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:30,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:30,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:04:30,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:04:30,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:04:30,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:30,960 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 2 proven. 676 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:04:30,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81740357] [2020-10-29 04:04:30,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:04:30,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 04:04:30,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093175293] [2020-10-29 04:04:30,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 04:04:30,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:04:30,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 04:04:30,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=580, Unknown=0, NotChecked=0, Total=992 [2020-10-29 04:04:30,962 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand 32 states. [2020-10-29 04:04:33,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:04:33,140 INFO L93 Difference]: Finished difference Result 120 states and 124 transitions. [2020-10-29 04:04:33,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 04:04:33,141 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 86 [2020-10-29 04:04:33,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:04:33,143 INFO L225 Difference]: With dead ends: 120 [2020-10-29 04:04:33,143 INFO L226 Difference]: Without dead ends: 92 [2020-10-29 04:04:33,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1291, Invalid=2491, Unknown=0, NotChecked=0, Total=3782 [2020-10-29 04:04:33,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-29 04:04:33,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-29 04:04:33,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-29 04:04:33,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2020-10-29 04:04:33,153 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 86 [2020-10-29 04:04:33,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:04:33,153 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2020-10-29 04:04:33,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 04:04:33,153 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2020-10-29 04:04:33,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 04:04:33,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:04:33,154 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 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] [2020-10-29 04:04:33,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 04:04:33,155 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:04:33,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:04:33,155 INFO L82 PathProgramCache]: Analyzing trace with hash -532132528, now seen corresponding path program 26 times [2020-10-29 04:04:33,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:04:33,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588104250] [2020-10-29 04:04:33,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:04:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:33,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:33,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:37,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:37,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 04:04:37,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:04:37,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3986 [2020-10-29 04:04:37,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:37,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:37,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 04:04:37,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:04:37,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 04:04:37,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:37,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:04:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:37,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:37,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:37,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:04:37,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:37,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:04:37,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:37,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:37,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:04:37,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:04:37,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:04:37,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:37,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:04:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:37,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:37,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:37,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 04:04:37,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:37,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 618 [2020-10-29 04:04:37,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:37,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:37,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 04:04:37,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:04:37,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 04:04:37,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:38,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 04:04:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:38,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:38,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:38,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:04:38,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:38,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:04:38,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:38,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:38,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:04:38,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:04:38,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:04:38,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:38,711 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 2 proven. 729 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:04:38,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588104250] [2020-10-29 04:04:38,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:04:38,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 04:04:38,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219965965] [2020-10-29 04:04:38,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 04:04:38,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:04:38,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 04:04:38,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=441, Invalid=615, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 04:04:38,714 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand 33 states. [2020-10-29 04:04:40,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:04:40,841 INFO L93 Difference]: Finished difference Result 122 states and 126 transitions. [2020-10-29 04:04:40,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 04:04:40,841 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 88 [2020-10-29 04:04:40,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:04:40,842 INFO L225 Difference]: With dead ends: 122 [2020-10-29 04:04:40,843 INFO L226 Difference]: Without dead ends: 94 [2020-10-29 04:04:40,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1380, Invalid=2652, Unknown=0, NotChecked=0, Total=4032 [2020-10-29 04:04:40,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-29 04:04:40,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-29 04:04:40,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-29 04:04:40,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2020-10-29 04:04:40,857 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 88 [2020-10-29 04:04:40,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:04:40,858 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2020-10-29 04:04:40,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 04:04:40,858 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2020-10-29 04:04:40,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-29 04:04:40,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:04:40,859 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 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] [2020-10-29 04:04:40,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 04:04:40,860 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:04:40,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:04:40,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1311000974, now seen corresponding path program 27 times [2020-10-29 04:04:40,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:04:40,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096825347] [2020-10-29 04:04:40,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:04:40,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:40,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:40,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:45,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:45,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 04:04:45,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:04:45,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4414 [2020-10-29 04:04:45,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:45,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:45,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 04:04:45,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:04:45,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 04:04:45,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:45,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:04:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:45,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:45,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:45,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:04:45,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:45,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:04:45,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:45,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:45,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:04:45,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:04:45,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:04:45,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:45,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:04:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:45,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:46,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:46,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 