/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-crafted/mapsum3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:19:19,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:19:19,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:19:19,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:19:19,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:19:19,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:19:19,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:19:19,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:19:19,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:19:19,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:19:19,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:19:19,942 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:19:19,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:19:19,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:19:19,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:19:19,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:19:19,948 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:19:19,949 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:19:19,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:19:19,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:19:19,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:19:19,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:19:19,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:19:19,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:19:19,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:19:19,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:19:19,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:19:19,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:19:19,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:19:19,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-29 03:19:19,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:19:19,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:19:20,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:19:20,002 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 03:19:20,060 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:19:20,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:19:20,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:19:20,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:19:20,067 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:19:20,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:19:20,068 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:19:20,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:19:20,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:19:20,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:19:20,070 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:19:20,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:19:20,070 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:19:20,070 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:19:20,071 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:19:20,071 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:19:20,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:19:20,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:19:20,071 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:19:20,072 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:19:20,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:19:20,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:19:20,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:19:20,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:19:20,073 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:19:20,073 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:19:20,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:19:20,074 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:19:20,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:19:20,074 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:19:20,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:19:20,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:19:20,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:19:20,525 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:19:20,526 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:19:20,527 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapsum3.i [2020-10-29 03:19:20,621 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2e87414f/facc4fe62bfc49acb3db067bf76c143f/FLAGe4dd5809e [2020-10-29 03:19:21,301 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:19:21,302 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/mapsum3.i [2020-10-29 03:19:21,312 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2e87414f/facc4fe62bfc49acb3db067bf76c143f/FLAGe4dd5809e [2020-10-29 03:19:21,651 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2e87414f/facc4fe62bfc49acb3db067bf76c143f [2020-10-29 03:19:21,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:19:21,663 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:19:21,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:19:21,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:19:21,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:19:21,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:19:21" (1/1) ... [2020-10-29 03:19:21,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cf518d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:21, skipping insertion in model container [2020-10-29 03:19:21,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:19:21" (1/1) ... [2020-10-29 03:19:21,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:19:21,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:19:21,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:19:21,910 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:19:21,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:19:21,951 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:19:21,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:21 WrapperNode [2020-10-29 03:19:21,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:19:21,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:19:21,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:19:21,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:19:21,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:21" (1/1) ... [2020-10-29 03:19:21,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:21" (1/1) ... [2020-10-29 03:19:21,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:21" (1/1) ... [2020-10-29 03:19:21,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:21" (1/1) ... [2020-10-29 03:19:21,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:21" (1/1) ... [2020-10-29 03:19:21,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:21" (1/1) ... [2020-10-29 03:19:21,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:21" (1/1) ... [2020-10-29 03:19:21,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:19:22,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:19:22,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:19:22,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:19:22,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:21" (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 03:19:22,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:19:22,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:19:22,087 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:19:22,087 INFO L138 BoogieDeclarations]: Found implementation of procedure mapsum [2020-10-29 03:19:22,088 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:19:22,088 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:19:22,088 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:19:22,089 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:19:22,089 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:19:22,089 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:19:22,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:19:22,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:19:22,090 INFO L130 BoogieDeclarations]: Found specification of procedure mapsum [2020-10-29 03:19:22,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:19:22,091 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:19:22,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:19:22,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:19:22,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:19:22,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:19:22,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:19:22,525 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:19:22,526 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 03:19:22,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:19:22 BoogieIcfgContainer [2020-10-29 03:19:22,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:19:22,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:19:22,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:19:22,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:19:22,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:19:21" (1/3) ... [2020-10-29 03:19:22,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ba2ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:19:22, skipping insertion in model container [2020-10-29 03:19:22,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:21" (2/3) ... [2020-10-29 03:19:22,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ba2ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:19:22, skipping insertion in model container [2020-10-29 03:19:22,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:19:22" (3/3) ... [2020-10-29 03:19:22,539 INFO L111 eAbstractionObserver]: Analyzing ICFG mapsum3.i [2020-10-29 03:19:22,574 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:19:22,580 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:19:22,598 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:19:22,631 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:19:22,632 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:19:22,632 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:19:22,632 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:19:22,632 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:19:22,632 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:19:22,633 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:19:22,633 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:19:22,661 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-29 03:19:22,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 03:19:22,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:22,671 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 03:19:22,671 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:22,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:22,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1900796497, now seen corresponding path program 1 times [2020-10-29 03:19:22,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:22,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852376627] [2020-10-29 03:19:22,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:22,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:22,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:23,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:23,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:23,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:23,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:24,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:24,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:19:24,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:19:24,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1476 [2020-10-29 03:19:24,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:24,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:24,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:19:24,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:19:24,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 03:19:24,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:19:24,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:24,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:24,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:24,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:24,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:24,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:19:24,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:24,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:24,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:24,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:24,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:24,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:24,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:24,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:24,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:24,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:24,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:19:24,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:24,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 03:19:24,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:24,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:24,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:19:24,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:24,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:19:24,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:24,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 03:19:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:24,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:24,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:24,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:24,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:19:24,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:24,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-29 03:19:24,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:24,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:24,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:19:24,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:24,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:19:24,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:25,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 03:19:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:25,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:25,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:25,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:25,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:19:25,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:25,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 03:19:25,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:25,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:25,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:19:25,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:25,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:19:25,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:25,117 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 03:19:25,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852376627] [2020-10-29 03:19:25,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:19:25,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 03:19:25,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422302057] [2020-10-29 03:19:25,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:19:25,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:25,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:19:25,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:19:25,159 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 11 states. [2020-10-29 03:19:25,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:25,686 INFO L93 Difference]: Finished difference Result 87 states and 129 transitions. [2020-10-29 03:19:25,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:19:25,688 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-10-29 03:19:25,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:25,699 INFO L225 Difference]: With dead ends: 87 [2020-10-29 03:19:25,700 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 03:19:25,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:19:25,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 03:19:25,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 39. [2020-10-29 03:19:25,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 03:19:25,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2020-10-29 03:19:25,762 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 34 [2020-10-29 03:19:25,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:25,762 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2020-10-29 03:19:25,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:19:25,762 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2020-10-29 03:19:25,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 03:19:25,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:25,766 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 03:19:25,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:19:25,767 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:25,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:25,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1502494865, now seen corresponding path program 1 times [2020-10-29 03:19:25,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:25,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80464890] [2020-10-29 03:19:25,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:25,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:25,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:25,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:25,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:25,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:27,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:27,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:19:27,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:27,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1544 [2020-10-29 03:19:27,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:27,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:27,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:19:27,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:19:27,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:19:27,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:27,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:27,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:27,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:27,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:27,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:27,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:19:27,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:27,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:27,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:27,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:27,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:27,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:27,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:27,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:27,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:27,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 03:19:27,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:27,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 03:19:27,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:27,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:27,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:19:27,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:27,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:19:27,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:27,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 03:19:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:27,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:27,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:27,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:27,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:19:27,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:27,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 03:19:27,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:27,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:27,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:19:27,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:27,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:19:27,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:27,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 03:19:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:27,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:27,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:27,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:27,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 03:19:27,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:27,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:19:27,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:27,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:27,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:19:27,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:27,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:19:27,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:27,449 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 03:19:27,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80464890] [2020-10-29 03:19:27,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:27,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 03:19:27,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042243699] [2020-10-29 03:19:27,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:19:27,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:27,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:19:27,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:19:27,454 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand 5 states. [2020-10-29 03:19:27,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:27,594 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2020-10-29 03:19:27,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:19:27,594 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-29 03:19:27,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:27,596 INFO L225 Difference]: With dead ends: 62 [2020-10-29 03:19:27,596 INFO L226 Difference]: Without dead ends: 32 [2020-10-29 03:19:27,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:19:27,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-29 03:19:27,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-29 03:19:27,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-29 03:19:27,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-29 03:19:27,605 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 36 [2020-10-29 03:19:27,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:27,606 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-29 03:19:27,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:19:27,606 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-29 03:19:27,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 03:19:27,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:27,608 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 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 03:19:27,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:19:27,608 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:27,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:27,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1194393741, now seen corresponding path program 2 times [2020-10-29 03:19:27,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:27,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524086692] [2020-10-29 03:19:27,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:27,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:27,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:27,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:27,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:27,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:28,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:32,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:19:32,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:32,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 03:19:32,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:32,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:32,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:19:32,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-29 03:19:32,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:19:32,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:32,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:32,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:32,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:32,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:32,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:32,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:19:32,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:32,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:32,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:32,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:32,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:32,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:32,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:32,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:32,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 03:19:32,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:32,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 03:19:32,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:32,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:32,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:19:32,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:32,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:19:32,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:32,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 03:19:32,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:32,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:32,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 03:19:32,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:32,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 03:19:32,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:32,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:32,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:19:32,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:32,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:19:32,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:32,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 03:19:32,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:32,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:32,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:32,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 