/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:00:25,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:00:25,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:00:26,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:00:26,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:00:26,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:00:26,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:00:26,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:00:26,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:00:26,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:00:26,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:00:26,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:00:26,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:00:26,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:00:26,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:00:26,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:00:26,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:00:26,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:00:26,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:00:26,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:00:26,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:00:26,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:00:26,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:00:26,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:00:26,051 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:00:26,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:00:26,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:00:26,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:00:26,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:00:26,064 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-27 00:00:26,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:00:26,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:00:26,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:00:26,085 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 00:00:26,149 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:00:26,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:00:26,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:00:26,155 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:00:26,155 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:00:26,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:00:26,156 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:00:26,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:00:26,156 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:00:26,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:00:26,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:00:26,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:00:26,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:00:26,157 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:00:26,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:00:26,158 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:00:26,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:00:26,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:00:26,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:00:26,159 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:00:26,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:00:26,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:00:26,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:00:26,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:00:26,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:00:26,160 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:00:26,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:00:26,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:00:26,162 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:00:26,162 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:00:26,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:00:26,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:00:26,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:00:26,644 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:00:26,645 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:00:26,648 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label41.c [2020-10-27 00:00:26,750 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3063f094f/e254f629cc7747d0a32b23172a3da078/FLAG029736a81 [2020-10-27 00:00:27,675 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:00:27,676 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label41.c [2020-10-27 00:00:27,697 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3063f094f/e254f629cc7747d0a32b23172a3da078/FLAG029736a81 [2020-10-27 00:00:27,774 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3063f094f/e254f629cc7747d0a32b23172a3da078 [2020-10-27 00:00:27,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:00:27,785 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:00:27,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:00:27,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:00:27,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:00:27,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:00:27" (1/1) ... [2020-10-27 00:00:27,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32f66b43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:27, skipping insertion in model container [2020-10-27 00:00:27,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:00:27" (1/1) ... [2020-10-27 00:00:27,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:00:27,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:00:28,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:00:28,856 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:00:29,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:00:29,160 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:00:29,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:29 WrapperNode [2020-10-27 00:00:29,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:00:29,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:00:29,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:00:29,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:00:29,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:29" (1/1) ... [2020-10-27 00:00:29,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:29" (1/1) ... [2020-10-27 00:00:29,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:29" (1/1) ... [2020-10-27 00:00:29,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:29" (1/1) ... [2020-10-27 00:00:29,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:29" (1/1) ... [2020-10-27 00:00:29,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:29" (1/1) ... [2020-10-27 00:00:29,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:29" (1/1) ... [2020-10-27 00:00:29,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:00:29,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:00:29,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:00:29,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:00:29,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:00:29,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:00:29,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:00:29,487 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:00:29,487 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:00:29,488 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:00:29,488 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:00:29,488 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:00:29,488 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:00:29,488 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:00:29,488 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:00:29,489 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:00:29,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:00:29,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:00:29,489 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:00:29,489 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:00:29,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:00:29,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:00:29,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:00:29,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:00:29,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:00:29,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:00:32,205 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:00:32,206 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:00:32,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:00:32 BoogieIcfgContainer [2020-10-27 00:00:32,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:00:32,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:00:32,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:00:32,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:00:32,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:00:27" (1/3) ... [2020-10-27 00:00:32,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc58dfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:00:32, skipping insertion in model container [2020-10-27 00:00:32,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:29" (2/3) ... [2020-10-27 00:00:32,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc58dfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:00:32, skipping insertion in model container [2020-10-27 00:00:32,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:00:32" (3/3) ... [2020-10-27 00:00:32,219 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label41.c [2020-10-27 00:00:32,232 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:00:32,238 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:00:32,253 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:00:32,284 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:00:32,285 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:00:32,285 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:00:32,285 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:00:32,285 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:00:32,285 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:00:32,286 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:00:32,286 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:00:32,314 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-27 00:00:32,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-27 00:00:32,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:32,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:00:32,323 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:32,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:32,329 INFO L82 PathProgramCache]: Analyzing trace with hash -2037616244, now seen corresponding path program 1 times [2020-10-27 00:00:32,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:32,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962788774] [2020-10-27 00:00:32,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:32,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:33,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:33,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 00:00:33,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:33,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 520 [2020-10-27 00:00:33,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:33,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:00:33,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:00:33,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 00:00:33,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 00:00:33,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:00:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:33,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:33,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:33,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:00:33,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:33,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 00:00:33,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:33,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:00:33,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:33,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:00:33,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:00:33,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:00:33,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962788774] [2020-10-27 00:00:33,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:00:33,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 00:00:33,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551344337] [2020-10-27 00:00:33,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 00:00:33,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:33,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 00:00:33,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 00:00:33,394 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-27 00:00:38,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:00:38,036 INFO L93 Difference]: Finished difference Result 1174 states and 2171 transitions. [2020-10-27 00:00:38,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 00:00:38,044 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-27 00:00:38,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:00:38,074 INFO L225 Difference]: With dead ends: 1174 [2020-10-27 00:00:38,074 INFO L226 Difference]: Without dead ends: 697 [2020-10-27 00:00:38,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:00:38,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-27 00:00:38,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 690. [2020-10-27 00:00:38,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-10-27 00:00:38,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1078 transitions. [2020-10-27 00:00:38,207 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1078 transitions. Word has length 30 [2020-10-27 00:00:38,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:00:38,209 INFO L481 AbstractCegarLoop]: Abstraction has 690 states and 1078 transitions. [2020-10-27 00:00:38,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 00:00:38,209 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1078 transitions. [2020-10-27 00:00:38,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-27 00:00:38,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:38,218 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:00:38,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:00:38,218 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:38,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:38,222 INFO L82 PathProgramCache]: Analyzing trace with hash 731523570, now seen corresponding path program 1 times [2020-10-27 00:00:38,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:38,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767833575] [2020-10-27 00:00:38,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:38,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:38,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:39,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:39,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 00:00:39,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:00:39,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1167 [2020-10-27 00:00:39,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:39,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:00:39,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:00:39,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 00:00:39,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:00:39,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:00:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:39,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:39,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:39,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:00:39,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:39,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 00:00:39,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:00:39,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:39,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:00:39,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:39,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:00:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:39,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:39,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:39,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 00:00:39,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:39,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-27 00:00:39,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:39,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:39,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:00:39,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 00:00:39,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:39,960 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:00:39,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767833575] [2020-10-27 00:00:39,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:00:39,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:00:39,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517984609] [2020-10-27 00:00:39,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:00:39,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:39,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:00:39,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:00:39,965 INFO L87 Difference]: Start difference. First operand 690 states and 1078 transitions. Second operand 7 states. [2020-10-27 00:00:44,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:00:44,933 INFO L93 Difference]: Finished difference Result 1744 states and 2661 transitions. [2020-10-27 00:00:44,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:00:44,935 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2020-10-27 00:00:44,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:00:44,943 