/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/Problem17_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:09:02,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:09:02,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:09:02,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:09:02,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:09:02,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:09:02,443 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:09:02,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:09:02,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:09:02,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:09:02,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:09:02,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:09:02,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:09:02,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:09:02,457 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:09:02,458 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:09:02,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:09:02,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:09:02,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:09:02,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:09:02,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:09:02,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:09:02,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:09:02,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:09:02,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:09:02,477 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:09:02,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:09:02,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:09:02,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:09:02,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-27 00:09:02,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:09:02,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:09:02,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:09:02,500 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 00:09:02,554 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:09:02,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:09:02,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:09:02,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:09:02,557 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:09:02,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:09:02,557 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:09:02,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:09:02,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:09:02,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:09:02,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:09:02,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:09:02,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:09:02,559 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:09:02,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:09:02,560 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:09:02,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:09:02,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:09:02,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:09:02,561 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:09:02,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:09:02,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:09:02,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:09:02,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:09:02,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:09:02,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:09:02,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:09:02,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:09:02,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:09:02,563 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:09:02,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:09:03,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:09:03,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:09:03,008 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:09:03,009 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:09:03,011 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label14.c [2020-10-27 00:09:03,118 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19496c1b1/5c22e0fae7854ee38fd33ad4e4754549/FLAG4e52f1bab [2020-10-27 00:09:04,196 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:09:04,197 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label14.c [2020-10-27 00:09:04,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19496c1b1/5c22e0fae7854ee38fd33ad4e4754549/FLAG4e52f1bab [2020-10-27 00:09:04,706 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19496c1b1/5c22e0fae7854ee38fd33ad4e4754549 [2020-10-27 00:09:04,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:09:04,720 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:09:04,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:09:04,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:09:04,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:09:04,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:09:04" (1/1) ... [2020-10-27 00:09:04,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42584668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:09:04, skipping insertion in model container [2020-10-27 00:09:04,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:09:04" (1/1) ... [2020-10-27 00:09:04,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:09:04,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:09:06,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:09:06,166 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:09:06,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:09:06,806 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:09:06,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:09:06 WrapperNode [2020-10-27 00:09:06,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:09:06,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:09:06,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:09:06,808 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:09:06,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:09:06" (1/1) ... [2020-10-27 00:09:06,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:09:06" (1/1) ... [2020-10-27 00:09:06,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:09:06" (1/1) ... [2020-10-27 00:09:06,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:09:06" (1/1) ... [2020-10-27 00:09:07,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:09:06" (1/1) ... [2020-10-27 00:09:07,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:09:06" (1/1) ... [2020-10-27 00:09:07,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:09:06" (1/1) ... [2020-10-27 00:09:07,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:09:07,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:09:07,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:09:07,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:09:07,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:09:06" (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 00:09:07,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:09:07,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:09:07,240 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:09:07,240 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:09:07,241 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:09:07,241 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:09:07,241 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:09:07,242 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:09:07,242 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:09:07,242 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:09:07,243 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:09:07,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:09:07,244 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:09:07,244 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:09:07,244 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:09:07,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:09:07,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:09:07,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:09:07,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:09:07,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:09:07,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:09:17,034 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:09:17,034 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:09:17,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:09:17 BoogieIcfgContainer [2020-10-27 00:09:17,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:09:17,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:09:17,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:09:17,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:09:17,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:09:04" (1/3) ... [2020-10-27 00:09:17,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e4c4b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:09:17, skipping insertion in model container [2020-10-27 00:09:17,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:09:06" (2/3) ... [2020-10-27 00:09:17,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e4c4b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:09:17, skipping insertion in model container [2020-10-27 00:09:17,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:09:17" (3/3) ... [2020-10-27 00:09:17,050 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label14.c [2020-10-27 00:09:17,066 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:09:17,073 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:09:17,090 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:09:17,126 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:09:17,127 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:09:17,127 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:09:17,127 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:09:17,127 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:09:17,128 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:09:17,128 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:09:17,128 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:09:17,162 