03:19:32,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:32,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 03:19:32,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:32,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:32,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:19:32,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:32,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:19:32,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:32,890 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-29 03:19:32,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524086692] [2020-10-29 03:19:32,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:32,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:19:32,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577745518] [2020-10-29 03:19:32,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:19:32,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:32,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:19:32,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:19:32,898 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-10-29 03:19:33,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:33,121 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-29 03:19:33,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:19:33,122 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-10-29 03:19:33,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:33,123 INFO L225 Difference]: With dead ends: 56 [2020-10-29 03:19:33,123 INFO L226 Difference]: Without dead ends: 34 [2020-10-29 03:19:33,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:19:33,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-29 03:19:33,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-29 03:19:33,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 03:19:33,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-29 03:19:33,132 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 46 [2020-10-29 03:19:33,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:33,132 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-29 03:19:33,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:19:33,132 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-29 03:19:33,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 03:19:33,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:33,134 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 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 03:19:33,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:19:33,135 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:33,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:33,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1945310827, now seen corresponding path program 3 times [2020-10-29 03:19:33,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:33,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181637517] [2020-10-29 03:19:33,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:33,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:33,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:33,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:33,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:34,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:38,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:38,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:19:38,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:38,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 03:19:38,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:38,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:38,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:19:38,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-29 03:19:38,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:19:38,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:38,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:38,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:38,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:38,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:38,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:38,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:19:38,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:38,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:38,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:38,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:38,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:38,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:38,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:38,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:38,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:38,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:38,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:38,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 03:19:38,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:38,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 03:19:38,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:38,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:38,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:19:38,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:38,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:19:38,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:38,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 03:19:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:38,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:38,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:38,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:38,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 03:19:38,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:38,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 03:19:38,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:38,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:38,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:19:38,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:38,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:19:38,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:38,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:19:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:38,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:38,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:38,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 03:19:38,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:38,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 03:19:38,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:38,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:38,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:19:38,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:38,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:19:38,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:38,429 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-29 03:19:38,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181637517] [2020-10-29 03:19:38,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:38,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:19:38,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262497246] [2020-10-29 03:19:38,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:19:38,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:38,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:19:38,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:19:38,432 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 7 states. [2020-10-29 03:19:38,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:38,670 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-29 03:19:38,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:19:38,671 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-29 03:19:38,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:38,672 INFO L225 Difference]: With dead ends: 60 [2020-10-29 03:19:38,672 INFO L226 Difference]: Without dead ends: 36 [2020-10-29 03:19:38,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:19:38,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-29 03:19:38,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-29 03:19:38,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-29 03:19:38,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-29 03:19:38,687 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 52 [2020-10-29 03:19:38,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:38,687 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-29 03:19:38,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:19:38,688 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-29 03:19:38,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 03:19:38,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:38,692 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 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 03:19:38,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:19:38,693 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:38,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:38,697 INFO L82 PathProgramCache]: Analyzing trace with hash -2080502327, now seen corresponding path program 4 times [2020-10-29 03:19:38,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:38,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216395641] [2020-10-29 03:19:38,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:38,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:38,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:38,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:38,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:40,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:43,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:43,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 03:19:43,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:43,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:19:43,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:43,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:43,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:19:43,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-29 03:19:43,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:19:43,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:19:43,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:43,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:43,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:43,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:43,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:43,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 03:19:43,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:43,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:43,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:43,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:43,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:43,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:43,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:43,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:43,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:43,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:43,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 03:19:43,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:43,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 03:19:43,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:43,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:43,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:19:43,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:43,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:19:43,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:43,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 03:19:43,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:43,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:43,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:43,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:43,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 03:19:43,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:43,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 03:19:43,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:43,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:43,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:19:43,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:43,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:19:43,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:43,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 03:19:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:43,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:43,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:43,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 03:19:43,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:43,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 03:19:43,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:43,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:43,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:19:43,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:43,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:19:43,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:44,006 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-29 03:19:44,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216395641] [2020-10-29 03:19:44,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:44,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:19:44,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923062311] [2020-10-29 03:19:44,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:19:44,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:44,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:19:44,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:19:44,009 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 8 states. [2020-10-29 03:19:44,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:44,247 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-29 03:19:44,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:19:44,248 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-29 03:19:44,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:44,249 INFO L225 Difference]: With dead ends: 64 [2020-10-29 03:19:44,249 INFO L226 Difference]: Without dead ends: 38 [2020-10-29 03:19:44,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:19:44,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-29 03:19:44,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-29 03:19:44,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-29 03:19:44,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-29 03:19:44,262 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 58 [2020-10-29 03:19:44,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:44,264 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-29 03:19:44,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:19:44,264 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-29 03:19:44,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 03:19:44,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:44,267 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 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 03:19:44,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:19:44,268 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:44,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:44,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1013073575, now seen corresponding path program 5 times [2020-10-29 03:19:44,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:44,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637969806] [2020-10-29 03:19:44,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:44,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:44,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:44,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:44,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:46,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:49,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:49,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 03:19:49,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:49,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 03:19:49,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:49,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:49,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:19:49,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:19:49,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:19:49,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:49,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:49,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:49,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:49,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:49,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:49,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:19:49,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:49,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:49,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:49,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:49,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:49,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:49,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:49,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:49,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:49,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 03:19:49,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:49,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 03:19:49,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:49,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:49,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:19:49,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:49,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:19:49,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:49,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 03:19:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:49,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:49,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:49,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:49,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 03:19:49,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:49,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 03:19:49,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:49,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:49,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:19:49,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:49,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:19:49,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:19:49,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:19:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:49,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:49,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:49,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:49,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 03:19:49,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:49,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 03:19:49,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:49,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:49,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:19:49,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:49,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:19:49,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:49,613 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 75 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-29 03:19:49,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637969806] [2020-10-29 03:19:49,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:49,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:19:49,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075933536] [2020-10-29 03:19:49,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:19:49,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:49,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:19:49,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:19:49,618 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 9 states. [2020-10-29 03:19:49,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:49,888 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-29 03:19:49,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:19:49,889 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-10-29 03:19:49,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:49,890 INFO L225 Difference]: With dead ends: 68 [2020-10-29 03:19:49,890 INFO L226 Difference]: Without dead ends: 40 [2020-10-29 03:19:49,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:19:49,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-29 03:19:49,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-29 03:19:49,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 03:19:49,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-29 03:19:49,902 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 64 [2020-10-29 03:19:49,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:49,903 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-29 03:19:49,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:19:49,903 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-29 03:19:49,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 03:19:49,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:49,906 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 3, 3, 3, 3, 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 03:19:49,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:19:49,910 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:49,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:49,910 INFO L82 PathProgramCache]: Analyzing trace with hash 247996677, now seen corresponding path program 6 times [2020-10-29 03:19:49,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:49,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431907549] [2020-10-29 03:19:49,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:49,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:49,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:49,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:50,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:53,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:54,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:54,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 03:19:54,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:19:54,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:19:54,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:54,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:54,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:19:54,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:19:54,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:19:54,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:19:54,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:54,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:54,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:54,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:54,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:54,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:19:54,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:54,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:54,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:19:54,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:54,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:19:54,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:54,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:19:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:54,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:55,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:55,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 03:19:55,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:55,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 03:19:55,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:55,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:55,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:19:55,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:55,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:19:55,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:55,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 03:19:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:55,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:55,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:55,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:55,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 03:19:55,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:55,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 03:19:55,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:55,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:55,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:19:55,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:55,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:19:55,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:55,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 03:19:55,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:55,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:55,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:55,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:55,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 03:19:55,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:55,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 03:19:55,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:55,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:55,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:19:55,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:19:55,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:19:55,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:55,305 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 108 proven. 