04:04:46,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:46,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 703 [2020-10-29 04:04:46,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:46,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:46,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 04:04:46,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:04:46,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 04:04:46,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:48,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 04:04:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:48,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:48,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:48,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:04:48,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:48,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:04:48,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:48,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:48,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:04:48,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:04:48,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:04:48,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:48,112 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 2 proven. 784 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:04:48,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096825347] [2020-10-29 04:04:48,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:04:48,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 04:04:48,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147968472] [2020-10-29 04:04:48,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 04:04:48,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:04:48,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 04:04:48,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=471, Invalid=651, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 04:04:48,115 INFO L87 Difference]: Start difference. First operand 93 states and 95 transitions. Second operand 34 states. [2020-10-29 04:04:51,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:04:51,125 INFO L93 Difference]: Finished difference Result 124 states and 128 transitions. [2020-10-29 04:04:51,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 04:04:51,132 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 90 [2020-10-29 04:04:51,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:04:51,133 INFO L225 Difference]: With dead ends: 124 [2020-10-29 04:04:51,133 INFO L226 Difference]: Without dead ends: 96 [2020-10-29 04:04:51,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1528, Invalid=2762, Unknown=0, NotChecked=0, Total=4290 [2020-10-29 04:04:51,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-29 04:04:51,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-29 04:04:51,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-29 04:04:51,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2020-10-29 04:04:51,145 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 90 [2020-10-29 04:04:51,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:04:51,145 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2020-10-29 04:04:51,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 04:04:51,145 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2020-10-29 04:04:51,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 04:04:51,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:04:51,146 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 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] [2020-10-29 04:04:51,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 04:04:51,146 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:04:51,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:04:51,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1815699220, now seen corresponding path program 28 times [2020-10-29 04:04:51,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:04:51,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107256697] [2020-10-29 04:04:51,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:04:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:51,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:51,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:55,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:55,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 04:04:55,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:04:55,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4523 [2020-10-29 04:04:55,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:55,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:55,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 04:04:55,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:04:55,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 04:04:55,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:55,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:04:55,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:55,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:55,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:55,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:04:55,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:55,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:04:55,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:55,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:55,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:04:55,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:04:55,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:04:55,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:55,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:04:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:55,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:56,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:56,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 04:04:56,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:56,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 784 [2020-10-29 04:04:56,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:56,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:56,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 04:04:56,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:04:56,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 04:04:56,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:57,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 04:04:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:57,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:57,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:57,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:04:57,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:57,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:04:57,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:57,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:57,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:04:57,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:04:57,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:04:57,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:57,551 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 2 proven. 841 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:04:57,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107256697] [2020-10-29 04:04:57,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:04:57,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-29 04:04:57,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043222474] [2020-10-29 04:04:57,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-29 04:04:57,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:04:57,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-29 04:04:57,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=502, Invalid=688, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 04:04:57,554 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand 35 states. [2020-10-29 04:05:00,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:05:00,000 INFO L93 Difference]: Finished difference Result 126 states and 130 transitions. [2020-10-29 04:05:00,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-29 04:05:00,001 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 92 [2020-10-29 04:05:00,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:05:00,002 INFO L225 Difference]: With dead ends: 126 [2020-10-29 04:05:00,003 INFO L226 Difference]: Without dead ends: 98 [2020-10-29 04:05:00,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1567, Invalid=2989, Unknown=0, NotChecked=0, Total=4556 [2020-10-29 04:05:00,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-29 04:05:00,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-29 04:05:00,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-29 04:05:00,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 99 transitions. [2020-10-29 04:05:00,013 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 99 transitions. Word has length 92 [2020-10-29 04:05:00,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:05:00,014 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 99 transitions. [2020-10-29 04:05:00,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-29 04:05:00,014 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 99 transitions. [2020-10-29 04:05:00,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 04:05:00,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:05:00,015 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 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] [2020-10-29 04:05:00,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 04:05:00,016 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:05:00,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:05:00,016 INFO L82 PathProgramCache]: Analyzing trace with hash 97478454, now seen corresponding path program 29 times [2020-10-29 