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-27 00:09:17,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 00:09:17,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:09:17,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:09:17,174 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:09:17,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:09:17,182 INFO L82 PathProgramCache]: Analyzing trace with hash 357539482, now seen corresponding path program 1 times [2020-10-27 00:09:17,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:09:17,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030922456] [2020-10-27 00:09:17,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:09:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:09:17,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:09:18,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:09:18,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 00:09:18,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:09:18,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 691 [2020-10-27 00:09:18,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:09:18,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:09:18,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:09:18,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 00:09:18,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:09:18,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:09:18,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:09:18,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:09:18,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:09:18,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:09:18,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:09:18,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 00:09:18,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:09:18,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:09:18,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:09:18,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:09:18,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:09:18,427 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 00:09:18,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030922456] [2020-10-27 00:09:18,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:09:18,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 00:09:18,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996553821] [2020-10-27 00:09:18,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 00:09:18,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:09:18,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 00:09:18,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 00:09:18,465 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-27 00:09:18,630 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 00:09:31,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:09:31,212 INFO L93 Difference]: Finished difference Result 1721 states and 3132 transitions. [2020-10-27 00:09:31,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 00:09:31,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-10-27 00:09:31,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:09:31,261 INFO L225 Difference]: With dead ends: 1721 [2020-10-27 00:09:31,261 INFO L226 Difference]: Without dead ends: 1035 [2020-10-27 00:09:31,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:09:31,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2020-10-27 00:09:31,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 1009. [2020-10-27 00:09:31,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2020-10-27 00:09:31,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1706 transitions. [2020-10-27 00:09:31,474 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1706 transitions. Word has length 54 [2020-10-27 00:09:31,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:09:31,476 INFO L481 AbstractCegarLoop]: Abstraction has 1009 states and 1706 transitions. [2020-10-27 00:09:31,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 00:09:31,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1706 transitions. [2020-10-27 00:09:31,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-27 00:09:31,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:09:31,496 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, 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] [2020-10-27 00:09:31,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:09:31,497 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:09:31,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:09:31,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1342805378, now seen corresponding path program 1 times [2020-10-27 00:09:31,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:09:31,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528220427] [2020-10-27 00:09:31,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:09:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:09:31,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:09:32,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:09:33,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:09:33,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 00:09:33,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:09:33,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1541 [2020-10-27 00:09:33,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:09:33,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:09:33,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:09:33,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 00:09:33,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:09:33,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:09:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:09:33,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:09:33,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:09:33,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:09:33,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:09:33,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 00:09:33,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:09:33,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:09:33,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:09:33,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:09:33,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:09:33,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:09:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:09:33,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:09:33,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:09:33,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:09:33,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:09:33,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-27 00:09:33,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:09:33,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:09:33,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:09:33,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 00:09:33,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:09:33,814 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:09:33,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528220427] [2020-10-27 00:09:33,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:09:33,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:09:33,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499548831] [2020-10-27 00:09:33,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:09:33,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:09:33,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:09:33,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:09:33,824 INFO L87 Difference]: Start difference. First operand 1009 states and 1706 transitions. Second operand 7 states. [2020-10-27 00:09:51,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:09:51,707 INFO L93 Difference]: Finished difference Result 2995 states and 5150 transitions. [2020-10-27 00:09:51,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:09:51,709 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-10-27 00:09:51,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:09:51,728 INFO L225 Difference]: With dead ends: 2995 [2020-10-27 00:09:51,728 INFO L226 Difference]: Without dead ends: 1992 [2020-10-27 00:09:51,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:09:51,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2020-10-27 00:09:51,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1919. [2020-10-27 00:09:51,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1919 states. [2020-10-27 00:09:51,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 2842 transitions. [2020-10-27 00:09:51,857 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 2842 transitions. Word has length 123 [2020-10-27 00:09:51,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:09:51,860 INFO L481 AbstractCegarLoop]: Abstraction has 1919 states and 2842 transitions. [2020-10-27 00:09:51,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:09:51,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 2842 transitions. [2020-10-27 00:09:51,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-27 00:09:51,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:09:51,868 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, 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] [2020-10-27 00:09:51,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:09:51,869 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:09:51,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:09:51,870 INFO L82 PathProgramCache]: Analyzing trace with hash 158808202, now seen corresponding path program 1 times [2020-10-27 00:09:51,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:09:51,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030167062] [2020-10-27 00:09:51,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:09:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:09:51,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:09:52,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:09:52,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:09:53,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:09:53,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 00:09:53,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:09:53,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1264 [2020-10-27 