216 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-29 03:19:55,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431907549] [2020-10-29 03:19:55,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:55,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:19:55,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280660367] [2020-10-29 03:19:55,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:19:55,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:55,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:19:55,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:19:55,309 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 10 states. [2020-10-29 03:19:55,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:55,668 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-29 03:19:55,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:19:55,669 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-10-29 03:19:55,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:55,670 INFO L225 Difference]: With dead ends: 72 [2020-10-29 03:19:55,670 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 03:19:55,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:19:55,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 03:19:55,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-29 03:19:55,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 03:19:55,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-29 03:19:55,685 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 70 [2020-10-29 03:19:55,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:55,685 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-29 03:19:55,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:19:55,686 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-29 03:19:55,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 03:19:55,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:55,690 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 3, 3, 3, 3, 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 03:19:55,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:19:55,691 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:55,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:55,691 INFO L82 PathProgramCache]: Analyzing trace with hash 258997475, now seen corresponding path program 7 times [2020-10-29 03:19:55,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:55,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866989149] [2020-10-29 03:19:55,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:55,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:55,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:55,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:55,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:00,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:00,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:00,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 03:20:00,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:20:00,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:20:00,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:00,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:00,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:20:00,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-29 03:20:00,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:20:00,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:00,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:00,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:00,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:00,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:00,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:00,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:20:00,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:00,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:00,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:00,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:00,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:00,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:00,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:00,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:00,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:00,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:00,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 03:20:00,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:00,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 03:20:00,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:00,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:00,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:20:00,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:00,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:20:00,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:00,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 03:20:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:00,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:00,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:01,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:01,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 03:20:01,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:01,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-29 03:20:01,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:01,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:01,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:20:01,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:01,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:20:01,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:01,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 03:20:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:01,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:01,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:01,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 03:20:01,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:01,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 03:20:01,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:01,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:01,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:20:01,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:01,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:20:01,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:01,124 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 147 proven. 294 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-29 03:20:01,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866989149] [2020-10-29 03:20:01,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:01,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:20:01,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392303806] [2020-10-29 03:20:01,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:20:01,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:01,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:20:01,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:20:01,129 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 11 states. [2020-10-29 03:20:01,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:01,546 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-29 03:20:01,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:20:01,553 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-10-29 03:20:01,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:01,554 INFO L225 Difference]: With dead ends: 76 [2020-10-29 03:20:01,554 INFO L226 Difference]: Without dead ends: 44 [2020-10-29 03:20:01,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:20:01,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-29 03:20:01,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-29 03:20:01,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-29 03:20:01,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-29 03:20:01,566 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 76 [2020-10-29 03:20:01,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:01,567 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-29 03:20:01,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:20:01,567 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-29 03:20:01,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 03:20:01,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:01,570 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 3, 3, 3, 3, 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 03:20:01,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:20:01,571 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:01,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:01,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1798453825, now seen corresponding path program 8 times [2020-10-29 03:20:01,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:01,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472228742] [2020-10-29 03:20:01,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:01,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:01,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:01,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:01,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:06,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:06,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:06,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 03:20:06,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:20:06,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 03:20:06,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:06,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:06,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:20:06,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:20:06,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:20:06,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:06,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:06,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:06,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:06,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:06,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:06,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:20:06,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:06,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:06,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:06,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:06,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:06,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:06,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:06,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:06,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:06,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 03:20:06,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:06,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 03:20:06,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:06,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:06,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:20:06,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:06,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:20:06,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:06,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:20:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:06,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:06,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:06,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:06,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 03:20:06,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:06,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-29 03:20:06,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:06,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:06,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:20:06,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:06,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:20:06,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:06,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 03:20:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:06,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:06,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:07,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:07,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 03:20:07,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:07,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-29 03:20:07,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:07,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:07,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:20:07,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:07,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:20:07,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:07,106 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 192 proven. 384 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-29 03:20:07,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472228742] [2020-10-29 03:20:07,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:07,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:20:07,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254100428] [2020-10-29 03:20:07,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:20:07,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:07,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:20:07,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:20:07,109 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 12 states. [2020-10-29 03:20:07,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:07,599 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-29 03:20:07,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:20:07,600 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-10-29 03:20:07,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:07,602 INFO L225 Difference]: With dead ends: 80 [2020-10-29 03:20:07,602 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 03:20:07,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:20:07,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 03:20:07,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-29 03:20:07,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 03:20:07,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-29 03:20:07,610 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 82 [2020-10-29 03:20:07,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:07,611 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-29 03:20:07,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:20:07,611 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-29 03:20:07,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 03:20:07,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:07,612 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 3, 3, 3, 3, 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 03:20:07,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:20:07,612 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:07,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:07,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1568618783, now seen corresponding path program 9 times [2020-10-29 03:20:07,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:07,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401732599] [2020-10-29 03:20:07,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:07,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:07,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:07,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:07,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:12,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:12,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 03:20:12,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:12,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:20:12,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:12,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:12,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:20:12,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:20:12,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:20:12,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:12,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:12,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:12,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:12,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:12,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:12,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:12,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:12,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:12,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:12,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:12,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:12,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:12,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:12,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:12,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:12,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 03:20:12,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:12,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 03:20:12,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:12,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:12,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:20:12,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:12,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:20:12,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:12,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 03:20:12,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:12,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:12,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:12,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:12,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 03:20:12,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:12,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 03:20:12,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:12,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:12,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:20:12,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:12,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:20:12,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:13,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 03:20:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:13,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:13,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:13,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:13,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 03:20:13,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:13,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 03:20:13,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:13,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:13,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:20:13,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:13,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:20:13,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:13,113 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 243 proven. 486 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-29 03:20:13,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401732599] [2020-10-29 03:20:13,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:13,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:20:13,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721204782] [2020-10-29 03:20:13,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:20:13,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:13,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:20:13,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:20:13,116 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 13 states. [2020-10-29 03:20:13,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:13,638 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-29 03:20:13,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:20:13,639 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 88 [2020-10-29 03:20:13,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:13,640 INFO L225 Difference]: With dead ends: 84 [2020-10-29 03:20:13,640 INFO L226 Difference]: Without dead ends: 48 [2020-10-29 03:20:13,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:20:13,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-29 03:20:13,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-29 03:20:13,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 03:20:13,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-29 03:20:13,660 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 88 [2020-10-29 03:20:13,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:13,661 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-29 03:20:13,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:20:13,661 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-29 03:20:13,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 03:20:13,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:13,662 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 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 03:20:13,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:20:13,664 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:13,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:13,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1503700611, now seen corresponding path program 10 times [2020-10-29 03:20:13,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:13,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360558882] [2020-10-29 03:20:13,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:13,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:13,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:13,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:13,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:18,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:18,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 03:20:18,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:18,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:20:18,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:18,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:18,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:20:18,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:20:18,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:20:18,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:18,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:18,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:18,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:18,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:18,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:18,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:18,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:18,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:18,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:18,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:18,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:18,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:18,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:18,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:18,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:18,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 03:20:18,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:18,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 03:20:18,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:18,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:18,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:20:18,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:18,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:20:18,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:18,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 03:20:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:18,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:18,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:19,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:19,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 03:20:19,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:19,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-29 03:20:19,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:19,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:19,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:20:19,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:19,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:20:19,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:19,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 03:20:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:19,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:19,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:19,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:19,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 03:20:19,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:19,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-29 03:20:19,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:19,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:19,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:20:19,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:19,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:20:19,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:19,226 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 300 proven. 