INFO L225 Difference]: With dead ends: 1744 [2020-10-27 00:00:44,943 INFO L226 Difference]: Without dead ends: 1060 [2020-10-27 00:00:44,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:00:44,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2020-10-27 00:00:45,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 1047. [2020-10-27 00:00:45,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1047 states. [2020-10-27 00:00:45,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1500 transitions. [2020-10-27 00:00:45,030 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1500 transitions. Word has length 105 [2020-10-27 00:00:45,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:00:45,031 INFO L481 AbstractCegarLoop]: Abstraction has 1047 states and 1500 transitions. [2020-10-27 00:00:45,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:00:45,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1500 transitions. [2020-10-27 00:00:45,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 00:00:45,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:45,040 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:00:45,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:00:45,046 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:45,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:45,047 INFO L82 PathProgramCache]: Analyzing trace with hash 896222636, now seen corresponding path program 1 times [2020-10-27 00:00:45,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:45,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773225856] [2020-10-27 00:00:45,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:45,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:45,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:45,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:45,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 00:00:45,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:00:45,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 883 [2020-10-27 00:00:45,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:45,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:00:45,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:00:45,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:00:45,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:46,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:00:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:46,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:46,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:46,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:00:46,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:46,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 00:00:46,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:46,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:00:46,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:46,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:00:46,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:46,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:00:46,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:46,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:46,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:46,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 00:00:46,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:46,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-27 00:00:46,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:46,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:46,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:00:46,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:00:46,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:46,421 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:00:46,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773225856] [2020-10-27 00:00:46,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:00:46,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:00:46,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948774950] [2020-10-27 00:00:46,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:00:46,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:46,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:00:46,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:00:46,425 INFO L87 Difference]: Start difference. First operand 1047 states and 1500 transitions. Second operand 7 states. [2020-10-27 00:00:51,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:00:51,365 INFO L93 Difference]: Finished difference Result 3184 states and 4660 transitions. [2020-10-27 00:00:51,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:00:51,367 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 106 [2020-10-27 00:00:51,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:00:51,392 INFO L225 Difference]: With dead ends: 3184 [2020-10-27 00:00:51,392 INFO L226 Difference]: Without dead ends: 2143 [2020-10-27 00:00:51,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:00:51,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-27 00:00:51,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2096. [2020-10-27 00:00:51,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2096 states. [2020-10-27 00:00:51,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 2721 transitions. [2020-10-27 00:00:51,549 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 2721 transitions. Word has length 106 [2020-10-27 00:00:51,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:00:51,549 INFO L481 AbstractCegarLoop]: Abstraction has 2096 states and 2721 transitions. [2020-10-27 00:00:51,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:00:51,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 2721 transitions. [2020-10-27 00:00:51,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 00:00:51,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:51,554 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:00:51,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:00:51,554 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:51,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:51,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1877364690, now seen corresponding path program 1 times [2020-10-27 00:00:51,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:51,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416350530] [2020-10-27 00:00:51,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:51,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:51,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:51,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 00:00:51,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:51,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-27 00:00:51,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:51,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:00:51,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-27 00:00:51,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 00:00:51,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:00:52,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:00:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:52,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:52,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:52,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:00:52,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:52,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:00:52,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:52,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:00:52,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:52,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:00:52,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:00:52,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:00:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:52,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:00:52,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:00:52,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 00:00:52,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:00:52,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 00:00:52,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:00:52,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:00:52,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:00:52,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 00:00:52,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:00:52,218 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:00:52,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416350530] [2020-10-27 00:00:52,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:00:52,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 00:00:52,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923468307] [2020-10-27 00:00:52,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 00:00:52,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:00:52,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 00:00:52,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 00:00:52,224 INFO L87 Difference]: Start difference. First operand 2096 states and 2721 transitions. Second operand 6 states. [2020-10-27 00:00:59,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:00:59,463 INFO L93 Difference]: Finished difference Result 5590 states and 7690 transitions. [2020-10-27 00:00:59,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:00:59,464 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2020-10-27 00:00:59,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:00:59,490 INFO L225 Difference]: With dead ends: 5590 [2020-10-27 00:00:59,491 INFO L226 Difference]: Without dead ends: 3500 [2020-10-27 00:00:59,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:00:59,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3500 states. [2020-10-27 00:00:59,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3500 to 3491. [2020-10-27 00:00:59,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3491 states. [2020-10-27 00:00:59,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3491 states to 3491 states and 4599 transitions. [2020-10-27 00:00:59,624 INFO L78 Accepts]: Start accepts. Automaton has 3491 states and 4599 transitions. Word has length 121 [2020-10-27 00:00:59,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:00:59,626 INFO L481 AbstractCegarLoop]: Abstraction has 3491 states and 4599 transitions. [2020-10-27 00:00:59,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 00:00:59,626 INFO L276 IsEmpty]: Start isEmpty. Operand 3491 states and 4599 transitions. [2020-10-27 00:00:59,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2020-10-27 00:00:59,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:00:59,641 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:00:59,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:00:59,642 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:00:59,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:00:59,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1226096928, now seen corresponding path program 1 times [2020-10-27 00:00:59,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:00:59,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073367819] [2020-10-27 00:00:59,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:00:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:00:59,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:00,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:00,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:02,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:02,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:04,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:04,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 502 [2020-10-27 00:01:04,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:01:04,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5098 [2020-10-27 00:01:04,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:04,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 00:01:04,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:01:04,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 466 [2020-10-27 00:01:04,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:05,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:01:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:05,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:05,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:05,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:01:05,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:05,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 00:01:05,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:05,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:01:05,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:05,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:01:05,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:05,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:01:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:05,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:05,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:05,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:05,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 00:01:05,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:01:05,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-27 00:01:05,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:05,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:05,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:05,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 00:01:05,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:05,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 00:01:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:05,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:05,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:06,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:06,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:01:06,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:01:06,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 900 [2020-10-27 00:01:06,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:06,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:06,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:06,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 00:01:06,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:06,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 00:01:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:06,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:06,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:06,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 00:01:06,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:06,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-27 00:01:06,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:06,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:06,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:06,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 00:01:06,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:01:07,648 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 70 proven. 173 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-27 00:01:07,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073367819] [2020-10-27 00:01:07,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:01:07,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:01:07,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733084075] [2020-10-27 00:01:07,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 00:01:07,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:01:07,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 00:01:07,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-27 00:01:07,652 INFO L87 Difference]: Start difference. First operand 3491 states and 4599 transitions. Second operand 9 states. [2020-10-27 00:01:13,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:01:13,972 INFO L93 Difference]: Finished difference Result 9073 states and 12279 transitions. [2020-10-27 00:01:13,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:01:13,977 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 486 [2020-10-27 00:01:13,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:01:14,009 INFO L225 Difference]: With dead ends: 9073 [2020-10-27 00:01:14,009 INFO L226 Difference]: Without dead ends: 4863 [2020-10-27 00:01:14,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-10-27 00:01:14,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4863 states. [2020-10-27 00:01:14,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4863 to 4159. [2020-10-27 00:01:14,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4159 states. [2020-10-27 00:01:14,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4159 states to 4159 states and 4659 transitions. [2020-10-27 00:01:14,177 INFO L78 Accepts]: Start accepts. Automaton has 4159 states and 4659 transitions. Word has length 486 [2020-10-27 00:01:14,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:01:14,177 INFO L481 AbstractCegarLoop]: Abstraction has 4159 states and 4659 transitions. [2020-10-27 00:01:14,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 00:01:14,178 INFO L276 IsEmpty]: Start isEmpty. Operand 4159 states and 4659 transitions. [2020-10-27 00:01:14,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 700 [2020-10-27 00:01:14,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:14,200 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:01:14,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:01:14,201 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:14,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:14,201 INFO L82 PathProgramCache]: Analyzing trace with hash 408933938, now seen corresponding path program 1 times [2020-10-27 00:01:14,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:14,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265513774] [2020-10-27 