00:09:53,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:09:53,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:09:53,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:09:53,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 00:09:53,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:09:53,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:09:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:09:53,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:09:53,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:09:53,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:09:53,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:09:53,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 00:09:53,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:09:53,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:09:53,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:09:53,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:09:53,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:09:53,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:09:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:09:53,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:09:53,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:09:53,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 00:09:53,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:09:53,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-27 00:09:53,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:09:53,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:09:53,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:09:53,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 00:09:53,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:09:53,943 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:09:53,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030167062] [2020-10-27 00:09:53,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:09:53,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:09:53,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623544994] [2020-10-27 00:09:53,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:09:53,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:09:53,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:09:53,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:09:53,947 INFO L87 Difference]: Start difference. First operand 1919 states and 2842 transitions. Second operand 7 states. [2020-10-27 00:10:11,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:10:11,170 INFO L93 Difference]: Finished difference Result 4341 states and 6771 transitions. [2020-10-27 00:10:11,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:10:11,172 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2020-10-27 00:10:11,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:10:11,191 INFO L225 Difference]: With dead ends: 4341 [2020-10-27 00:10:11,191 INFO L226 Difference]: Without dead ends: 2428 [2020-10-27 00:10:11,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:10:11,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2428 states. [2020-10-27 00:10:11,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2428 to 1927. [2020-10-27 00:10:11,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1927 states. [2020-10-27 00:10:11,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1927 states to 1927 states and 2654 transitions. [2020-10-27 00:10:11,282 INFO L78 Accepts]: Start accepts. Automaton has 1927 states and 2654 transitions. Word has length 133 [2020-10-27 00:10:11,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:10:11,286 INFO L481 AbstractCegarLoop]: Abstraction has 1927 states and 2654 transitions. [2020-10-27 00:10:11,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:10:11,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1927 states and 2654 transitions. [2020-10-27 00:10:11,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-27 00:10:11,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:10:11,293 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-27 00:10:11,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:10:11,294 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:10:11,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:10:11,300 INFO L82 PathProgramCache]: Analyzing trace with hash 935637406, now seen corresponding path program 1 times [2020-10-27 00:10:11,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:10:11,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860666661] [2020-10-27 00:10:11,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:10:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:10:11,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:10:11,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:10:13,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:10:13,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:10:13,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 00:10:13,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:10:13,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1701 [2020-10-27 00:10:13,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:10:13,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:10:13,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-27 00:10:13,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 00:10:13,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:10:13,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:10:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:10:13,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:10:13,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:10:13,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:10:13,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:10:13,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 00:10:13,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:10:13,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:10:13,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:10:13,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:10:13,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:10:13,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:10:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:10:13,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:10:13,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:10:13,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 00:10:13,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:10:13,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-27 00:10:13,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:10:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:10:13,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:10:13,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:10:13,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:10:13,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 00:10:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:10:13,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:10:13,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:10:13,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:10:13,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:10:13,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-27 00:10:13,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:10:13,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:10:13,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:10:13,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 00:10:13,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:10:13,840 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 00:10:13,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860666661] [2020-10-27 00:10:13,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:10:13,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:10:13,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120661483] [2020-10-27 00:10:13,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:10:13,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:10:13,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:10:13,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:10:13,844 INFO L87 Difference]: Start difference. First operand 1927 states and 2654 transitions. Second operand 8 states. [2020-10-27 00:10:32,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:10:32,669 INFO L93 Difference]: Finished difference Result 4791 states and 6991 transitions. [2020-10-27 00:10:32,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:10:32,671 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 210 [2020-10-27 00:10:32,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:10:32,691 INFO L225 Difference]: With dead ends: 4791 [2020-10-27 00:10:32,691 INFO L226 Difference]: Without dead ends: 2870 [2020-10-27 00:10:32,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:10:32,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2020-10-27 00:10:32,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 2835. [2020-10-27 00:10:32,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2835 states. [2020-10-27 00:10:32,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 3963 transitions. [2020-10-27 00:10:32,793 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 3963 transitions. Word has length 210 [2020-10-27 00:10:32,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:10:32,794 INFO L481 AbstractCegarLoop]: Abstraction has 2835 states and 3963 transitions. [2020-10-27 00:10:32,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:10:32,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 3963 transitions. [2020-10-27 00:10:32,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-27 00:10:32,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:10:32,799 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-27 00:10:32,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:10:32,800 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:10:32,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:10:32,800 INFO L82 PathProgramCache]: Analyzing trace with hash -344600462, now seen corresponding path program 1 times [2020-10-27 00:10:32,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:10:32,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528213804] [2020-10-27 