600 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 03:20:19,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360558882] [2020-10-29 03:20:19,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:19,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:20:19,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120180745] [2020-10-29 03:20:19,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:20:19,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:19,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:20:19,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:20:19,228 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 14 states. [2020-10-29 03:20:19,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:19,810 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-10-29 03:20:19,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:20:19,811 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 94 [2020-10-29 03:20:19,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:19,812 INFO L225 Difference]: With dead ends: 88 [2020-10-29 03:20:19,812 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 03:20:19,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:20:19,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 03:20:19,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-29 03:20:19,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-29 03:20:19,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-29 03:20:19,821 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 94 [2020-10-29 03:20:19,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:19,821 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-29 03:20:19,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:20:19,821 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-29 03:20:19,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 03:20:19,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:19,822 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 3, 3, 3, 3, 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 03:20:19,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:20:19,822 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:19,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:19,823 INFO L82 PathProgramCache]: Analyzing trace with hash -2139948197, now seen corresponding path program 11 times [2020-10-29 03:20:19,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:19,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306661861] [2020-10-29 03:20:19,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:19,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:19,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:19,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:19,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:24,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:24,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 03:20:24,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:24,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:20:24,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:24,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:24,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:20:24,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:20:24,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:20:24,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:24,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:24,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:24,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:24,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:24,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:24,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:20:24,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:24,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:24,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:24,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:24,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:24,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:24,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:24,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:24,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:24,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 03:20:24,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:24,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 03:20:24,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:24,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:24,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:20:24,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:24,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:20:24,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:25,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 03:20:25,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:25,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:25,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:25,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:25,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 03:20:25,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:25,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-29 03:20:25,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:25,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:25,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:20:25,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:25,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:20:25,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:25,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 03:20:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:25,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:25,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:25,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:25,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 03:20:25,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:25,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-29 03:20:25,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:25,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:25,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:20:25,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:25,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:20:25,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:25,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 363 proven. 726 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-29 03:20:25,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306661861] [2020-10-29 03:20:25,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:25,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:20:25,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511010377] [2020-10-29 03:20:25,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:20:25,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:25,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:20:25,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:20:25,538 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 15 states. [2020-10-29 03:20:26,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:26,262 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2020-10-29 03:20:26,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:20:26,262 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 100 [2020-10-29 03:20:26,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:26,264 INFO L225 Difference]: With dead ends: 92 [2020-10-29 03:20:26,264 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 03:20:26,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:20:26,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 03:20:26,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-29 03:20:26,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-29 03:20:26,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-29 03:20:26,279 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 100 [2020-10-29 03:20:26,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:26,279 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-29 03:20:26,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:20:26,279 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-29 03:20:26,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 03:20:26,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:26,284 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 3, 3, 3, 3, 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 03:20:26,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:20:26,284 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:26,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:26,285 INFO L82 PathProgramCache]: Analyzing trace with hash 384990905, now seen corresponding path program 12 times [2020-10-29 03:20:26,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:26,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422768386] [2020-10-29 03:20:26,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:26,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:26,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:26,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:26,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:31,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:31,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 03:20:31,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:31,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:20:31,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:31,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:31,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:20:31,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-29 03:20:31,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:20:31,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:31,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:31,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:31,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:31,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:31,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:31,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:31,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:31,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:31,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:31,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:31,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:31,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:31,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:31,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:20:31,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:31,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-29 03:20:31,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:31,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:31,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:20:31,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:31,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:20:31,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:31,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 03:20:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:31,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:32,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:32,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:20:32,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:32,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-29 03:20:32,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:32,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:32,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:20:32,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:32,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:20:32,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:32,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 03:20:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:32,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:32,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:32,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:32,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:20:32,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:32,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-29 03:20:32,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:32,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:32,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:20:32,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:32,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:20:32,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:32,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 432 proven. 864 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-29 03:20:32,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422768386] [2020-10-29 03:20:32,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:32,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:20:32,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843045094] [2020-10-29 03:20:32,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:20:32,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:32,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:20:32,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:20:32,368 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 16 states. [2020-10-29 03:20:32,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:32,994 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2020-10-29 03:20:32,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:20:32,995 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 106 [2020-10-29 03:20:32,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:32,995 INFO L225 Difference]: With dead ends: 96 [2020-10-29 03:20:32,996 INFO L226 Difference]: Without dead ends: 54 [2020-10-29 03:20:32,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:20:32,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-29 03:20:33,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-29 03:20:33,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-29 03:20:33,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-29 03:20:33,011 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 106 [2020-10-29 03:20:33,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:33,012 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-29 03:20:33,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:20:33,012 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-29 03:20:33,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-29 03:20:33,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:33,013 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 3, 3, 3, 3, 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 03:20:33,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:20:33,013 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:33,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:33,014 INFO L82 PathProgramCache]: Analyzing trace with hash 2075018135, now seen corresponding path program 13 times [2020-10-29 03:20:33,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:33,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871052579] [2020-10-29 03:20:33,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:33,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:33,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:33,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:33,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:38,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:38,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 03:20:38,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:38,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:20:38,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:38,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:38,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:20:38,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-29 03:20:38,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:20:38,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:38,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:38,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:38,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:38,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:38,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:38,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:38,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:38,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:38,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:38,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:38,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:38,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:38,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:38,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:38,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:38,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:38,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 03:20:38,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:38,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-29 03:20:38,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:38,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:38,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:20:38,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:38,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:20:38,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:38,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 03:20:38,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:38,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:38,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:38,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 03:20:38,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:38,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-29 03:20:38,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:38,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:38,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:20:38,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:38,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:20:38,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:38,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 03:20:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:38,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:38,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:38,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:38,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 03:20:38,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:38,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-29 03:20:38,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:38,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:38,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:20:38,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:38,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:20:38,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:38,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1614 backedges. 507 proven. 1014 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-29 03:20:38,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871052579] [2020-10-29 03:20:38,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:38,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:20:38,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249861857] [2020-10-29 03:20:38,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:20:38,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:38,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:20:38,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:20:38,882 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 17 states. [2020-10-29 03:20:39,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:39,623 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2020-10-29 03:20:39,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:20:39,624 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 112 [2020-10-29 03:20:39,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:39,625 INFO L225 Difference]: With dead ends: 100 [2020-10-29 03:20:39,625 INFO L226 Difference]: Without dead ends: 56 [2020-10-29 03:20:39,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:20:39,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-29 03:20:39,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-29 03:20:39,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 03:20:39,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-29 03:20:39,633 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 112 [2020-10-29 03:20:39,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:39,634 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-29 03:20:39,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:20:39,634 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-29 03:20:39,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-29 03:20:39,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:39,635 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 3, 3, 3, 3, 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 03:20:39,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:20:39,636 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:39,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:39,636 INFO L82 PathProgramCache]: Analyzing trace with hash 487500277, now seen corresponding path program 14 times [2020-10-29 03:20:39,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:39,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878101037] [2020-10-29 03:20:39,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:39,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:39,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:39,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:39,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:44,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:44,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 03:20:44,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:44,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 03:20:44,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:44,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:44,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:20:44,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:20:44,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:20:44,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:44,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:44,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:44,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:44,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:44,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:44,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:44,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:44,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:44,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:44,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:44,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:44,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:44,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:44,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:44,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:44,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:44,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 03:20:44,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:44,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-29 03:20:44,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:44,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:44,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:20:44,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:44,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:20:44,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:45,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 03:20:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:45,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:45,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:45,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:45,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 03:20:45,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:45,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-29 03:20:45,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:45,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:45,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:20:45,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:45,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:20:45,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:45,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 03:20:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:45,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:45,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:45,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:45,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 03:20:45,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:45,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-29 03:20:45,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:45,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:45,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:20:45,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:45,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:20:45,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:45,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 588 proven. 1176 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-29 03:20:45,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878101037] [2020-10-29 03:20:45,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:45,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:20:45,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799472327] [2020-10-29 03:20:45,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:20:45,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:45,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:20:45,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:20:45,452 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 18 states. [2020-10-29 03:20:46,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:46,166 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2020-10-29 03:20:46,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:20:46,167 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 118 [2020-10-29 03:20:46,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:46,168 INFO L225 Difference]: With dead ends: 104 [2020-10-29 03:20:46,168 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 03:20:46,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:20:46,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 03:20:46,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-29 03:20:46,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 03:20:46,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-29 03:20:46,176 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 118 [2020-10-29 03:20:46,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:46,177 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-29 03:20:46,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:20:46,177 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-29 03:20:46,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-29 03:20:46,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:46,178 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 3, 3, 3, 3, 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 03:20:46,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:20:46,178 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:46,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:46,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1139535405, now seen corresponding path program 15 times [2020-10-29 03:20:46,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:46,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64582711] [2020-10-29 03:20:46,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:46,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:46,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:46,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:46,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:51,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:51,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 03:20:51,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:51,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:20:51,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:51,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:51,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:20:51,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:20:51,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:20:51,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:51,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:51,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:51,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:51,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:51,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:51,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:20:51,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:51,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:51,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:51,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:51,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:51,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:51,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:51,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:51,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:51,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:20:51,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:51,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-29 03:20:51,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:51,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:51,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:20:51,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:51,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:20:51,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:51,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 03:20:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:51,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:51,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:51,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:51,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:20:51,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:51,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-29 03:20:51,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:51,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:51,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:20:51,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:51,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:20:51,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:51,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 03:20:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:51,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:51,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:52,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:52,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:20:52,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:52,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-29 03:20:52,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:52,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:52,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:20:52,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:52,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:20:52,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:52,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2130 backedges. 