04:05:00,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:05:00,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6567745] [2020-10-29 04:05:00,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:05:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:05:00,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:00,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:05,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:05:05,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 04:05:05,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:05:05,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 04:05:05,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:05:05,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:05:05,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 04:05:05,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:05:05,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 04:05:05,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:05:05,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:05:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:05:05,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:05,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:05:05,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:05:05,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:05:05,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:05:05,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:05:05,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:05:05,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:05:05,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:05:05,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:05:05,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:05:05,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:05:05,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:05:05,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:05,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:05:05,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 04:05:05,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:05:05,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 865 [2020-10-29 04:05:05,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:05:05,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:05:05,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 04:05:05,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:05:05,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 04:05:05,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:05:08,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 04:05:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:05:08,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:08,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:05:08,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:05:08,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:05:08,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:05:08,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:05:08,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:05:08,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:05:08,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:05:08,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:05:08,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:05:08,327 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 2 proven. 900 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:05:08,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6567745] [2020-10-29 04:05:08,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:05:08,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-29 04:05:08,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256182158] [2020-10-29 04:05:08,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-29 04:05:08,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:05:08,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-29 04:05:08,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=534, Invalid=726, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 04:05:08,328 INFO L87 Difference]: Start difference. First operand 97 states and 99 transitions. Second operand 36 states. [2020-10-29 04:05:11,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:05:11,409 INFO L93 Difference]: Finished difference Result 128 states and 132 transitions. [2020-10-29 04:05:11,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-29 04:05:11,410 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 94 [2020-10-29 04:05:11,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:05:11,412 INFO L225 Difference]: With dead ends: 128 [2020-10-29 04:05:11,412 INFO L226 Difference]: Without dead ends: 100 [2020-10-29 04:05:11,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1725, Invalid=3105, Unknown=0, NotChecked=0, Total=4830 [2020-10-29 04:05:11,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-29 04:05:11,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-29 04:05:11,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-29 04:05:11,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2020-10-29 04:05:11,423 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 94 [2020-10-29 04:05:11,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:05:11,423 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2020-10-29 04:05:11,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-29 04:05:11,423 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2020-10-29 04:05:11,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 04:05:11,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:05:11,424 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 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] [2020-10-29 04:05:11,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 04:05:11,425 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:05:11,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:05:11,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1845236008, now seen corresponding path program 30 times [2020-10-29 04:05:11,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:05:11,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909799420] [2020-10-29 04:05:11,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:05:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:05:11,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:11,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:16,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:05:16,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 04:05:16,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:05:16,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 04:05:16,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:05:16,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:05:16,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 04:05:16,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:05:16,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 04:05:16,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:05:16,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:05:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:05:16,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:16,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:05:16,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:05:16,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:05:16,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:05:16,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:05:16,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:05:16,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:05:16,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:05:16,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:05:16,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:05:16,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:05:16,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:05:16,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:17,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:05:17,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 04:05:17,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:05:17,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 916 [2020-10-29 04:05:17,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:05:17,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:05:17,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 04:05:17,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:05:17,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 04:05:17,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:05:19,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 04:05:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:05:19,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:19,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:05:19,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:05:19,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:05:19,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:05:19,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:05:19,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:05:19,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:05:19,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:05:19,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:05:19,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:05:19,928 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 2 proven. 