00:10:32,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:10:32,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:10:32,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:10:33,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:10:34,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:10:37,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:10:37,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-27 00:10:37,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:10:37,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-27 00:10:37,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:10:37,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 00:10:37,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:10:37,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-27 00:10:37,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:10:38,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:10:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:10:38,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:10:38,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:10:38,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:10:38,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:10:38,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 00:10:38,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:10:38,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:10:38,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:10:38,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:10:38,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:10:38,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:10:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:10:38,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:10:38,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:10:38,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 00:10:38,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:10:38,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-27 00:10:38,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:10:38,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:10:38,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:10:38,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 00:10:38,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:10:38,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 00:10:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:10:38,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:10:38,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:10:38,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 00:10:38,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:10:38,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-27 00:10:38,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:10:38,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:10:38,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:10:38,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 00:10:38,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:10:38,975 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 93 proven. 73 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 00:10:38,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528213804] [2020-10-27 00:10:38,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:10:38,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 00:10:38,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459139996] [2020-10-27 00:10:38,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 00:10:38,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:10:38,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 00:10:38,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:10:38,978 INFO L87 Difference]: Start difference. First operand 2835 states and 3963 transitions. Second operand 10 states. [2020-10-27 00:10:39,238 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-27 00:10:44,998 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-10-27 00:11:07,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:11:07,187 INFO L93 Difference]: Finished difference Result 9077 states and 13062 transitions. [2020-10-27 00:11:07,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 00:11:07,189 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 216 [2020-10-27 00:11:07,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:11:07,225 INFO L225 Difference]: With dead ends: 9077 [2020-10-27 00:11:07,226 INFO L226 Difference]: Without dead ends: 5793 [2020-10-27 00:11:07,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2020-10-27 00:11:07,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5793 states. [2020-10-27 00:11:07,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5793 to 5566. [2020-10-27 00:11:07,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5566 states. [2020-10-27 00:11:07,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5566 states to 5566 states and 7007 transitions. [2020-10-27 00:11:07,413 INFO L78 Accepts]: Start accepts. Automaton has 5566 states and 7007 transitions. Word has length 216 [2020-10-27 00:11:07,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:11:07,414 INFO L481 AbstractCegarLoop]: Abstraction has 5566 states and 7007 transitions. [2020-10-27 00:11:07,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 00:11:07,414 INFO L276 IsEmpty]: Start isEmpty. Operand 5566 states and 7007 transitions. [2020-10-27 00:11:07,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-27 00:11:07,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:11:07,419 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-27 00:11:07,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:11:07,419 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:11:07,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:11:07,420 INFO L82 PathProgramCache]: Analyzing trace with hash 522933288, now seen corresponding path program 1 times [2020-10-27 00:11:07,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:11:07,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687468465] [2020-10-27 00:11:07,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:11:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:11:07,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:11:07,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:11:07,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:11:12,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:11:12,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-27 00:11:12,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:11:12,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-27 00:11:12,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:11:12,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:11:12,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-27 00:11:12,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-27 00:11:12,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:11:12,746 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 00:11:12,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:11:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:11:12,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:11:12,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:11:12,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:11:12,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:11:12,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 00:11:12,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:11:12,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:11:12,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:11:12,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:11:12,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:11:12,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:11:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:11:12,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:11:12,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:11:12,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 00:11:12,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:11:12,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-27 00:11:12,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:11:12,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:11:12,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:11:12,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:11:12,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:11:13,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 00:11:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:11:13,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:11:13,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:11:13,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:11:13,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 00:11:13,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:11:13,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-27 00:11:13,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:11:13,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:11:13,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:11:13,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 00:11:13,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:11:13,710 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 127 proven. 