675 proven. 1350 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-29 03:20:52,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64582711] [2020-10-29 03:20:52,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:52,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:20:52,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49416897] [2020-10-29 03:20:52,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:20:52,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:52,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:20:52,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:20:52,025 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 19 states. [2020-10-29 03:20:52,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:52,849 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2020-10-29 03:20:52,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:20:52,851 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 124 [2020-10-29 03:20:52,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:52,852 INFO L225 Difference]: With dead ends: 108 [2020-10-29 03:20:52,852 INFO L226 Difference]: Without dead ends: 60 [2020-10-29 03:20:52,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:20:52,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-29 03:20:52,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-29 03:20:52,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-29 03:20:52,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-29 03:20:52,860 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 124 [2020-10-29 03:20:52,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:52,860 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-29 03:20:52,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:20:52,860 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-29 03:20:52,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-29 03:20:52,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:52,862 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 3, 3, 3, 3, 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 03:20:52,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:20:52,862 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:52,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:52,863 INFO L82 PathProgramCache]: Analyzing trace with hash -497624271, now seen corresponding path program 16 times [2020-10-29 03:20:52,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:52,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088202480] [2020-10-29 03:20:52,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:52,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:52,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:52,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:52,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:57,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:57,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 03:20:57,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:20:57,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 03:20:57,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:57,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:57,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:20:57,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:20:57,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:20:57,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:57,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:20:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:57,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:57,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:57,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:20:57,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:57,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:20:57,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:57,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:57,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:20:57,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:20:57,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:20:57,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:57,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:20:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:57,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:58,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:58,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:20:58,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:20:58,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-29 03:20:58,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:58,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:58,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:20:58,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:58,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:20:58,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:58,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 03:20:58,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:58,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:58,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:58,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:58,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:20:58,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:58,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-29 03:20:58,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:58,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:58,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:20:58,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:58,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:20:58,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:58,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 03:20:58,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:58,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:58,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:58,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:20:58,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:20:58,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:20:58,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-29 03:20:58,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:20:58,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:20:58,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:20:58,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:20:58,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:20:58,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:20:58,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 768 proven. 1536 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-29 03:20:58,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088202480] [2020-10-29 03:20:58,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:20:58,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:20:58,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687222663] [2020-10-29 03:20:58,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:20:58,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:20:58,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:20:58,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:20:58,845 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 20 states. [2020-10-29 03:20:59,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:20:59,759 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2020-10-29 03:20:59,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:20:59,759 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 130 [2020-10-29 03:20:59,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:20:59,761 INFO L225 Difference]: With dead ends: 112 [2020-10-29 03:20:59,761 INFO L226 Difference]: Without dead ends: 62 [2020-10-29 03:20:59,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:20:59,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-29 03:20:59,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-29 03:20:59,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-29 03:20:59,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-29 03:20:59,768 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 130 [2020-10-29 03:20:59,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:20:59,769 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-29 03:20:59,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:20:59,769 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-29 03:20:59,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-29 03:20:59,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:20:59,771 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 3, 3, 3, 3, 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 03:20:59,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:20:59,771 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:20:59,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:20:59,771 INFO L82 PathProgramCache]: Analyzing trace with hash -670603761, now seen corresponding path program 17 times [2020-10-29 03:20:59,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:20:59,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346768073] [2020-10-29 03:20:59,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:20:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:20:59,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:59,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:59,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:20:59,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:04,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:04,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 03:21:04,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:04,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:21:04,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:04,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:04,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:21:04,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:21:04,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:21:04,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:04,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:04,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:04,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:04,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:04,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:04,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:21:04,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:04,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:04,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:04,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:04,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:04,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:04,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:04,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:05,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:05,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:21:05,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:05,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-29 03:21:05,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:05,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:05,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:21:05,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:05,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:21:05,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:05,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 03:21:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:05,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:05,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:05,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:05,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:21:05,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:05,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-29 03:21:05,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:05,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:05,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:21:05,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:05,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:21:05,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:05,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-29 03:21:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:05,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:05,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:05,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:05,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:21:05,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:05,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-29 03:21:05,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:05,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:05,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:21:05,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:05,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:21:05,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:05,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2718 backedges. 867 proven. 1734 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-29 03:21:05,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346768073] [2020-10-29 03:21:05,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:05,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:21:05,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686035710] [2020-10-29 03:21:05,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:21:05,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:05,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:21:05,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:21:05,958 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 21 states. [2020-10-29 03:21:06,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:06,903 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-10-29 03:21:06,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:21:06,906 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 136 [2020-10-29 03:21:06,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:06,907 INFO L225 Difference]: With dead ends: 116 [2020-10-29 03:21:06,908 INFO L226 Difference]: Without dead ends: 64 [2020-10-29 03:21:06,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:21:06,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-29 03:21:06,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-29 03:21:06,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 03:21:06,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-29 03:21:06,915 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 136 [2020-10-29 03:21:06,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:06,916 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-29 03:21:06,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:21:06,916 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-29 03:21:06,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-29 03:21:06,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:06,917 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 3, 3, 3, 3, 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 03:21:06,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:21:06,918 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:06,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:06,918 INFO L82 PathProgramCache]: Analyzing trace with hash 435032685, now seen corresponding path program 18 times [2020-10-29 03:21:06,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:06,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893074079] [2020-10-29 03:21:06,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:06,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:06,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:06,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:06,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:11,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:11,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 03:21:11,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:11,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 03:21:11,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:11,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:11,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:21:11,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:21:11,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:21:11,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:11,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:11,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:11,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:11,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:11,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:11,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:11,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:21:11,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:11,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:11,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:11,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:11,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:11,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:11,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:12,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:12,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:12,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 03:21:12,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:12,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-29 03:21:12,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:12,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:12,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:21:12,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:12,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:21:12,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:12,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 03:21:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:12,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:12,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:12,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:12,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 03:21:12,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:12,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-29 03:21:12,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:12,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:12,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:21:12,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:12,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:21:12,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:12,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 03:21:12,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:12,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:12,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:13,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:13,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 03:21:13,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:13,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-29 03:21:13,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:13,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:13,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:21:13,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:13,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:21:13,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:13,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3039 backedges. 972 proven. 1944 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-29 03:21:13,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893074079] [2020-10-29 03:21:13,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:13,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:21:13,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743612763] [2020-10-29 03:21:13,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:21:13,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:13,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:21:13,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:21:13,217 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 22 states. [2020-10-29 03:21:14,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:14,221 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2020-10-29 03:21:14,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:21:14,223 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 142 [2020-10-29 03:21:14,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:14,224 INFO L225 Difference]: With dead ends: 120 [2020-10-29 03:21:14,224 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 03:21:14,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:21:14,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 03:21:14,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-29 03:21:14,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-29 03:21:14,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-29 03:21:14,239 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 142 [2020-10-29 03:21:14,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:14,240 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-29 03:21:14,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:21:14,240 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-29 03:21:14,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-29 03:21:14,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:14,242 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 3, 3, 3, 3, 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 03:21:14,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:21:14,242 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:14,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:14,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1332428875, now seen corresponding path program 19 times [2020-10-29 03:21:14,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:14,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340772948] [2020-10-29 03:21:14,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:14,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:14,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:14,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:14,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:19,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:19,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-29 03:21:19,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:19,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:21:19,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:19,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:19,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:21:19,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:21:19,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:21:19,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:19,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:19,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:19,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:19,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:19,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:19,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:21:19,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:19,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:19,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:19,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:19,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:19,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:19,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:19,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:19,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:19,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:21:19,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:19,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-29 03:21:19,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:19,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:19,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:21:19,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:19,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:21:19,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:19,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 03:21:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:19,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:19,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:20,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:20,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:21:20,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:20,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 501 [2020-10-29 03:21:20,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:20,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:20,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:21:20,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:20,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:21:20,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:20,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 03:21:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:20,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:20,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:20,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:20,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:21:20,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:20,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-29 03:21:20,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:20,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:20,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:21:20,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:20,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:21:20,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:20,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3378 backedges. 