961 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:05:19,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909799420] [2020-10-29 04:05:19,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:05:19,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-29 04:05:19,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721357921] [2020-10-29 04:05:19,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-29 04:05:19,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:05:19,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-29 04:05:19,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=567, Invalid=765, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 04:05:19,931 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand 37 states. [2020-10-29 04:05:23,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:05:23,174 INFO L93 Difference]: Finished difference Result 130 states and 134 transitions. [2020-10-29 04:05:23,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-29 04:05:23,175 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 96 [2020-10-29 04:05:23,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:05:23,176 INFO L225 Difference]: With dead ends: 130 [2020-10-29 04:05:23,176 INFO L226 Difference]: Without dead ends: 102 [2020-10-29 04:05:23,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1828, Invalid=3284, Unknown=0, NotChecked=0, Total=5112 [2020-10-29 04:05:23,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-29 04:05:23,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-29 04:05:23,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-29 04:05:23,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2020-10-29 04:05:23,188 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 96 [2020-10-29 04:05:23,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:05:23,188 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2020-10-29 04:05:23,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-29 04:05:23,188 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2020-10-29 04:05:23,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-29 04:05:23,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:05:23,190 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 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] [2020-10-29 04:05:23,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 04:05:23,190 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:05:23,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:05:23,190 INFO L82 PathProgramCache]: Analyzing trace with hash -483060230, now seen corresponding path program 31 times [2020-10-29 04:05:23,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:05:23,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407075327] [2020-10-29 04:05:23,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:05:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:05:23,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:23,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:28,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:05:28,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 04:05:28,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:05:28,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 04:05:28,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:05:28,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:05:28,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-29 04:05:28,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:05:28,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 04:05:28,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:05:28,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:05:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:05:28,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:28,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:05:28,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:05:28,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:05:28,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:05:28,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:05:28,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:05:28,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:05:28,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:05:28,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:05:28,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:05:28,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:05:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:05:28,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:29,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:05:29,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 04:05:29,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:05:29,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1177 [2020-10-29 04:05:29,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:05:29,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:05:29,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-29 04:05:29,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:05:29,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 04:05:29,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:05:32,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 04:05:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:05:32,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:32,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:05:32,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:05:32,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:05:32,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:05:32,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:05:32,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:05:32,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:05:32,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:05:32,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:05:32,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:05:32,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 2 proven. 1024 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:05:32,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407075327] [2020-10-29 04:05:32,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:05:32,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-29 04:05:32,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131447777] [2020-10-29 04:05:32,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-29 04:05:32,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:05:32,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-29 04:05:32,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=601, Invalid=805, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 04:05:32,090 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand 38 states. [2020-10-29 04:05:35,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:05:35,635 INFO L93 Difference]: Finished difference Result 132 states and 136 transitions. [2020-10-29 04:05:35,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-29 04:05:35,636 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 98 [2020-10-29 04:05:35,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:05:35,637 INFO L225 Difference]: With dead ends: 132 [2020-10-29 04:05:35,638 INFO L226 Difference]: Without dead ends: 104 [2020-10-29 04:05:35,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1934, Invalid=3468, Unknown=0, NotChecked=0, Total=5402 [2020-10-29 04:05:35,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-29 04:05:35,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-29 04:05:35,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-29 04:05:35,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2020-10-29 04:05:35,648 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 98 [2020-10-29 04:05:35,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:05:35,648 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2020-10-29 04:05:35,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-29 04:05:35,648 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2020-10-29 04:05:35,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 04:05:35,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:05:35,649 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 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] [2020-10-29 04:05:35,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 04:05:35,650 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:05:35,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:05:35,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1397162852, now seen corresponding path program 32 times [2020-10-29 04:05:35,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:05:35,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829061971] [2020-10-29 04:05:35,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:05:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:05:35,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:35,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:40,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:05:40,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 04:05:40,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:05:40,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 04:05:40,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:05:40,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:05:40,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-29 04:05:40,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:05:40,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 04:05:40,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:05:40,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:05:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:05:40,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:40,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:05:40,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:05:40,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:05:40,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:05:40,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:05:40,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:05:40,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:05:40,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:05:40,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:05:40,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:05:40,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:05:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:05:40,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:41,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:05:41,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 04:05:41,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:05:41,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1093 [2020-10-29 04:05:41,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:05:41,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:05:41,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-29 04:05:41,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:05:41,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 04:05:41,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:05:44,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-29 04:05:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:05:44,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:44,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:05:44,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:05:44,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:05:44,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:05:44,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:05:44,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:05:44,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:05:44,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:05:44,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:05:44,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:05:44,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1095 backedges. 