00:01:14,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:14,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:14,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:14,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:15,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:19,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:19,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 719 [2020-10-27 00:01:19,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:01:19,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 00:01:19,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:19,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:01:19,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:01:19,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 00:01:19,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:19,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:01:19,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:19,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:19,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:19,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:01:19,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:19,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 00:01:19,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:19,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:01:19,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:19,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:01:19,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:01:19,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:01:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:19,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:19,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:19,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:01:19,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:19,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-27 00:01:19,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:19,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:19,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:19,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 00:01:19,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:01:19,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 00:01:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:19,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:19,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:19,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:01:19,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:19,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-27 00:01:19,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:19,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:19,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-27 00:01:19,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:19,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:19,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-27 00:01:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:20,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:20,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:20,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:01:20,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:20,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 00:01:20,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:20,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:20,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:01:20,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:20,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:20,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-27 00:01:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:20,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:20,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:20,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:01:20,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:20,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-27 00:01:20,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:20,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:20,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:01:20,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:20,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:20,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-10-27 00:01:20,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:20,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:20,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:20,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 00:01:20,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:20,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-27 00:01:20,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:20,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:20,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 00:01:20,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:20,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:01:21,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 110 proven. 380 refuted. 0 times theorem prover too weak. 709 trivial. 0 not checked. [2020-10-27 00:01:21,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265513774] [2020-10-27 00:01:21,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:01:21,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:01:21,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911948490] [2020-10-27 00:01:21,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:01:21,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:01:21,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:01:21,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:01:21,201 INFO L87 Difference]: Start difference. First operand 4159 states and 4659 transitions. Second operand 7 states. [2020-10-27 00:01:25,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:01:25,295 INFO L93 Difference]: Finished difference Result 12100 states and 13804 transitions. [2020-10-27 00:01:25,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:01:25,296 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 699 [2020-10-27 00:01:25,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:01:25,338 INFO L225 Difference]: With dead ends: 12100 [2020-10-27 00:01:25,338 INFO L226 Difference]: Without dead ends: 7947 [2020-10-27 00:01:25,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:01:25,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7947 states. [2020-10-27 00:01:25,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7947 to 7594. [2020-10-27 00:01:25,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7594 states. [2020-10-27 00:01:25,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7594 states to 7594 states and 8589 transitions. [2020-10-27 00:01:25,565 INFO L78 Accepts]: Start accepts. Automaton has 7594 states and 8589 transitions. Word has length 699 [2020-10-27 00:01:25,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:01:25,566 INFO L481 AbstractCegarLoop]: Abstraction has 7594 states and 8589 transitions. [2020-10-27 00:01:25,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:01:25,566 INFO L276 IsEmpty]: Start isEmpty. Operand 7594 states and 8589 transitions. [2020-10-27 00:01:25,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 720 [2020-10-27 00:01:25,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:25,604 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:01:25,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:01:25,605 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:25,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:25,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1774138062, now seen corresponding path program 1 times [2020-10-27 00:01:25,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:25,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005307179] [2020-10-27 00:01:25,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:25,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:25,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:26,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:30,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:30,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 737 [2020-10-27 00:01:30,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:01:30,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-27 00:01:30,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:30,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 00:01:30,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:01:30,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-27 00:01:30,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:31,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:01:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:31,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:31,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:31,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:01:31,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:31,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 00:01:31,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:31,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:01:31,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:31,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:01:31,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:31,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:01:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:31,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:31,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:32,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:32,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 00:01:32,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:01:32,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 944 [2020-10-27 00:01:32,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:32,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 00:01:32,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:32,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-27 00:01:32,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:33,126 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2020-10-27 00:01:33,366 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2020-10-27 00:01:33,645 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2020-10-27 00:01:34,047 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2020-10-27 00:01:34,474 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2020-10-27 00:01:35,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-27 00:01:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:35,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:35,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:35,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:01:35,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:35,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 00:01:35,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:35,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:35,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:01:35,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:35,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:35,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 00:01:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:35,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:35,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:35,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:01:35,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:35,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 00:01:35,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:35,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:35,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:01:35,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:35,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:35,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2020-10-27 00:01:35,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:35,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:35,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:35,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 00:01:35,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:35,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 00:01:35,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:35,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:35,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 00:01:35,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:35,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:38,603 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 88 proven. 425 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2020-10-27 00:01:38,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005307179] [2020-10-27 00:01:38,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:01:38,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 00:01:38,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719372169] [2020-10-27 00:01:38,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 00:01:38,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:01:38,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 00:01:38,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:01:38,606 INFO L87 Difference]: Start difference. First operand 7594 states and 8589 transitions. Second operand 13 states. [2020-10-27 00:01:38,875 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-27 00:01:39,012 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-27 00:01:39,825 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 84 [2020-10-27 00:01:40,378 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 89 [2020-10-27 00:01:40,867 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 94 [2020-10-27 00:01:41,495 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 95 [2020-10-27 00:01:42,166 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 94 [2020-10-27 00:01:42,698 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 93 [2020-10-27 00:01:43,806 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 94 [2020-10-27 00:01:44,359 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 99 [2020-10-27 00:01:44,803 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 103 [2020-10-27 00:01:45,379 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 105 [2020-10-27 00:01:45,698 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-10-27 00:01:46,320 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 104 [2020-10-27 00:01:46,774 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 118 [2020-10-27 00:01:48,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:01:48,187 INFO L93 Difference]: Finished difference Result 15189 states and 17202 transitions. [2020-10-27 00:01:48,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 00:01:48,190 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 719 [2020-10-27 00:01:48,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:01:48,228 INFO L225 Difference]: With dead ends: 15189 [2020-10-27 00:01:48,228 INFO L226 Difference]: Without dead ends: 7509 [2020-10-27 00:01:48,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=254, Invalid=616, Unknown=0, NotChecked=0, Total=870 [2020-10-27 00:01:48,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7509 states. [2020-10-27 00:01:48,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7509 to 7501. [2020-10-27 00:01:48,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7501 states. [2020-10-27 00:01:48,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7501 states to 7501 states and 8493 transitions. [2020-10-27 00:01:48,457 INFO L78 Accepts]: Start accepts. Automaton has 7501 states and 8493 transitions. Word has length 719 [2020-10-27 00:01:48,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:01:48,458 INFO L481 AbstractCegarLoop]: Abstraction has 7501 states and 8493 transitions. [2020-10-27 00:01:48,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 00:01:48,458 INFO L276 IsEmpty]: Start isEmpty. Operand 7501 states and 8493 transitions. [2020-10-27 00:01:48,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2020-10-27 00:01:48,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:48,479 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:01:48,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:01:48,479 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:48,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:48,480 INFO L82 PathProgramCache]: Analyzing trace with hash -174953916, now seen corresponding path program 1 times [2020-10-27 00:01:48,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:48,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877646407] [2020-10-27 00:01:48,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:48,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:48,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:49,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:52,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:52,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:53,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:53,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 858 [2020-10-27 00:01:53,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:01:53,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 00:01:53,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:53,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:53,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-27 