1083 proven. 2166 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-29 03:21:20,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340772948] [2020-10-29 03:21:20,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:20,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:21:20,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128312413] [2020-10-29 03:21:20,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:21:20,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:20,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:21:20,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:21:20,825 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 23 states. [2020-10-29 03:21:21,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:21,886 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-10-29 03:21:21,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:21:21,887 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 148 [2020-10-29 03:21:21,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:21,888 INFO L225 Difference]: With dead ends: 124 [2020-10-29 03:21:21,889 INFO L226 Difference]: Without dead ends: 68 [2020-10-29 03:21:21,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 03:21:21,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-29 03:21:21,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-29 03:21:21,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 03:21:21,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-29 03:21:21,896 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 148 [2020-10-29 03:21:21,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:21,896 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-29 03:21:21,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:21:21,897 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-29 03:21:21,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-29 03:21:21,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:21,899 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 3, 3, 3, 3, 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 03:21:21,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:21:21,899 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:21,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:21,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1065922647, now seen corresponding path program 20 times [2020-10-29 03:21:21,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:21,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918221227] [2020-10-29 03:21:21,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:21,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:21,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:21,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:22,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:26,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:26,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-29 03:21:26,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:26,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:21:26,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:26,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:21:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:21:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:21:26,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:26,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:26,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:26,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:26,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:26,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:26,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:21:26,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:26,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:26,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:26,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:26,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:26,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:26,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:26,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:27,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:27,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:21:27,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:27,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-29 03:21:27,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:27,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:27,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:21:27,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:27,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:21:27,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:27,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 03:21:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:27,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:27,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:28,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:28,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:21:28,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:28,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 488 [2020-10-29 03:21:28,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:28,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:28,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:21:28,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:28,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:21:28,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:28,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 03:21:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:28,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:28,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:28,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:28,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:21:28,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:28,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-29 03:21:28,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:28,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:28,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:21:28,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:28,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:21:28,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:28,538 INFO L134 CoverageAnalysis]: Checked inductivity of 3735 backedges. 1200 proven. 2400 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-29 03:21:28,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918221227] [2020-10-29 03:21:28,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:28,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:21:28,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175531272] [2020-10-29 03:21:28,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:21:28,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:28,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:21:28,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:21:28,540 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 24 states. [2020-10-29 03:21:29,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:29,713 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2020-10-29 03:21:29,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:21:29,714 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 154 [2020-10-29 03:21:29,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:29,716 INFO L225 Difference]: With dead ends: 128 [2020-10-29 03:21:29,716 INFO L226 Difference]: Without dead ends: 70 [2020-10-29 03:21:29,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 03:21:29,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-29 03:21:29,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-29 03:21:29,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-29 03:21:29,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-29 03:21:29,724 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 154 [2020-10-29 03:21:29,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:29,724 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-29 03:21:29,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:21:29,724 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-29 03:21:29,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 03:21:29,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:29,725 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 3, 3, 3, 3, 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 03:21:29,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:21:29,726 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:29,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:29,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1268949127, now seen corresponding path program 21 times [2020-10-29 03:21:29,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:29,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823314792] [2020-10-29 03:21:29,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:29,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:29,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:29,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:29,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:34,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:34,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 03:21:34,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:34,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 03:21:34,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:34,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:34,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:21:34,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:21:34,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:21:34,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:34,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:34,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:34,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:34,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:34,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:34,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:21:34,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:34,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:34,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:34,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:34,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:34,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:34,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:34,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:34,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:35,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:35,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:21:35,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:35,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-29 03:21:35,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:35,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:35,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:21:35,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:35,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:21:35,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:35,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 03:21:35,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:35,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:35,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:35,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:35,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:21:35,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:35,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-10-29 03:21:35,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:35,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:35,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:21:35,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:35,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:21:35,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:35,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-29 03:21:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:35,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:35,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:36,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:36,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:21:36,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:36,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-10-29 03:21:36,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:36,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:36,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:21:36,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:36,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:21:36,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:36,386 INFO L134 CoverageAnalysis]: Checked inductivity of 4110 backedges. 1323 proven. 2646 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-29 03:21:36,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823314792] [2020-10-29 03:21:36,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:36,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:21:36,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309224208] [2020-10-29 03:21:36,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:21:36,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:36,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:21:36,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:21:36,388 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 25 states. [2020-10-29 03:21:37,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:37,598 INFO L93 Difference]: Finished difference Result 132 states and 142 transitions. [2020-10-29 03:21:37,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:21:37,598 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 160 [2020-10-29 03:21:37,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:37,601 INFO L225 Difference]: With dead ends: 132 [2020-10-29 03:21:37,601 INFO L226 Difference]: Without dead ends: 72 [2020-10-29 03:21:37,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 03:21:37,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-29 03:21:37,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-29 03:21:37,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-29 03:21:37,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-29 03:21:37,611 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 160 [2020-10-29 03:21:37,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:37,612 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-29 03:21:37,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:21:37,613 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-29 03:21:37,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-29 03:21:37,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:37,616 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 3, 3, 3, 3, 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 03:21:37,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:21:37,616 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:37,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:37,616 INFO L82 PathProgramCache]: Analyzing trace with hash -602565915, now seen corresponding path program 22 times [2020-10-29 03:21:37,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:37,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197796676] [2020-10-29 03:21:37,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:37,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:37,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:37,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:37,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:42,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:42,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 03:21:42,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:42,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 03:21:42,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:42,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:42,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:21:42,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 03:21:42,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:21:42,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:42,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:42,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:42,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:42,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:42,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:42,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:21:42,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:42,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:42,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:42,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:42,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:42,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:42,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:42,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:42,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:43,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:43,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 03:21:43,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:43,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 464 [2020-10-29 03:21:43,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:43,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:43,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:21:43,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:43,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:21:43,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:43,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 03:21:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:43,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:44,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:44,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 03:21:44,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:44,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-29 03:21:44,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:44,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:44,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:21:44,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:44,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:21:44,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:44,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-29 03:21:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:44,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:44,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:44,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:44,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 03:21:44,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:44,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 445 [2020-10-29 03:21:44,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:44,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:44,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:21:44,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:44,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:21:44,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:44,522 INFO L134 CoverageAnalysis]: Checked inductivity of 4503 backedges. 1452 proven. 2904 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-29 03:21:44,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197796676] [2020-10-29 03:21:44,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:44,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:21:44,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85171108] [2020-10-29 03:21:44,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:21:44,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:44,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:21:44,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:21:44,524 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 26 states. [2020-10-29 03:21:45,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:45,828 INFO L93 Difference]: Finished difference Result 136 states and 146 transitions. [2020-10-29 03:21:45,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:21:45,829 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 166 [2020-10-29 03:21:45,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:45,830 INFO L225 Difference]: With dead ends: 136 [2020-10-29 03:21:45,830 INFO L226 Difference]: Without dead ends: 74 [2020-10-29 03:21:45,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 03:21:45,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-29 03:21:45,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-29 03:21:45,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-29 03:21:45,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-29 03:21:45,839 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 166 [2020-10-29 03:21:45,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:45,839 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-29 03:21:45,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:21:45,839 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-29 03:21:45,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-29 03:21:45,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:45,841 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 3, 3, 3, 3, 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 03:21:45,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:21:45,841 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:45,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:45,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1603307203, now seen corresponding path program 23 times [2020-10-29 03:21:45,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:45,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530058377] [2020-10-29 03:21:45,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:45,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:45,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:45,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:45,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:45,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:50,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:50,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-29 03:21:50,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:50,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 03:21:50,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:50,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:50,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:21:50,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:21:50,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:21:50,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:50,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:50,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:50,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:50,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:50,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:50,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:21:50,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:50,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:50,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:50,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:50,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:50,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:50,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:50,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:51,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:51,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 03:21:51,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:51,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-29 03:21:51,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:51,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:51,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:21:51,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:51,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:21:51,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:51,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 03:21:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:51,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:51,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:52,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:52,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 03:21:52,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:52,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 463 [2020-10-29 03:21:52,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:52,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:52,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:21:52,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:52,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:21:52,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:52,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-29 03:21:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:52,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:52,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:52,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:52,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 03:21:52,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:52,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 494 [2020-10-29 03:21:52,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:52,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:52,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:21:52,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:52,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:21:52,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:21:52,843 INFO L134 CoverageAnalysis]: Checked inductivity of 4914 backedges. 