50 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 00:11:13,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687468465] [2020-10-27 00:11:13,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:11:13,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:11:13,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433829365] [2020-10-27 00:11:13,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:11:13,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:11:13,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:11:13,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:11:13,718 INFO L87 Difference]: Start difference. First operand 5566 states and 7007 transitions. Second operand 7 states. [2020-10-27 00:11:30,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:11:30,553 INFO L93 Difference]: Finished difference Result 11157 states and 14480 transitions. [2020-10-27 00:11:30,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:11:30,555 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 227 [2020-10-27 00:11:30,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:11:30,589 INFO L225 Difference]: With dead ends: 11157 [2020-10-27 00:11:30,589 INFO L226 Difference]: Without dead ends: 6032 [2020-10-27 00:11:30,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 00:11:30,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6032 states. [2020-10-27 00:11:30,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6032 to 6016. [2020-10-27 00:11:30,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6016 states. [2020-10-27 00:11:30,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6016 states to 6016 states and 7837 transitions. [2020-10-27 00:11:30,788 INFO L78 Accepts]: Start accepts. Automaton has 6016 states and 7837 transitions. Word has length 227 [2020-10-27 00:11:30,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:11:30,789 INFO L481 AbstractCegarLoop]: Abstraction has 6016 states and 7837 transitions. [2020-10-27 00:11:30,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:11:30,789 INFO L276 IsEmpty]: Start isEmpty. Operand 6016 states and 7837 transitions. [2020-10-27 00:11:30,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-27 00:11:30,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:11:30,797 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, 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, 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] [2020-10-27 00:11:30,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:11:30,797 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:11:30,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:11:30,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1980313217, now seen corresponding path program 1 times [2020-10-27 00:11:30,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:11:30,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272529067] [2020-10-27 00:11:30,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:11:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:11:30,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:11:31,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:11:31,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:11:31,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:11:35,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:11:35,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-27 00:11:35,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:11:35,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 00:11:35,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:11:35,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 00:11:35,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:11:35,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 00:11:35,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:11:36,256 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 00:11:36,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:11:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:11:36,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:11:36,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:11:36,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:11:36,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:11:36,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 00:11:36,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:11:36,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:11:36,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:11:36,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:11:36,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:11:36,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:11:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:11:36,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:11:36,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:11:36,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 00:11:36,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:11:36,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-27 00:11:36,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:11:36,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:11:36,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:11:36,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 00:11:36,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:11:37,119 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 26 [2020-10-27 00:11:37,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 00:11:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:11:37,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:11:37,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:11:37,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:11:37,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 00:11:37,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:11:37,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-27 00:11:37,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:11:37,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:11:37,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:11:37,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 00:11:37,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:11:37,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-27 00:11:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:11:37,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:11:37,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:11:37,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 00:11:37,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:11:37,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 00:11:37,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:11:37,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:11:37,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-27 00:11:37,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:11:37,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:11:38,287 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 143 proven. 211 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 00:11:38,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272529067] [2020-10-27 00:11:38,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:11:38,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 00:11:38,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799987890] [2020-10-27 00:11:38,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 00:11:38,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:11:38,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 00:11:38,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:11:38,291 INFO L87 Difference]: Start difference. First operand 6016 states and 7837 transitions. Second operand 10 states. [2020-10-27 00:11:38,626 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2020-10-27 00:11:39,297 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-10-27 00:11:39,660 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 78 [2020-10-27 00:11:45,184 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 69 [2020-10-27 00:11:46,519 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 73 [2020-10-27 00:11:52,850 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 27 [2020-10-27 00:12:06,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:12:06,779 INFO L93 Difference]: Finished difference Result 12026 states and 16114 transitions. [2020-10-27 00:12:06,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 00:12:06,782 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 290 [2020-10-27 00:12:06,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:12:06,833 INFO L225 Difference]: With dead ends: 12026 [2020-10-27 00:12:06,833 INFO L226 Difference]: Without dead ends: 6420 [2020-10-27 00:12:06,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2020-10-27 00:12:06,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6420 states. [2020-10-27 00:12:07,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6420 to 6086. [2020-10-27 00:12:07,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6086 states. [2020-10-27 00:12:07,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6086 states to 6086 states and 7943 transitions. [2020-10-27 00:12:07,044 INFO L78 Accepts]: Start accepts. Automaton has 6086 states and 7943 transitions. Word has length 290 [2020-10-27 00:12:07,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:12:07,045 INFO L481 AbstractCegarLoop]: Abstraction has 6086 states and 7943 transitions. [2020-10-27 00:12:07,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 00:12:07,045 INFO L276 IsEmpty]: Start isEmpty. Operand 6086 states and 7943 transitions. [2020-10-27 00:12:07,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-27 00:12:07,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:12:07,052 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:12:07,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:12:07,053 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:12:07,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:12:07,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1306151164, now seen corresponding path program 1 times [2020-10-27 00:12:07,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:12:07,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20229019] [2020-10-27 00:12:07,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:12:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:12:07,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:12:07,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:12:07,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:12:11,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:12:12,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:12:12,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-27 00:12:12,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:12:12,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-27 00:12:12,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:12:12,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 00:12:12,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:12:12,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-27 00:12:12,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:12:12,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:12:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:12:12,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:12:12,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:12:12,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:12:12,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:12:12,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 