00:01:53,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:01:53,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:53,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:01:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:53,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:53,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:53,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:01:53,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:53,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:01:53,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:53,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:53,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:53,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:53,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:53,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:01:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:53,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:54,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:54,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:01:54,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:54,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-27 00:01:54,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:54,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:01:54,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:01:54,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-27 00:01:54,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:54,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:01:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:54,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:54,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:54,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:01:54,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:54,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-27 00:01:54,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:54,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:01:54,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:01:54,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:01:54,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:54,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-27 00:01:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:54,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:54,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:54,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:01:54,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:54,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 00:01:54,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:54,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:54,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:01:54,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:54,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:54,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-27 00:01:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:54,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:54,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:54,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:01:54,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:54,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-27 00:01:54,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:54,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:54,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:01:54,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:54,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:54,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-27 00:01:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:54,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:01:54,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:01:54,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 00:01:54,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:01:54,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 00:01:54,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:01:54,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:01:54,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 00:01:54,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:01:54,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:01:55,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 248 proven. 347 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2020-10-27 00:01:55,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877646407] [2020-10-27 00:01:55,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:01:55,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:01:55,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642600791] [2020-10-27 00:01:55,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:01:55,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:01:55,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:01:55,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:01:55,387 INFO L87 Difference]: Start difference. First operand 7501 states and 8493 transitions. Second operand 7 states. [2020-10-27 00:01:59,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:01:59,201 INFO L93 Difference]: Finished difference Result 17821 states and 20383 transitions. [2020-10-27 00:01:59,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:01:59,202 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 838 [2020-10-27 00:01:59,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:01:59,240 INFO L225 Difference]: With dead ends: 17821 [2020-10-27 00:01:59,240 INFO L226 Difference]: Without dead ends: 10570 [2020-10-27 00:01:59,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:01:59,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10570 states. [2020-10-27 00:01:59,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10570 to 9886. [2020-10-27 00:01:59,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9886 states. [2020-10-27 00:01:59,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9886 states to 9886 states and 10832 transitions. [2020-10-27 00:01:59,577 INFO L78 Accepts]: Start accepts. Automaton has 9886 states and 10832 transitions. Word has length 838 [2020-10-27 00:01:59,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:01:59,578 INFO L481 AbstractCegarLoop]: Abstraction has 9886 states and 10832 transitions. [2020-10-27 00:01:59,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:01:59,578 INFO L276 IsEmpty]: Start isEmpty. Operand 9886 states and 10832 transitions. [2020-10-27 00:01:59,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1058 [2020-10-27 00:01:59,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:01:59,608 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:01:59,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:01:59,608 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:01:59,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:01:59,609 INFO L82 PathProgramCache]: Analyzing trace with hash 228258874, now seen corresponding path program 1 times [2020-10-27 00:01:59,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:01:59,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690257517] [2020-10-27 00:01:59,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:01:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:01:59,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:00,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:00,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:02,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:04,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:04,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1081 [2020-10-27 00:02:04,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:02:04,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-27 00:02:04,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:04,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:04,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-27 00:02:04,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:02:04,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:05,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:05,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:05,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:05,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:05,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:05,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:02:05,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:05,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:05,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:05,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:05,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:05,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:05,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:05,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:05,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:02:05,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:05,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 00:02:05,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:05,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:05,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:05,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:05,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:05,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:02:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:05,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:05,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:05,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:02:05,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:05,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 00:02:05,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:05,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:05,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:05,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 00:02:05,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:05,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:02:05,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:05,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:05,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:05,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:02:05,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:05,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-27 00:02:05,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:05,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:05,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:05,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:02:05,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:05,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-27 00:02:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:05,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:05,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:05,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:02:05,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:05,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 00:02:05,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:05,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:05,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:02:05,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:05,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:05,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-27 00:02:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:05,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:06,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:06,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:02:06,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:06,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-27 00:02:06,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:06,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:06,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-27 00:02:06,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:06,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:06,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 872 [2020-10-27 00:02:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:06,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:06,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:06,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:02:06,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:06,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:02:06,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:06,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:06,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 00:02:06,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:06,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:06,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 943 [2020-10-27 00:02:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:06,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:06,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:06,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 00:02:06,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:06,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:02:06,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:06,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:06,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 00:02:06,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:06,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:06,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2290 backedges. 414 proven. 397 refuted. 0 times theorem prover too weak. 1479 trivial. 0 not checked. [2020-10-27 00:02:06,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690257517] [2020-10-27 00:02:06,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:02:06,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:02:06,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398558959] [2020-10-27 00:02:06,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:02:06,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:06,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:02:06,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:02:06,854 INFO L87 Difference]: Start difference. First operand 9886 states and 10832 transitions. Second operand 7 states. [2020-10-27 00:02:11,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:11,116 INFO L93 Difference]: Finished difference Result 21903 states and 24283 transitions. [2020-10-27 00:02:11,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:02:11,117 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1057 [2020-10-27 00:02:11,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:11,159 INFO L225 Difference]: With dead ends: 21903 [2020-10-27 00:02:11,159 INFO L226 Difference]: Without dead ends: 12267 [2020-10-27 00:02:11,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:02:11,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12267 states. [2020-10-27 00:02:11,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12267 to 12255. [2020-10-27 00:02:11,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12255 states. [2020-10-27 00:02:11,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12255 states to 12255 states and 13333 transitions. [2020-10-27 00:02:11,459 INFO L78 Accepts]: Start accepts. Automaton has 12255 states and 13333 transitions. Word has length 1057 [2020-10-27 00:02:11,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:11,460 INFO L481 AbstractCegarLoop]: Abstraction has 12255 states and 13333 transitions. [2020-10-27 00:02:11,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:02:11,460 INFO L276 IsEmpty]: Start isEmpty. Operand 12255 states and 13333 transitions. [2020-10-27 00:02:11,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1366 [2020-10-27 00:02:11,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:11,503 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:02:11,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:02:11,504 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:11,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:11,505 INFO L82 PathProgramCache]: Analyzing trace with hash 360314234, now seen corresponding path program 1 times [2020-10-27 00:02:11,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:11,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936976305] [2020-10-27 00:02:11,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:11,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:11,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:12,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:12,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:12,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:13,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:16,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:16,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1391 [2020-10-27 00:02:16,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:02:16,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-27 00:02:16,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:16,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:02:16,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:02:16,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-27 00:02:16,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:16,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:16,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:16,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:16,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:16,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:16,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 00:02:16,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:16,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:16,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:16,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:02:16,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:16,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:17,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:17,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:17,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:17,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:02:17,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:02:17,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-27 