/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-fpi/conda.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:51:07,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:51:07,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:51:07,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:51:07,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:51:07,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:51:07,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:51:07,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:51:07,712 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:51:07,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:51:07,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:51:07,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:51:07,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:51:07,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:51:07,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:51:07,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:51:07,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:51:07,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:51:07,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:51:07,748 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:51:07,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:51:07,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:51:07,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:51:07,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:51:07,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:51:07,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:51:07,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:51:07,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:51:07,773 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:51:07,774 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:51:07,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:51:07,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:51:07,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:51:07,777 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:51:07,778 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:51:07,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:51:07,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:51:07,779 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:51:07,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:51:07,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:51:07,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:51:07,782 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 03:51:07,808 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:51:07,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:51:07,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:51:07,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:51:07,810 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:51:07,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:51:07,811 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:51:07,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:51:07,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:51:07,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:51:07,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:51:07,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:51:07,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:51:07,812 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:51:07,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:51:07,813 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:51:07,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:51:07,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:51:07,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:51:07,813 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:51:07,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:51:07,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:51:07,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:51:07,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:51:07,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:51:07,815 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:51:07,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:51:07,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:51:07,815 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:51:07,815 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:51:08,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:51:08,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:51:08,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:51:08,240 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:51:08,241 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:51:08,242 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/conda.c [2020-10-29 03:51:08,319 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a14b4c05/031cfcb3b19e417d88eff5dfef7d4623/FLAG0b5a53581 [2020-10-29 03:51:09,065 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:51:09,067 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/conda.c [2020-10-29 03:51:09,076 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a14b4c05/031cfcb3b19e417d88eff5dfef7d4623/FLAG0b5a53581 [2020-10-29 03:51:09,384 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a14b4c05/031cfcb3b19e417d88eff5dfef7d4623 [2020-10-29 03:51:09,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:51:09,398 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:51:09,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:51:09,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:51:09,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:51:09,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:51:09" (1/1) ... [2020-10-29 03:51:09,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@179c13ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:51:09, skipping insertion in model container [2020-10-29 03:51:09,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:51:09" (1/1) ... [2020-10-29 03:51:09,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:51:09,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:51:09,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:51:09,660 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:51:09,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:51:09,706 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:51:09,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:51:09 WrapperNode [2020-10-29 03:51:09,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:51:09,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:51:09,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:51:09,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:51:09,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:51:09" (1/1) ... [2020-10-29 03:51:09,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:51:09" (1/1) ... [2020-10-29 03:51:09,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:51:09" (1/1) ... [2020-10-29 03:51:09,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:51:09" (1/1) ... [2020-10-29 03:51:09,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:51:09" (1/1) ... [2020-10-29 03:51:09,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:51:09" (1/1) ... [2020-10-29 03:51:09,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:51:09" (1/1) ... [2020-10-29 03:51:09,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:51:09,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:51:09,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:51:09,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:51:09,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:51:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:51:09,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:51:09,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:51:09,860 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:51:09,860 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 03:51:09,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:51:09,861 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:51:09,861 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:51:09,861 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:51:09,861 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:51:09,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:51:09,861 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 03:51:09,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:51:09,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:51:09,862 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 03:51:09,862 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:51:09,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 03:51:09,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:51:09,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:51:09,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:51:09,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:51:09,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:51:09,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:51:10,368 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:51:10,368 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 03:51:10,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:51:10 BoogieIcfgContainer [2020-10-29 03:51:10,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:51:10,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:51:10,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:51:10,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:51:10,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:51:09" (1/3) ... [2020-10-29 03:51:10,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6fcde0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:51:10, skipping insertion in model container [2020-10-29 03:51:10,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:51:09" (2/3) ... [2020-10-29 03:51:10,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6fcde0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:51:10, skipping insertion in model container [2020-10-29 03:51:10,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:51:10" (3/3) ... [2020-10-29 03:51:10,380 INFO L111 eAbstractionObserver]: Analyzing ICFG conda.c [2020-10-29 03:51:10,395 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:51:10,401 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:51:10,415 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:51:10,446 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:51:10,447 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:51:10,447 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:51:10,447 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:51:10,447 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:51:10,447 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:51:10,448 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:51:10,448 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:51:10,469 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-10-29 03:51:10,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-29 03:51:10,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:51:10,478 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] [2020-10-29 03:51:10,478 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:51:10,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:51:10,487 INFO L82 PathProgramCache]: Analyzing trace with hash 371341983, now seen corresponding path program 1 times [2020-10-29 03:51:10,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:51:10,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666051243] [2020-10-29 03:51:10,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:51:10,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:10,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:10,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:10,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:10,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:11,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:11,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 03:51:11,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:51:11,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 973 [2020-10-29 