1587 proven. 3174 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-29 03:21:52,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530058377] [2020-10-29 03:21:52,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:21:52,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:21:52,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120796405] [2020-10-29 03:21:52,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:21:52,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:21:52,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:21:52,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:21:52,845 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 27 states. [2020-10-29 03:21:54,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:21:54,206 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2020-10-29 03:21:54,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:21:54,206 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 172 [2020-10-29 03:21:54,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:21:54,207 INFO L225 Difference]: With dead ends: 140 [2020-10-29 03:21:54,208 INFO L226 Difference]: Without dead ends: 76 [2020-10-29 03:21:54,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 03:21:54,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-29 03:21:54,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-29 03:21:54,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-29 03:21:54,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-29 03:21:54,216 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 172 [2020-10-29 03:21:54,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:21:54,216 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-29 03:21:54,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:21:54,217 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-29 03:21:54,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-29 03:21:54,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:21:54,218 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 3, 3, 3, 3, 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 03:21:54,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:21:54,218 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:21:54,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:21:54,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1013701665, now seen corresponding path program 24 times [2020-10-29 03:21:54,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:21:54,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215100802] [2020-10-29 03:21:54,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:21:54,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:54,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:54,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:54,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:54,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:59,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:59,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-29 03:21:59,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:21:59,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 03:21:59,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:59,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:59,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:21:59,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-29 03:21:59,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:21:59,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:59,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:21:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:59,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:59,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:59,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:21:59,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:21:59,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:21:59,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:59,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:59,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:21:59,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:21:59,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:21:59,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:21:59,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:21:59,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:21:59,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:59,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:21:59,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:21:59,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:21:59,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:21:59,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 563 [2020-10-29 03:21:59,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:21:59,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:21:59,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:21:59,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:21:59,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:21:59,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:00,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 03:22:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:00,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:00,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:00,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:22:00,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:00,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-10-29 03:22:00,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:00,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:00,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:22:00,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:00,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:22:00,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:00,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-29 03:22:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:00,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:00,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:01,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:01,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:22:01,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:01,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-10-29 03:22:01,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:01,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:01,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:22:01,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:01,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:22:01,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:01,474 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 1728 proven. 3456 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-29 03:22:01,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215100802] [2020-10-29 03:22:01,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:22:01,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:22:01,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279467566] [2020-10-29 03:22:01,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:22:01,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:01,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:22:01,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:22:01,476 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 28 states. [2020-10-29 03:22:02,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:02,926 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2020-10-29 03:22:02,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:22:02,926 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 178 [2020-10-29 03:22:02,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:02,927 INFO L225 Difference]: With dead ends: 144 [2020-10-29 03:22:02,927 INFO L226 Difference]: Without dead ends: 78 [2020-10-29 03:22:02,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 03:22:02,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-29 03:22:02,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-29 03:22:02,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-29 03:22:02,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-29 03:22:02,940 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 178 [2020-10-29 03:22:02,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:02,940 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-29 03:22:02,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:22:02,940 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-29 03:22:02,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-29 03:22:02,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:02,942 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 3, 3, 3, 3, 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 03:22:02,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:22:02,942 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:02,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:02,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1201140479, now seen corresponding path program 25 times [2020-10-29 03:22:02,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:02,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555041719] [2020-10-29 03:22:02,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:02,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:02,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:03,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:03,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:07,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:07,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-29 03:22:07,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:22:07,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:22:07,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:07,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:07,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:22:07,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:22:07,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:22:07,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:07,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:22:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:07,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:07,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:07,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:22:07,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:07,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:22:07,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:07,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:07,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:07,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:07,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:07,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:07,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:22:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:08,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:08,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:08,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:22:08,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:08,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-10-29 03:22:08,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:08,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:08,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:22:08,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:08,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:22:08,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:09,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-29 03:22:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:09,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:09,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:09,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:09,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:22:09,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:09,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-29 03:22:09,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:09,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:09,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:22:09,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:09,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:22:09,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:09,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-29 03:22:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:09,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:09,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:09,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:09,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:22:09,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:09,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-10-29 03:22:09,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:09,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:09,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:22:09,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:09,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:22:09,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:09,977 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 1875 proven. 3750 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-29 03:22:09,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555041719] [2020-10-29 03:22:09,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:22:09,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:22:09,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635667192] [2020-10-29 03:22:09,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:22:09,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:09,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:22:09,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:22:09,979 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 29 states. [2020-10-29 03:22:11,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:11,574 INFO L93 Difference]: Finished difference Result 148 states and 158 transitions. [2020-10-29 03:22:11,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:22:11,574 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 184 [2020-10-29 03:22:11,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:11,575 INFO L225 Difference]: With dead ends: 148 [2020-10-29 03:22:11,575 INFO L226 Difference]: Without dead ends: 80 [2020-10-29 03:22:11,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2020-10-29 03:22:11,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-29 03:22:11,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-29 03:22:11,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-29 03:22:11,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-29 03:22:11,585 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 184 [2020-10-29 03:22:11,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:11,585 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-29 03:22:11,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:22:11,585 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-29 03:22:11,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-29 03:22:11,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:11,587 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 3, 3, 3, 3, 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 03:22:11,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:22:11,587 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:11,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:11,588 INFO L82 PathProgramCache]: Analyzing trace with hash 983378781, now seen corresponding path program 26 times [2020-10-29 03:22:11,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:11,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486574635] [2020-10-29 03:22:11,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:11,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:11,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:11,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:11,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:16,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:16,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-29 03:22:16,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:22:16,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-29 03:22:16,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:16,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:16,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:22:16,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-29 03:22:16,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:22:16,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:16,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:22:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:16,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:16,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:16,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:22:16,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:16,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:22:16,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:16,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:16,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:16,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:16,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:16,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:16,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:22:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:16,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:16,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:17,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:17,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:22:17,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:17,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 651 [2020-10-29 03:22:17,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:17,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:17,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:22:17,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:17,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:22:17,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:17,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 03:22:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:17,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:18,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:18,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:22:18,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:18,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 461 [2020-10-29 03:22:18,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:18,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:18,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:22:18,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:18,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:22:18,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:18,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-29 03:22:18,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:18,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:18,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:18,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:18,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:22:18,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:18,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-10-29 03:22:18,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:18,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:18,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:22:18,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:18,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:22:18,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:18,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6255 backedges. 2028 proven. 4056 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-29 03:22:18,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486574635] [2020-10-29 03:22:18,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:22:18,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:22:18,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644310485] [2020-10-29 03:22:18,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:22:18,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:18,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:22:18,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:22:18,977 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 30 states. [2020-10-29 03:22:20,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:20,636 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2020-10-29 03:22:20,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:22:20,637 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 190 [2020-10-29 03:22:20,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:20,638 INFO L225 Difference]: With dead ends: 152 [2020-10-29 03:22:20,638 INFO L226 Difference]: Without dead ends: 82 [2020-10-29 03:22:20,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2020-10-29 03:22:20,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-29 03:22:20,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-29 03:22:20,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-29 03:22:20,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-29 03:22:20,646 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 190 [2020-10-29 03:22:20,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:20,647 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-29 03:22:20,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:22:20,647 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-29 03:22:20,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-29 03:22:20,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:20,648 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 3, 3, 3, 3, 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 03:22:20,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:22:20,649 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:20,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:20,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1449401029, now seen corresponding path program 27 times [2020-10-29 03:22:20,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:20,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490585178] [2020-10-29 03:22:20,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:20,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:20,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:20,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:20,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:20,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:25,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:25,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-29 03:22:25,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:22:25,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:22:25,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:25,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:25,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:22:25,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:22:25,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:22:25,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:25,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:22:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:25,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:25,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:25,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:22:25,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:25,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:22:25,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:25,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:25,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:25,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:25,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:25,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:25,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:22:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:25,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:26,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:26,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:22:26,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:26,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 502 [2020-10-29 03:22:26,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:26,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:26,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:22:26,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:26,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:22:26,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:26,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 03:22:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:26,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:26,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:27,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:27,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:22:27,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:27,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 602 [2020-10-29 03:22:27,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:27,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:27,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:22:27,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:27,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:22:27,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:27,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-29 03:22:27,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:27,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:27,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:28,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:28,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:22:28,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:28,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 514 [2020-10-29 03:22:28,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:28,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:28,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:22:28,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:28,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:22:28,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:28,080 INFO L134 CoverageAnalysis]: Checked inductivity of 6738 backedges. 2187 proven. 