00:02:17,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:17,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:17,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:17,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-27 00:02:17,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:17,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:02:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:17,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:17,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:17,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 00:02:17,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:17,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-27 00:02:17,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:17,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:17,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:17,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-27 00:02:17,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:18,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-27 00:02:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:18,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:18,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:18,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:02:18,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:18,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:02:18,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:18,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:18,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 00:02:18,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:18,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:18,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-27 00:02:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:18,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:18,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:18,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:02:18,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:18,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 00:02:18,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:18,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:18,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:02:18,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:18,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:18,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 688 [2020-10-27 00:02:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:18,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:18,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:18,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-27 00:02:18,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:18,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 00:02:18,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:18,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:18,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 248 [2020-10-27 00:02:18,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:18,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:18,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 938 [2020-10-27 00:02:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:18,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:18,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:18,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:02:18,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:18,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:02:18,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:18,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:18,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:02:18,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:18,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:18,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1048 [2020-10-27 00:02:18,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:18,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:18,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:18,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 00:02:18,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:18,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 00:02:18,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:18,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:18,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-27 00:02:18,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:18,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:18,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:02:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:18,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:18,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:18,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 00:02:18,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:18,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:02:18,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:18,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:18,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:18,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:18,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:20,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3067 backedges. 415 proven. 1535 refuted. 0 times theorem prover too weak. 1117 trivial. 0 not checked. [2020-10-27 00:02:20,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936976305] [2020-10-27 00:02:20,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:02:20,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 00:02:20,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896644516] [2020-10-27 00:02:20,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 00:02:20,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:20,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 00:02:20,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-27 00:02:20,909 INFO L87 Difference]: Start difference. First operand 12255 states and 13333 transitions. Second operand 9 states. [2020-10-27 00:02:26,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:26,926 INFO L93 Difference]: Finished difference Result 28322 states and 31097 transitions. [2020-10-27 00:02:26,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 00:02:26,927 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1365 [2020-10-27 00:02:26,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:26,987 INFO L225 Difference]: With dead ends: 28322 [2020-10-27 00:02:26,987 INFO L226 Difference]: Without dead ends: 16317 [2020-10-27 00:02:27,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-10-27 00:02:27,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16317 states. [2020-10-27 00:02:27,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16317 to 13952. [2020-10-27 00:02:27,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13952 states. [2020-10-27 00:02:27,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13952 states to 13952 states and 15185 transitions. [2020-10-27 00:02:27,345 INFO L78 Accepts]: Start accepts. Automaton has 13952 states and 15185 transitions. Word has length 1365 [2020-10-27 00:02:27,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:27,346 INFO L481 AbstractCegarLoop]: Abstraction has 13952 states and 15185 transitions. [2020-10-27 00:02:27,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 00:02:27,347 INFO L276 IsEmpty]: Start isEmpty. Operand 13952 states and 15185 transitions. [2020-10-27 00:02:27,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1400 [2020-10-27 00:02:27,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:27,398 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:02:27,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:02:27,398 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:27,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:27,399 INFO L82 PathProgramCache]: Analyzing trace with hash -246576690, now seen corresponding path program 1 times [2020-10-27 00:02:27,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:27,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902647300] [2020-10-27 00:02:27,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:27,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:28,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:28,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:29,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:32,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:32,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1427 [2020-10-27 00:02:32,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:02:32,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5101 [2020-10-27 00:02:32,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:32,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:32,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-27 00:02:32,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-27 00:02:32,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:32,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:32,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:32,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:32,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:32,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:32,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:02:32,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:32,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:32,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:32,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:32,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:32,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:32,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:33,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:33,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:02:33,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:33,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-27 00:02:33,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:33,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:33,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:33,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-27 00:02:33,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:33,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:02:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:33,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:33,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:33,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:02:33,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:33,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-27 00:02:33,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:33,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:33,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:33,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-27 00:02:33,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:33,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-27 00:02:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:33,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:33,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:33,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:02:33,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:33,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 00:02:33,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:33,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:33,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-27 00:02:33,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:33,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:33,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-27 00:02:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:33,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:33,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:33,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:02:33,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:33,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 00:02:33,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:33,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:33,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 00:02:33,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:33,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:33,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2020-10-27 00:02:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:33,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:33,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:33,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:02:33,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:33,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 00:02:33,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:33,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:33,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:02:33,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:33,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:33,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 722 [2020-10-27 00:02:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:33,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:33,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:33,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-27 00:02:33,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:33,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-27 00:02:33,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:33,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:33,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 248 [2020-10-27 00:02:33,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:33,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:33,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 972 [2020-10-27 00:02:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:33,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:33,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:33,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:02:33,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:33,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 00:02:33,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:33,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:33,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:02:33,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:33,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:33,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1082 [2020-10-27 00:02:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:33,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:34,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:34,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 00:02:34,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:34,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-27 00:02:34,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:34,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:34,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-27 00:02:34,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:34,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:34,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:02:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:34,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:34,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:34,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 00:02:34,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:34,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:02:34,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:34,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:34,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:34,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:34,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:35,426 INFO L134 CoverageAnalysis]: Checked inductivity of 3624 backedges. 359 proven. 731 refuted. 0 times theorem prover too weak. 2534 trivial. 