03:51:11,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:11,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:11,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:51:11,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:51:11,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:51:11,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:51:11,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:51:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:11,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:11,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:11,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:51:11,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:11,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:51:11,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:11,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:11,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:11,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:11,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:11,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:51:11,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:51:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:11,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:11,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:11,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:11,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:11,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:51:11,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:51:11,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:11,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:11,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:51:11,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:11,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:51:11,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:51:11,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:51:11,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666051243] [2020-10-29 03:51:11,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:51:11,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 03:51:11,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192913056] [2020-10-29 03:51:11,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:51:11,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:51:11,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:51:11,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:51:11,854 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 5 states. [2020-10-29 03:51:12,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:51:12,210 INFO L93 Difference]: Finished difference Result 76 states and 100 transitions. [2020-10-29 03:51:12,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:51:12,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-29 03:51:12,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:51:12,220 INFO L225 Difference]: With dead ends: 76 [2020-10-29 03:51:12,221 INFO L226 Difference]: Without dead ends: 36 [2020-10-29 03:51:12,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:51:12,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-29 03:51:12,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-10-29 03:51:12,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-29 03:51:12,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-10-29 03:51:12,271 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2020-10-29 03:51:12,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:51:12,272 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-10-29 03:51:12,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:51:12,272 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-10-29 03:51:12,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 03:51:12,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:51:12,274 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] [2020-10-29 03:51:12,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:51:12,275 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:51:12,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:51:12,275 INFO L82 PathProgramCache]: Analyzing trace with hash -2090381425, now seen corresponding path program 1 times [2020-10-29 03:51:12,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:51:12,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506046931] [2020-10-29 03:51:12,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:51:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:12,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:12,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:12,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:13,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:13,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:13,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:13,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:14,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:15,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:15,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 03:51:15,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:51:15,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3516 [2020-10-29 03:51:15,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:15,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:15,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:51:15,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:51:15,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 03:51:15,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:51:16,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:51:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:16,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:16,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:16,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:51:16,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:16,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:51:16,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:16,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:16,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:16,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:16,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:16,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:16,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:51:16,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:16,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:16,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:16,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:16,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:16,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:51:16,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:16,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:16,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:16,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:16,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:16,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:51:16,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:51:16,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506046931] [2020-10-29 03:51:16,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:51:16,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:51:16,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16973554] [2020-10-29 03:51:16,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:51:16,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:51:16,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:51:16,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:51:16,423 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 14 states. [2020-10-29 03:51:17,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:51:17,288 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2020-10-29 03:51:17,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:51:17,289 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2020-10-29 03:51:17,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:51:17,292 INFO L225 Difference]: With dead ends: 53 [2020-10-29 03:51:17,292 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 03:51:17,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:51:17,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 03:51:17,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2020-10-29 03:51:17,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 03:51:17,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-10-29 03:51:17,305 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 31 [2020-10-29 03:51:17,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:51:17,305 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-10-29 03:51:17,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:51:17,306 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-10-29 03:51:17,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 03:51:17,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:51:17,307 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] [2020-10-29 03:51:17,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:51:17,308 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:51:17,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:51:17,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1617779857, now seen corresponding path program 1 times [2020-10-29 03:51:17,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:51:17,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807496252] [2020-10-29 03:51:17,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:51:17,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:17,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:17,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:17,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:18,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:18,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:18,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 03:51:18,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:51:18,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1419 [2020-10-29 03:51:18,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:18,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:18,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:51:18,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:51:18,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 03:51:18,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:51:18,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:51:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:18,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:18,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:18,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:51:18,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:18,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:51:18,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:18,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:18,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:18,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:18,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:18,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:18,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:51:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:18,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:18,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:18,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:18,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:18,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:51:18,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:18,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:18,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:18,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:18,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:18,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:51:18,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:51:18,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807496252] [2020-10-29 03:51:18,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:51:18,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:51:18,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207201013] [2020-10-29 