4374 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-29 03:22:28,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490585178] [2020-10-29 03:22:28,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:22:28,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 03:22:28,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768326682] [2020-10-29 03:22:28,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 03:22:28,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:28,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 03:22:28,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:22:28,082 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 31 states. [2020-10-29 03:22:29,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:29,787 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2020-10-29 03:22:29,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:22:29,787 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 196 [2020-10-29 03:22:29,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:29,788 INFO L225 Difference]: With dead ends: 156 [2020-10-29 03:22:29,788 INFO L226 Difference]: Without dead ends: 84 [2020-10-29 03:22:29,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2020-10-29 03:22:29,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-29 03:22:29,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-29 03:22:29,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-29 03:22:29,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-29 03:22:29,797 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 196 [2020-10-29 03:22:29,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:29,798 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-29 03:22:29,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 03:22:29,798 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-29 03:22:29,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-29 03:22:29,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:29,799 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 3, 3, 3, 3, 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 03:22:29,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:22:29,800 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:29,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:29,800 INFO L82 PathProgramCache]: Analyzing trace with hash 2035056793, now seen corresponding path program 28 times [2020-10-29 03:22:29,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:29,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614300399] [2020-10-29 03:22:29,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:29,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:29,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:29,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:29,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:30,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:34,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:34,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-29 03:22:34,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:22:34,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-29 03:22:34,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:34,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:34,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:22:34,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:22:34,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:22:34,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:34,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:22:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:34,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:34,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:34,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:22:34,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:34,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:22:34,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:34,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:34,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:34,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:34,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:34,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:34,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:22:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:34,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:35,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:35,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:22:35,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:35,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 608 [2020-10-29 03:22:35,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:35,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:35,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:22:35,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:35,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:22:35,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:36,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 03:22:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:36,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:36,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:36,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:36,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:22:36,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:36,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 576 [2020-10-29 03:22:36,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:36,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:36,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:22:36,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:36,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:22:36,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:36,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-29 03:22:36,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:36,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:36,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:37,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:37,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:22:37,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:37,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 568 [2020-10-29 03:22:37,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:37,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:37,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:22:37,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:37,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:22:37,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:37,452 INFO L134 CoverageAnalysis]: Checked inductivity of 7239 backedges. 2352 proven. 4704 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-29 03:22:37,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614300399] [2020-10-29 03:22:37,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:22:37,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:22:37,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034007703] [2020-10-29 03:22:37,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:22:37,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:37,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:22:37,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:22:37,454 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 32 states. [2020-10-29 03:22:39,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:39,153 INFO L93 Difference]: Finished difference Result 160 states and 170 transitions. [2020-10-29 03:22:39,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:22:39,154 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 202 [2020-10-29 03:22:39,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:39,155 INFO L225 Difference]: With dead ends: 160 [2020-10-29 03:22:39,155 INFO L226 Difference]: Without dead ends: 86 [2020-10-29 03:22:39,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2020-10-29 03:22:39,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-29 03:22:39,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-29 03:22:39,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-29 03:22:39,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-29 03:22:39,169 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 202 [2020-10-29 03:22:39,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:39,169 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-29 03:22:39,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:22:39,169 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-29 03:22:39,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-29 03:22:39,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:39,171 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 3, 3, 3, 3, 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 03:22:39,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:22:39,171 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:39,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:39,171 INFO L82 PathProgramCache]: Analyzing trace with hash -721461897, now seen corresponding path program 29 times [2020-10-29 03:22:39,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:39,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122864530] [2020-10-29 03:22:39,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:39,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:39,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:39,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:39,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:44,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:44,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-29 03:22:44,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:22:44,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:22:44,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:44,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:44,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:22:44,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:22:44,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:22:44,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:44,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:22:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:44,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:44,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:44,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:22:44,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:44,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:22:44,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:44,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:44,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:44,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:44,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:44,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:44,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:22:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:44,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:44,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:44,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 03:22:44,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:44,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 642 [2020-10-29 03:22:44,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:44,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:44,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:22:44,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:44,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:22:44,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:45,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 03:22:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:45,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:45,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:46,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:46,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 03:22:46,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:46,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 605 [2020-10-29 03:22:46,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:46,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:46,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:22:46,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:46,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:22:46,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:46,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 03:22:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:46,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:46,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:46,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:46,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 03:22:46,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:46,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 679 [2020-10-29 03:22:46,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:46,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:46,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:22:46,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:46,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:22:46,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:47,044 INFO L134 CoverageAnalysis]: Checked inductivity of 7758 backedges. 2523 proven. 5046 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-29 03:22:47,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122864530] [2020-10-29 03:22:47,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:22:47,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 03:22:47,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152132555] [2020-10-29 03:22:47,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 03:22:47,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:47,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 03:22:47,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:22:47,046 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 33 states. [2020-10-29 03:22:48,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:48,914 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2020-10-29 03:22:48,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 03:22:48,914 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 208 [2020-10-29 03:22:48,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:48,916 INFO L225 Difference]: With dead ends: 164 [2020-10-29 03:22:48,916 INFO L226 Difference]: Without dead ends: 88 [2020-10-29 03:22:48,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2020-10-29 03:22:48,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-29 03:22:48,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-29 03:22:48,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-29 03:22:48,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-29 03:22:48,924 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 208 [2020-10-29 03:22:48,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:48,924 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-29 03:22:48,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 03:22:48,925 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-29 03:22:48,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-29 03:22:48,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:48,926 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 3, 3, 3, 3, 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 03:22:48,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:22:48,926 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:48,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:48,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1533223979, now seen corresponding path program 30 times [2020-10-29 03:22:48,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:48,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236336004] [2020-10-29 03:22:48,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:48,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:48,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:49,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:49,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:54,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:54,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-29 03:22:54,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:22:54,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-29 03:22:54,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:54,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:54,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:22:54,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 03:22:54,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:22:54,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:54,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:22:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:54,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:54,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:54,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:22:54,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:54,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:22:54,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:54,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:54,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:22:54,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:22:54,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:22:54,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:54,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:22:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:54,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:54,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:54,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 03:22:54,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:22:54,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 707 [2020-10-29 03:22:54,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:54,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:54,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:22:54,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:54,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:22:54,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:55,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 03:22:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:55,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:55,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:56,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:56,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 03:22:56,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:56,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 730 [2020-10-29 03:22:56,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:56,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:56,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:22:56,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:56,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:22:56,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:56,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-29 03:22:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:56,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:56,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:56,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:22:56,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 03:22:56,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:22:56,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 711 [2020-10-29 03:22:56,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:22:56,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:22:56,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:22:56,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:22:56,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:22:56,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:22:57,044 INFO L134 CoverageAnalysis]: Checked inductivity of 8295 backedges. 2700 proven. 5400 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-29 03:22:57,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236336004] [2020-10-29 03:22:57,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:22:57,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 03:22:57,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673384109] [2020-10-29 03:22:57,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 03:22:57,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:22:57,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 03:22:57,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:22:57,046 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 34 states. [2020-10-29 03:22:59,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:22:59,091 INFO L93 Difference]: Finished difference Result 168 states and 178 transitions. [2020-10-29 03:22:59,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 03:22:59,093 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 214 [2020-10-29 03:22:59,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:22:59,094 INFO L225 Difference]: With dead ends: 168 [2020-10-29 03:22:59,094 INFO L226 Difference]: Without dead ends: 90 [2020-10-29 03:22:59,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2020-10-29 03:22:59,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-29 03:22:59,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-29 03:22:59,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-29 03:22:59,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-29 03:22:59,101 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 214 [2020-10-29 03:22:59,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:22:59,101 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-29 03:22:59,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 03:22:59,101 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-29 03:22:59,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-29 03:22:59,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:22:59,103 INFO L422 BasicCegarLoop]: trace histogram [93, 93, 3, 3, 3, 3, 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 03:22:59,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:22:59,103 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:22:59,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:22:59,104 INFO L82 PathProgramCache]: Analyzing trace with hash -2103092301, now seen corresponding path program 31 times [2020-10-29 03:22:59,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:22:59,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494966595] [2020-10-29 03:22:59,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:22:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:22:59,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:59,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:59,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:22:59,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:04,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:04,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-29 03:23:04,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:23:04,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 03:23:04,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:04,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:04,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:23:04,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-29 03:23:04,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:23:04,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:04,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:23:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:04,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:04,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:04,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:23:04,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:04,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:23:04,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:04,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:04,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:23:04,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:23:04,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:23:04,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:04,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:23:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:04,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:04,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:04,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:04,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 03:23:04,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:04,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 802 [2020-10-29 03:23:04,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:04,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:04,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:23:04,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:04,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:23:04,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:05,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-29 03:23:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:05,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:06,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:06,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 03:23:06,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:06,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 853 [2020-10-29 03:23:06,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:06,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:06,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:23:06,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:06,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:23:06,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:06,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-29 03:23:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:06,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:06,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:07,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:07,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 03:23:07,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:23:07,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 786 [2020-10-29 03:23:07,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:07,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:07,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:23:07,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:23:07,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:23:07,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:07,598 INFO L134 CoverageAnalysis]: Checked inductivity of 8850 backedges. 2883 proven. 5766 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2020-10-29 03:23:07,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494966595] [2020-10-29 03:23:07,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:23:07,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-29 03:23:07,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626805348] [2020-10-29 03:23:07,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-29 03:23:07,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:23:07,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-29 03:23:07,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:23:07,600 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 35 states.