0 not checked. [2020-10-27 00:02:35,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902647300] [2020-10-27 00:02:35,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:02:35,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:02:35,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859991480] [2020-10-27 00:02:35,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:02:35,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:35,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:02:35,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:02:35,428 INFO L87 Difference]: Start difference. First operand 13952 states and 15185 transitions. Second operand 7 states. [2020-10-27 00:02:39,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:39,855 INFO L93 Difference]: Finished difference Result 28669 states and 31184 transitions. [2020-10-27 00:02:39,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:02:39,856 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1399 [2020-10-27 00:02:39,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:39,902 INFO L225 Difference]: With dead ends: 28669 [2020-10-27 00:02:39,902 INFO L226 Difference]: Without dead ends: 14967 [2020-10-27 00:02:39,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:02:39,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14967 states. [2020-10-27 00:02:40,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14967 to 13954. [2020-10-27 00:02:40,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13954 states. [2020-10-27 00:02:40,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13954 states to 13954 states and 15162 transitions. [2020-10-27 00:02:40,196 INFO L78 Accepts]: Start accepts. Automaton has 13954 states and 15162 transitions. Word has length 1399 [2020-10-27 00:02:40,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:40,197 INFO L481 AbstractCegarLoop]: Abstraction has 13954 states and 15162 transitions. [2020-10-27 00:02:40,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:02:40,197 INFO L276 IsEmpty]: Start isEmpty. Operand 13954 states and 15162 transitions. [2020-10-27 00:02:40,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1461 [2020-10-27 00:02:40,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:40,242 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:02:40,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 00:02:40,243 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:40,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:40,243 INFO L82 PathProgramCache]: Analyzing trace with hash 712497756, now seen corresponding path program 1 times [2020-10-27 00:02:40,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:40,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560356467] [2020-10-27 00:02:40,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:40,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:40,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:41,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:41,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:45,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:45,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1488 [2020-10-27 00:02:45,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:02:45,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-27 00:02:45,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:45,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:45,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-27 00:02:45,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:02:45,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:45,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:45,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:45,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:45,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:45,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:45,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:02:45,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:45,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:45,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:45,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:45,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:45,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:45,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:45,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:45,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:02:45,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:45,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 00:02:45,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:45,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:45,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:45,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:45,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:45,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:02:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:45,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:45,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:45,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 00:02:45,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:45,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-27 00:02:45,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:45,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:45,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:45,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 00:02:45,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:46,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-27 00:02:46,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:46,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:46,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:46,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:02:46,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:46,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-27 00:02:46,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:46,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:46,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:46,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:02:46,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:46,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-27 00:02:46,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:46,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:46,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:46,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:02:46,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:46,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:02:46,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:46,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:46,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 00:02:46,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:46,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:46,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-10-27 00:02:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:46,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:46,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:46,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:02:46,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:46,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 00:02:46,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:46,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:46,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:02:46,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:46,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:46,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 783 [2020-10-27 00:02:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:46,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:46,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:46,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-27 00:02:46,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:46,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-27 00:02:46,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:46,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:46,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 248 [2020-10-27 00:02:46,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:46,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:46,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1033 [2020-10-27 00:02:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:46,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:46,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:46,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:02:46,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:46,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:02:46,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:46,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:46,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:02:46,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:46,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:46,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1143 [2020-10-27 00:02:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:46,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:47,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:47,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 00:02:47,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:47,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 00:02:47,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:47,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:47,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-27 00:02:47,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:47,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:47,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:02:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:47,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:47,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:47,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 00:02:47,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:47,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:02:47,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:47,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:47,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:47,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:47,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:48,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3807 backedges. 473 proven. 539 refuted. 0 times theorem prover too weak. 2795 trivial. 0 not checked. [2020-10-27 00:02:48,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560356467] [2020-10-27 00:02:48,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:02:48,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:02:48,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493722055] [2020-10-27 00:02:48,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:02:48,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:02:48,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:02:48,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:02:48,369 INFO L87 Difference]: Start difference. First operand 13954 states and 15162 transitions. Second operand 7 states. [2020-10-27 00:02:52,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:02:52,988 INFO L93 Difference]: Finished difference Result 30038 states and 32609 transitions. [2020-10-27 00:02:52,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:02:52,989 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1460 [2020-10-27 00:02:52,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:02:53,034 INFO L225 Difference]: With dead ends: 30038 [2020-10-27 00:02:53,034 INFO L226 Difference]: Without dead ends: 16334 [2020-10-27 00:02:53,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:02:53,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16334 states. [2020-10-27 00:02:53,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16334 to 15995. [2020-10-27 00:02:53,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15995 states. [2020-10-27 00:02:53,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15995 states to 15995 states and 17288 transitions. [2020-10-27 00:02:53,347 INFO L78 Accepts]: Start accepts. Automaton has 15995 states and 17288 transitions. Word has length 1460 [2020-10-27 00:02:53,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:02:53,348 INFO L481 AbstractCegarLoop]: Abstraction has 15995 states and 17288 transitions. [2020-10-27 00:02:53,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:02:53,349 INFO L276 IsEmpty]: Start isEmpty. Operand 15995 states and 17288 transitions. [2020-10-27 00:02:53,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1463 [2020-10-27 00:02:53,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:02:53,394 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:02:53,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 00:02:53,394 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:02:53,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:02:53,395 INFO L82 PathProgramCache]: Analyzing trace with hash -835112296, now seen corresponding path program 1 times [2020-10-27 00:02:53,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:02:53,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386978764] [2020-10-27 00:02:53,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:02:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:53,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:53,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:54,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:54,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:58,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:58,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1490 [2020-10-27 00:02:58,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:02:58,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-27 00:02:58,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:58,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:58,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-27 00:02:58,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:02:58,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:58,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:02:58,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:58,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:58,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:58,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:02:58,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:58,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:02:58,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:58,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:58,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:58,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:58,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:58,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:02:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:58,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:59,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:59,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:02:59,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:59,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 00:02:59,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:59,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:59,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:59,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:59,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:59,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:02:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:59,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:59,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:59,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 00:02:59,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:59,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-27 00:02:59,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:59,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:02:59,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:02:59,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-27 00:02:59,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:59,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-27 00:02:59,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:59,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:59,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:59,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:02:59,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:59,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-27 00:02:59,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:59,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:02:59,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:02:59,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:02:59,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:59,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-27 00:02:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:02:59,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:02:59,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:02:59,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:02:59,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:02:59,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:02:59,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:02:59,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:02:59,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 00:02:59,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:02:59,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:02:59,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 670 [2020-10-27 00:03:00,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:00,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:00,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:00,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:03:00,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:00,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 00:03:00,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:00,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:00,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:03:00,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:00,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:00,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 785 [2020-10-27 00:03:00,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:00,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:00,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:00,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-27 00:03:00,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:00,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-27 00:03:00,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:00,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:00,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 248 [2020-10-27 00:03:00,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:00,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:00,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1035 [2020-10-27 00:03:00,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:00,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:00,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:00,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:03:00,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:00,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 00:03:00,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:00,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:00,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:03:00,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:00,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:00,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1145 [2020-10-27 00:03:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:00,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:00,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:00,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 00:03:00,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:00,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-27 00:03:00,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:00,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:00,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-27 00:03:00,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:00,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:00,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:03:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:00,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:00,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:00,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 00:03:00,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:00,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:03:00,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:00,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:00,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:00,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:00,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:02,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3813 backedges. 