2 proven. 1089 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:05:44,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829061971] [2020-10-29 04:05:44,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:05:44,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-29 04:05:44,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948127416] [2020-10-29 04:05:44,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-29 04:05:44,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:05:44,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-29 04:05:44,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=636, Invalid=846, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 04:05:44,711 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand 39 states. [2020-10-29 04:05:48,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:05:48,498 INFO L93 Difference]: Finished difference Result 134 states and 138 transitions. [2020-10-29 04:05:48,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-29 04:05:48,499 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 100 [2020-10-29 04:05:48,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:05:48,500 INFO L225 Difference]: With dead ends: 134 [2020-10-29 04:05:48,500 INFO L226 Difference]: Without dead ends: 106 [2020-10-29 04:05:48,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2043, Invalid=3657, Unknown=0, NotChecked=0, Total=5700 [2020-10-29 04:05:48,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-29 04:05:48,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-29 04:05:48,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-29 04:05:48,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2020-10-29 04:05:48,510 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 100 [2020-10-29 04:05:48,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:05:48,510 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2020-10-29 04:05:48,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-29 04:05:48,511 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2020-10-29 04:05:48,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-29 04:05:48,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:05:48,511 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 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] [2020-10-29 04:05:48,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 04:05:48,511 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:05:48,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:05:48,512 INFO L82 PathProgramCache]: Analyzing trace with hash 618513086, now seen corresponding path program 33 times [2020-10-29 04:05:48,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:05:48,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479151850] [2020-10-29 04:05:48,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:05:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:05:48,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:48,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:53,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:05:53,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 04:05:53,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:05:53,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 04:05:53,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:05:53,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:05:53,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-29 04:05:53,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:05:53,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 04:05:53,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:05:53,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:05:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:05:53,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:53,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:05:53,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:05:53,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:05:53,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:05:53,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:05:53,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:05:53,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:05:53,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:05:53,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:05:53,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:05:53,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:05:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:05:53,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:54,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:05:54,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 04:05:54,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:05:54,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1350 [2020-10-29 04:05:54,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:05:54,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:05:54,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-29 04:05:54,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:05:54,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 04:05:54,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:05:56,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 04:05:56,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:05:56,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:56,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:05:56,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:05:56,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:05:56,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:05:56,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:05:56,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:05:56,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:05:56,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:05:56,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:05:56,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:05:56,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 2 proven. 1156 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:05:56,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479151850] [2020-10-29 04:05:56,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:05:56,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-29 04:05:56,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801520364] [2020-10-29 04:05:56,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-29 04:05:56,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:05:56,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-29 04:05:56,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=888, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 04:05:56,316 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand 40 states. [2020-10-29 04:05:59,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:05:59,307 INFO L93 Difference]: Finished difference Result 136 states and 140 transitions. [2020-10-29 04:05:59,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-29 04:05:59,308 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 102 [2020-10-29 04:05:59,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:05:59,309 INFO L225 Difference]: With dead ends: 136 [2020-10-29 04:05:59,309 INFO L226 Difference]: Without dead ends: 108 [2020-10-29 04:05:59,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 735 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2087, Invalid=3919, Unknown=0, NotChecked=0, Total=6006 [2020-10-29 04:05:59,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-29 04:05:59,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-29 04:05:59,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-29 04:05:59,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2020-10-29 04:05:59,321 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 102 [2020-10-29 04:05:59,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:05:59,321 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2020-10-29 04:05:59,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-29 04:05:59,321 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2020-10-29 04:05:59,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 04:05:59,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:05:59,322 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 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] [2020-10-29 04:05:59,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 04:05:59,322 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:05:59,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:05:59,323 INFO L82 PathProgramCache]: Analyzing trace with hash 652839008, now seen corresponding path program 34 times [2020-10-29 04:05:59,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:05:59,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67985323] [2020-10-29 04:05:59,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:05:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:05:59,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:59,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:04,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:04,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 04:06:04,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:06:04,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 04:06:04,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:04,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:04,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-29 04:06:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:06:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 