03:51:18,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:51:18,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:51:18,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:51:18,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:51:18,975 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 11 states. [2020-10-29 03:51:19,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:51:19,366 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2020-10-29 03:51:19,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:51:19,367 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-10-29 03:51:19,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:51:19,368 INFO L225 Difference]: With dead ends: 73 [2020-10-29 03:51:19,368 INFO L226 Difference]: Without dead ends: 62 [2020-10-29 03:51:19,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:51:19,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-29 03:51:19,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 48. [2020-10-29 03:51:19,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-29 03:51:19,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2020-10-29 03:51:19,380 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 31 [2020-10-29 03:51:19,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:51:19,380 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2020-10-29 03:51:19,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:51:19,381 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2020-10-29 03:51:19,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 03:51:19,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:51:19,382 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 03:51:19,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:51:19,382 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:51:19,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:51:19,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1912294515, now seen corresponding path program 2 times [2020-10-29 03:51:19,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:51:19,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895441990] [2020-10-29 03:51:19,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:51:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:19,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:19,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:20,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:20,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 03:51:20,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:51:20,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 726 [2020-10-29 03:51:20,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:20,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:20,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:51:20,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:51:20,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 03:51:20,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:20,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:51:20,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:20,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:20,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:20,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:51:20,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:20,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:51:20,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:20,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:20,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:20,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:20,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:20,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:20,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:51:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:20,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:20,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:20,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:20,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:20,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:51:20,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:20,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:20,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:20,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:20,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:20,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:51:20,258 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:51:20,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895441990] [2020-10-29 03:51:20,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:51:20,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:51:20,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834794467] [2020-10-29 03:51:20,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:51:20,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:51:20,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:51:20,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:51:20,262 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand 8 states. [2020-10-29 03:51:20,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:51:20,596 INFO L93 Difference]: Finished difference Result 96 states and 113 transitions. [2020-10-29 03:51:20,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:51:20,597 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-10-29 03:51:20,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:51:20,598 INFO L225 Difference]: With dead ends: 96 [2020-10-29 03:51:20,598 INFO L226 Difference]: Without dead ends: 65 [2020-10-29 03:51:20,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:51:20,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-29 03:51:20,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 49. [2020-10-29 03:51:20,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-29 03:51:20,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2020-10-29 03:51:20,609 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 33 [2020-10-29 03:51:20,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:51:20,610 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2020-10-29 03:51:20,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:51:20,610 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2020-10-29 03:51:20,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 03:51:20,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:51:20,611 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 03:51:20,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:51:20,612 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:51:20,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:51:20,612 INFO L82 PathProgramCache]: Analyzing trace with hash 2047640497, now seen corresponding path program 3 times [2020-10-29 03:51:20,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:51:20,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676137967] [2020-10-29 03:51:20,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:51:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:20,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:20,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:20,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:20,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:21,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:21,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:22,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:22,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 03:51:22,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:51:22,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1741 [2020-10-29 03:51:22,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:22,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:22,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:51:22,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:51:22,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 03:51:22,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:51:22,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:51:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:22,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:22,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:22,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:51:22,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:22,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:51:22,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:22,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:22,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:22,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:22,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:22,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:51:22,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:51:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:22,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:22,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:22,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:22,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:22,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:51:22,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:22,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:22,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:22,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:22,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:22,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:51:22,473 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:51:22,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676137967] [2020-10-29 03:51:22,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:51:22,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:51:22,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429501713] [2020-10-29 03:51:22,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:51:22,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:51:22,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:51:22,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:51:22,476 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 8 states. [2020-10-29 03:51:22,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:51:22,718 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2020-10-29 03:51:22,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:51:22,718 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-10-29 03:51:22,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:51:22,720 INFO L225 Difference]: With dead ends: 59 [2020-10-29 03:51:22,720 INFO L226 Difference]: Without dead ends: 48 [2020-10-29 03:51:22,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:51:22,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-29 03:51:22,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 39. [2020-10-29 03:51:22,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 03:51:22,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-29 03:51:22,728 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 33 [2020-10-29 03:51:22,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:51:22,728 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-29 03:51:22,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:51:22,728 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-29 03:51:22,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 03:51:22,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:51:22,730 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:51:22,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:51:22,730 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:51:22,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:51:22,730 INFO L82 PathProgramCache]: Analyzing trace with hash -283658706, now seen corresponding path program 4 times [2020-10-29 03:51:22,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:51:22,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353336298] [2020-10-29 