473 proven. 539 refuted. 0 times theorem prover too weak. 2801 trivial. 0 not checked. [2020-10-27 00:03:02,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386978764] [2020-10-27 00:03:02,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:02,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:03:02,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668571659] [2020-10-27 00:03:02,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:03:02,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:02,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:03:02,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:03:02,232 INFO L87 Difference]: Start difference. First operand 15995 states and 17288 transitions. Second operand 8 states. [2020-10-27 00:03:07,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:07,142 INFO L93 Difference]: Finished difference Result 36828 states and 39829 transitions. [2020-10-27 00:03:07,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:03:07,143 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1462 [2020-10-27 00:03:07,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:07,197 INFO L225 Difference]: With dead ends: 36828 [2020-10-27 00:03:07,197 INFO L226 Difference]: Without dead ends: 21083 [2020-10-27 00:03:07,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:03:07,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21083 states. [2020-10-27 00:03:07,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21083 to 19385. [2020-10-27 00:03:07,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19385 states. [2020-10-27 00:03:07,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19385 states to 19385 states and 20987 transitions. [2020-10-27 00:03:07,630 INFO L78 Accepts]: Start accepts. Automaton has 19385 states and 20987 transitions. Word has length 1462 [2020-10-27 00:03:07,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:07,631 INFO L481 AbstractCegarLoop]: Abstraction has 19385 states and 20987 transitions. [2020-10-27 00:03:07,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:03:07,631 INFO L276 IsEmpty]: Start isEmpty. Operand 19385 states and 20987 transitions. [2020-10-27 00:03:07,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1509 [2020-10-27 00:03:07,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:07,671 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:03:07,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 00:03:07,671 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:07,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:07,672 INFO L82 PathProgramCache]: Analyzing trace with hash 137839992, now seen corresponding path program 1 times [2020-10-27 00:03:07,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:07,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528480097] [2020-10-27 00:03:07,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:08,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:08,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:09,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:09,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:13,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:13,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1538 [2020-10-27 00:03:13,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:03:13,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5109 [2020-10-27 00:03:13,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:13,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:13,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 726 [2020-10-27 00:03:13,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 00:03:13,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:13,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:13,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:13,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:13,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:13,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:13,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:13,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:03:13,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:13,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:13,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:13,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:13,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:13,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:13,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:13,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:13,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:03:13,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:13,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:03:13,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:13,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:13,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:13,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:13,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:13,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:03:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:13,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:13,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:13,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:03:13,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:13,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 00:03:13,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:13,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:13,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:13,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:13,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:13,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:03:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:13,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:13,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:13,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:03:13,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:13,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 00:03:13,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:13,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:13,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:13,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:13,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:13,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:03:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:13,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:13,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:13,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:03:13,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:13,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-27 00:03:13,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:13,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:13,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:13,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:13,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:13,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:03:13,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:13,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:13,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:13,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:03:13,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:13,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:03:13,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:13,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:13,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:13,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 00:03:13,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:13,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-27 00:03:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:14,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:14,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:14,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:03:14,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:14,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-27 00:03:14,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:14,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:14,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:14,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 00:03:14,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:14,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-10-27 00:03:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:14,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:14,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:14,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-27 00:03:14,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:14,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-27 00:03:14,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:14,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:14,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 248 [2020-10-27 00:03:14,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:14,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:14,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1081 [2020-10-27 00:03:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:14,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:14,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:14,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:03:14,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:14,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:03:14,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:14,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:14,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:03:14,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:14,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:14,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1191 [2020-10-27 00:03:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:14,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:14,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:14,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 00:03:14,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:14,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 00:03:14,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:14,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:14,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-27 00:03:14,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:14,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:14,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:03:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:14,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:14,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:14,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 00:03:14,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:14,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:03:14,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:14,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:14,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:14,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:14,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:15,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4439 backedges. 778 proven. 333 refuted. 0 times theorem prover too weak. 3328 trivial. 0 not checked. [2020-10-27 00:03:15,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528480097] [2020-10-27 00:03:15,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:15,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:03:15,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303925938] [2020-10-27 00:03:15,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:03:15,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:15,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:03:15,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:03:15,765 INFO L87 Difference]: Start difference. First operand 19385 states and 20987 transitions. Second operand 7 states. [2020-10-27 00:03:22,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:22,008 INFO L93 Difference]: Finished difference Result 42244 states and 45697 transitions. [2020-10-27 00:03:22,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:03:22,009 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1508 [2020-10-27 00:03:22,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:22,069 INFO L225 Difference]: With dead ends: 42244 [2020-10-27 00:03:22,070 INFO L226 Difference]: Without dead ends: 23109 [2020-10-27 00:03:22,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:03:22,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23109 states. [2020-10-27 00:03:22,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23109 to 22433. [2020-10-27 00:03:22,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22433 states. [2020-10-27 00:03:22,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22433 states to 22433 states and 24139 transitions. [2020-10-27 00:03:22,570 INFO L78 Accepts]: Start accepts. Automaton has 22433 states and 24139 transitions. Word has length 1508 [2020-10-27 00:03:22,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:22,571 INFO L481 AbstractCegarLoop]: Abstraction has 22433 states and 24139 transitions. [2020-10-27 00:03:22,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:03:22,572 INFO L276 IsEmpty]: Start isEmpty. Operand 22433 states and 24139 transitions. [2020-10-27 00:03:22,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1582 [2020-10-27 00:03:22,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:22,615 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:03:22,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 00:03:22,616 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:22,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:22,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1504870170, now seen corresponding path program 1 times [2020-10-27 00:03:22,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:22,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212842077] [2020-10-27 00:03:22,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:23,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:23,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:23,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:24,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:27,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:27,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1609 [2020-10-27 00:03:27,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:03:27,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 00:03:27,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:27,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:27,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 797 [2020-10-27 00:03:27,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 00:03:27,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:28,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:28,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:28,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:28,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:28,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:28,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:03:28,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:28,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:28,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:28,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:28,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:28,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:28,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:28,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:28,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:28,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:03:28,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:28,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 