04:06:04,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:04,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:06:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:04,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:04,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:04,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:06:04,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:04,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:06:04,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:04,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:04,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:06:04,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:04,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:06:04,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:04,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:06:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:04,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:05,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:05,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 04:06:05,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:05,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1211 [2020-10-29 04:06:05,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:05,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:05,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-29 04:06:05,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:06:05,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 04:06:05,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:07,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-29 04:06:07,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:07,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:07,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:07,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:06:07,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:07,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:06:07,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:07,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:07,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:06:07,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:06:07,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:06:07,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:07,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1231 backedges. 2 proven. 1225 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:06:07,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67985323] [2020-10-29 04:06:07,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:06:07,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-29 04:06:07,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203484068] [2020-10-29 04:06:07,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-29 04:06:07,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:06:07,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-29 04:06:07,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=709, Invalid=931, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 04:06:07,044 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand 41 states. [2020-10-29 04:06:10,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:06:10,417 INFO L93 Difference]: Finished difference Result 138 states and 142 transitions. [2020-10-29 04:06:10,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-29 04:06:10,418 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 104 [2020-10-29 04:06:10,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:06:10,419 INFO L225 Difference]: With dead ends: 138 [2020-10-29 04:06:10,419 INFO L226 Difference]: Without dead ends: 110 [2020-10-29 04:06:10,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2200, Invalid=4120, Unknown=0, NotChecked=0, Total=6320 [2020-10-29 04:06:10,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-29 04:06:10,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-29 04:06:10,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-29 04:06:10,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 111 transitions. [2020-10-29 04:06:10,430 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 111 transitions. Word has length 104 [2020-10-29 04:06:10,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:06:10,431 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 111 transitions. [2020-10-29 04:06:10,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-29 04:06:10,431 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 111 transitions. [2020-10-29 04:06:10,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 04:06:10,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:06:10,432 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 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] [2020-10-29 04:06:10,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-29 04:06:10,432 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:06:10,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:06:10,432 INFO L82 PathProgramCache]: Analyzing trace with hash -719688318, now seen corresponding path program 35 times [2020-10-29 04:06:10,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:06:10,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776476637] [2020-10-29 04:06:10,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:06:10,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:10,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:10,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:15,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:15,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 04:06:15,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:06:15,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 04:06:15,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:15,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:15,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-29 04:06:15,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:06:15,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 04:06:15,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:15,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:06:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:15,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:15,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:15,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:06:15,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:15,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:06:15,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:15,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:15,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:06:15,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:15,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:06:15,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:15,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:06:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:15,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:16,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:16,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 04:06:16,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:16,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1285 [2020-10-29 04:06:16,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:16,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:16,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-29 04:06:16,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:06:16,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 04:06:16,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:18,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-29 04:06:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:18,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:18,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:18,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:06:18,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:18,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:06:18,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:18,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:18,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:06:18,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:06:18,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:06:18,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:18,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1302 backedges. 2 proven. 1296 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:06:18,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776476637] [2020-10-29 04:06:18,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:06:18,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-29 04:06:18,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658258303] [2020-10-29 04:06:18,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-29 04:06:18,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:06:18,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-29 04:06:18,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=747, Invalid=975, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 04:06:18,342 INFO L87 Difference]: Start difference. First operand 109 states and 111 transitions. Second operand 42 states. [2020-10-29 04:06:21,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:06:21,833 INFO L93 Difference]: Finished difference Result 140 states and 144 transitions. [2020-10-29 04:06:21,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-29 04:06:21,834 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 106 [2020-10-29 04:06:21,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:06:21,835 INFO L225 Difference]: With dead ends: 140 [2020-10-29 04:06:21,835 INFO L226 Difference]: Without dead ends: 112 [2020-10-29 04:06:21,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2316, Invalid=4326, Unknown=0, NotChecked=0, Total=6642 [2020-10-29 04:06:21,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-29 04:06:21,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-10-29 04:06:21,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-29 04:06:21,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 113 transitions. [2020-10-29 04:06:21,845 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 113 transitions. Word has length 106 [2020-10-29 04:06:21,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:06:21,846 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 113 transitions. [2020-10-29 04:06:21,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-29 04:06:21,846 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 113 transitions. [2020-10-29 04:06:21,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 04:06:21,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:06:21,847 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 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] [2020-10-29 