00:12:12,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:12:12,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:12:12,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:12:12,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:12:12,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:12:12,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:12:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:12:12,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:12:12,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:12:12,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 00:12:12,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:12:12,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-27 00:12:12,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:12:12,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:12:12,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:12:12,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 00:12:12,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 00:12:12,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 00:12:12,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:12:12,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:12:12,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:12:12,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 00:12:12,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:12:12,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-27 00:12:12,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:12:12,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:12:12,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:12:12,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 00:12:12,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:12:13,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-27 00:12:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:12:13,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:12:13,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:12:13,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 00:12:13,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:12:13,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 00:12:13,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:12:13,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:12:13,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:12:13,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 00:12:13,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:12:13,317 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 140 proven. 159 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-27 00:12:13,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20229019] [2020-10-27 00:12:13,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:12:13,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 00:12:13,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533005250] [2020-10-27 00:12:13,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 00:12:13,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:12:13,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 00:12:13,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:12:13,321 INFO L87 Difference]: Start difference. First operand 6086 states and 7943 transitions. Second operand 10 states. [2020-10-27 00:12:13,595 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-27 00:12:14,426 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 00:12:22,273 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-10-27 00:12:22,943 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 00:12:43,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:12:44,000 INFO L93 Difference]: Finished difference Result 14720 states and 20260 transitions. [2020-10-27 00:12:44,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 00:12:44,010 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 302 [2020-10-27 00:12:44,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:12:44,054 INFO L225 Difference]: With dead ends: 14720 [2020-10-27 00:12:44,054 INFO L226 Difference]: Without dead ends: 8627 [2020-10-27 00:12:44,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2020-10-27 00:12:44,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8627 states. [2020-10-27 00:12:44,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8627 to 7896. [2020-10-27 00:12:44,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7896 states. [2020-10-27 00:12:44,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7896 states to 7896 states and 10059 transitions. [2020-10-27 00:12:44,341 INFO L78 Accepts]: Start accepts. Automaton has 7896 states and 10059 transitions. Word has length 302 [2020-10-27 00:12:44,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:12:44,342 INFO L481 AbstractCegarLoop]: Abstraction has 7896 states and 10059 transitions. [2020-10-27 00:12:44,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 00:12:44,342 INFO L276 IsEmpty]: Start isEmpty. Operand 7896 states and 10059 transitions. [2020-10-27 00:12:44,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-27 00:12:44,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:12:44,352 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, 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, 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] [2020-10-27 00:12:44,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:12:44,353 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:12:44,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:12:44,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1489302369, now seen corresponding path program 1 times [2020-10-27 00:12:44,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:12:44,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584332062] [2020-10-27 00:12:44,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:12:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:12:44,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:12:44,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:12:45,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:12:45,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:12:48,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:12:49,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:12:49,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-27 00:12:49,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:12:49,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 00:12:49,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:12:49,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:12:49,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-27 00:12:49,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 00:12:49,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:12:49,622 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 00:12:49,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:12:49,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:12:49,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:12:49,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:12:49,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:12:49,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:12:49,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:12:49,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:12:49,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:12:49,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:12:49,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:12:49,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:12:49,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:12:49,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:12:49,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:12:49,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:12:49,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 00:12:49,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:12:49,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 00:12:49,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:12:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:12:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:12:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:12:49,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:12:49,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 00:12:49,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:12:49,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:12:49,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:12:49,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 00:12:49,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:12:49,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-27 00:12:49,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:12:49,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:12:49,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:12:49,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-27 00:12:49,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:12:50,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-27 00:12:50,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:12:50,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:12:50,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:12:50,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 00:12:50,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:12:50,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:12:50,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:12:50,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:12:50,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-27 00:12:50,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:12:50,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:12:50,119 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 226 proven. 74 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-27 00:12:50,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584332062] [2020-10-27 00:12:50,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:12:50,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:12:50,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874756279] [2020-10-27 00:12:50,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:12:50,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:12:50,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:12:50,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:12:50,121 INFO L87 Difference]: Start difference. First operand 7896 states and 10059 transitions. Second operand 7 states. [2020-10-27 00:12:51,068 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 68