00:03:28,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:28,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:28,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:28,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:28,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:28,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:03:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:28,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:28,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:28,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 00:03:28,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:28,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 00:03:28,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:28,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:28,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:28,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:28,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:28,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-27 00:03:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:28,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:28,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:28,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-27 00:03:28,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:28,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 00:03:28,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:28,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:28,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:28,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:28,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:28,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-10-27 00:03:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:28,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:28,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:28,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 00:03:28,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:28,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 00:03:28,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:28,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:28,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:28,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-27 00:03:28,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:28,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 789 [2020-10-27 00:03:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:28,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:28,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:28,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:03:28,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:28,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-27 00:03:28,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:28,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:28,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:28,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 00:03:28,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:28,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 904 [2020-10-27 00:03:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:28,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:29,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:29,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-27 00:03:29,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:29,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 00:03:29,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:29,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:29,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 248 [2020-10-27 00:03:29,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:29,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:29,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1154 [2020-10-27 00:03:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:29,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:29,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:29,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:03:29,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:29,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:03:29,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:29,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:29,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:03:29,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:29,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:29,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1264 [2020-10-27 00:03:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:29,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:29,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:29,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 00:03:29,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:29,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-27 00:03:29,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:29,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:29,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-27 00:03:29,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:29,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 00:03:29,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:03:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:29,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:29,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:29,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 00:03:29,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:29,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:03:29,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:29,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:29,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:29,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:29,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:30,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4441 backedges. 687 proven. 333 refuted. 0 times theorem prover too weak. 3421 trivial. 0 not checked. [2020-10-27 00:03:30,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212842077] [2020-10-27 00:03:30,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:30,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:03:30,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806295440] [2020-10-27 00:03:30,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:03:30,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:30,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:03:30,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:03:30,703 INFO L87 Difference]: Start difference. First operand 22433 states and 24139 transitions. Second operand 7 states. [2020-10-27 00:03:36,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:36,725 INFO L93 Difference]: Finished difference Result 46987 states and 50551 transitions. [2020-10-27 00:03:36,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:03:36,726 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1581 [2020-10-27 00:03:36,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:36,792 INFO L225 Difference]: With dead ends: 46987 [2020-10-27 00:03:36,792 INFO L226 Difference]: Without dead ends: 24804 [2020-10-27 00:03:36,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:03:36,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24804 states. [2020-10-27 00:03:37,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24804 to 24465. [2020-10-27 00:03:37,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24465 states. [2020-10-27 00:03:37,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24465 states to 24465 states and 26279 transitions. [2020-10-27 00:03:37,297 INFO L78 Accepts]: Start accepts. Automaton has 24465 states and 26279 transitions. Word has length 1581 [2020-10-27 00:03:37,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:37,298 INFO L481 AbstractCegarLoop]: Abstraction has 24465 states and 26279 transitions. [2020-10-27 00:03:37,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:03:37,298 INFO L276 IsEmpty]: Start isEmpty. Operand 24465 states and 26279 transitions. [2020-10-27 00:03:37,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1602 [2020-10-27 00:03:37,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:37,339 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:03:37,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 00:03:37,340 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:37,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:37,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1257152078, now seen corresponding path program 1 times [2020-10-27 00:03:37,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:37,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179316676] [2020-10-27 00:03:37,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:37,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:38,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:38,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:40,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:42,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:42,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1631 [2020-10-27 00:03:42,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:03:42,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5110 [2020-10-27 00:03:42,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:42,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:42,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-27 00:03:42,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 00:03:42,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:42,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:42,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:42,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:42,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:42,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:42,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:03:42,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:42,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:42,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:42,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:42,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:42,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:42,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:43,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:43,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:03:43,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:43,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 00:03:43,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:43,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:43,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:43,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:43,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:43,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:03:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:43,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:43,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:43,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:03:43,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:43,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 00:03:43,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:43,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:43,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:43,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:43,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:43,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:03:43,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:43,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:43,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:43,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:03:43,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:43,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 00:03:43,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:43,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:43,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:43,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:43,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:43,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:03:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:43,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:43,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:43,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:03:43,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:43,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 00:03:43,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:43,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:43,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:43,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:43,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:43,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:03:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:43,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:43,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:43,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 00:03:43,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:43,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-27 00:03:43,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:43,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:43,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:43,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-27 00:03:43,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:43,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-27 00:03:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:43,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:43,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:43,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 00:03:43,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:43,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 00:03:43,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:43,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:43,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:43,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 00:03:43,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:44,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 924 [2020-10-27 00:03:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:44,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:44,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:44,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-27 00:03:44,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:44,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 00:03:44,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:44,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:44,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 248 [2020-10-27 00:03:44,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:44,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:44,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1174 [2020-10-27 00:03:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:44,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:44,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:44,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:03:44,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:44,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 00:03:44,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:44,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:44,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:03:44,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:44,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:44,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1284 [2020-10-27 00:03:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:44,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:44,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:44,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 00:03:44,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:44,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-27 00:03:44,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:44,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:44,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-27 00:03:44,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:44,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:44,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:03:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:44,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:44,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:44,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 00:03:44,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:44,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:03:44,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:44,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:03:44,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:44,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:03:44,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:46,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4844 backedges. 678 proven. 242 refuted. 0 times theorem prover too weak. 3924 trivial. 0 not checked. [2020-10-27 00:03:46,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179316676] [2020-10-27 00:03:46,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:03:46,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:03:46,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753813251] [2020-10-27 00:03:46,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:03:46,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:46,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:03:46,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:03:46,108 INFO L87 Difference]: Start difference. First operand 24465 states and 26279 transitions. Second operand 7 states.