04:06:21,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-29 04:06:21,847 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:06:21,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:06:21,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1163488732, now seen corresponding path program 36 times [2020-10-29 04:06:21,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:06:21,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685976834] [2020-10-29 04:06:21,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:06:21,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:21,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:21,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:26,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:26,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 04:06:26,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:06:26,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 04:06:26,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:26,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:26,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-29 04:06:26,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:06:26,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 04:06:26,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:26,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:06:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:26,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:26,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:26,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:06:26,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:26,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:06:26,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:26,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:26,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:06:26,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:26,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:06:26,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:26,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:06:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:26,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:28,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:28,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 04:06:28,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:28,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1579 [2020-10-29 04:06:28,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:28,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:28,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-29 04:06:28,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:06:28,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 04:06:28,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:30,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-29 04:06:30,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:30,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:30,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:30,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:06:30,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:30,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:06:30,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:30,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:30,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:06:30,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:06:30,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:06:30,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:30,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1375 backedges. 2 proven. 1369 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:06:30,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685976834] [2020-10-29 04:06:30,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:06:30,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-29 04:06:30,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095291116] [2020-10-29 04:06:30,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-29 04:06:30,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:06:30,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-29 04:06:30,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=786, Invalid=1020, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 04:06:30,143 INFO L87 Difference]: Start difference. First operand 111 states and 113 transitions. Second operand 43 states. [2020-10-29 04:06:33,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:06:33,797 INFO L93 Difference]: Finished difference Result 142 states and 146 transitions. [2020-10-29 04:06:33,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-29 04:06:33,798 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 108 [2020-10-29 04:06:33,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:06:33,800 INFO L225 Difference]: With dead ends: 142 [2020-10-29 04:06:33,800 INFO L226 Difference]: Without dead ends: 114 [2020-10-29 04:06:33,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 855 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2435, Invalid=4537, Unknown=0, NotChecked=0, Total=6972 [2020-10-29 04:06:33,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-29 04:06:33,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2020-10-29 04:06:33,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-29 04:06:33,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2020-10-29 04:06:33,808 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 108 [2020-10-29 04:06:33,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:06:33,808 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2020-10-29 04:06:33,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-29 04:06:33,809 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2020-10-29 04:06:33,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-29 04:06:33,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:06:33,809 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 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] [2020-10-29 04:06:33,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-29 04:06:33,810 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:06:33,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:06:33,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1841043014, now seen corresponding path program 37 times [2020-10-29 04:06:33,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:06:33,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063975356] [2020-10-29 04:06:33,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:06:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:33,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:33,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:38,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:38,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 04:06:38,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:06:38,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 04:06:38,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:38,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:38,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-29 04:06:38,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:06:38,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 04:06:38,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:38,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:06:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:38,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:38,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:38,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:06:38,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:38,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:06:38,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:38,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:38,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:06:38,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:06:38,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:06:38,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:38,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 04:06:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:38,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:40,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:40,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 04:06:40,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:40,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1528 [2020-10-29 04:06:40,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:40,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:40,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-29 04:06:40,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:06:40,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 04:06:40,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:43,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 04:06:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:43,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:43,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:43,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:06:43,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:06:43,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:06:43,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:43,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:43,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:06:43,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:06:43,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:06:43,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:06:43,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1450 backedges. 2 proven. 1444 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:06:43,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063975356] [2020-10-29 04:06:43,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:06:43,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-29 04:06:43,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433384532] [2020-10-29 04:06:43,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-29 04:06:43,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:06:43,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-29 04:06:43,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=826, Invalid=1066, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 04:06:43,979 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand 44 states.