03:51:22,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:51:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:22,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:22,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:23,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:23,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:24,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:24,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:24,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:25,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:25,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:26,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:26,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:27,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:27,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:27,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:27,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:51:27,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 03:51:27,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5113 [2020-10-29 03:51:27,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:27,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:27,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:51:27,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:51:27,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:51:27,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:28,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:51:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:28,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:28,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:28,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:51:28,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:28,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:51:28,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:28,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:28,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:28,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:28,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:28,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:28,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:51:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:28,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:28,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:28,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:28,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:28,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:51:28,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:28,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:28,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:28,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:28,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:28,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:28,854 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:51:28,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353336298] [2020-10-29 03:51:28,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:51:28,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:51:28,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539096157] [2020-10-29 03:51:28,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:51:28,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:51:28,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:51:28,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:51:28,857 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 20 states. [2020-10-29 03:51:30,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:51:30,243 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2020-10-29 03:51:30,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:51:30,248 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2020-10-29 03:51:30,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:51:30,249 INFO L225 Difference]: With dead ends: 59 [2020-10-29 03:51:30,250 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 03:51:30,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=99, Invalid=771, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:51:30,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 03:51:30,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2020-10-29 03:51:30,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 03:51:30,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-10-29 03:51:30,260 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 38 [2020-10-29 03:51:30,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:51:30,260 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-10-29 03:51:30,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:51:30,261 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-10-29 03:51:30,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 03:51:30,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:51:30,262 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:51:30,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:51:30,262 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:51:30,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:51:30,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1563522384, now seen corresponding path program 1 times [2020-10-29 03:51:30,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:51:30,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196608795] [2020-10-29 03:51:30,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:51:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:30,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:30,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:30,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:31,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:31,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:32,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:32,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:33,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:34,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:34,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:51:34,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:51:34,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3902 [2020-10-29 03:51:34,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:34,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:34,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:51:34,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:51:34,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:51:34,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:34,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:51:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:34,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:34,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:34,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:51:34,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:34,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:51:34,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:34,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:34,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:34,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:34,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:34,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:51:34,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:51:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:34,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:34,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:34,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:34,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:34,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:51:34,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:34,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:34,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:34,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:34,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:34,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:34,757 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:51:34,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196608795] [2020-10-29 03:51:34,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:51:34,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:51:34,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537441819] [2020-10-29 03:51:34,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:51:34,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:51:34,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:51:34,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:51:34,760 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 15 states. [2020-10-29 03:51:35,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:51:35,480 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2020-10-29 03:51:35,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:51:35,480 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 38 [2020-10-29 03:51:35,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:51:35,481 INFO L225 Difference]: With dead ends: 76 [2020-10-29 03:51:35,481 INFO L226 Difference]: Without dead ends: 69 [2020-10-29 03:51:35,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=209, Invalid=493, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:51:35,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-29 03:51:35,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 50. [2020-10-29 03:51:35,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-29 03:51:35,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-10-29 03:51:35,497 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 38 [2020-10-29 03:51:35,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:51:35,497 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-10-29 03:51:35,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:51:35,498 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-10-29 03:51:35,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 03:51:35,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:51:35,499 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:51:35,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:51:35,499 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:51:35,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:51:35,500 INFO L82 PathProgramCache]: Analyzing trace with hash 2017163884, now seen corresponding path program 2 times [2020-10-29 03:51:35,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:51:35,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516661456] [2020-10-29 03:51:35,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:51:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:35,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:35,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:35,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:35,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:36,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:36,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:38,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:38,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:51:38,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:51:38,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3232 [2020-10-29 03:51:38,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:38,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:38,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:51:38,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 03:51:38,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 03:51:38,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:39,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:51:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:39,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:39,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:39,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:51:39,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:39,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:51:39,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:39,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:39,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:39,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:39,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:39,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:39,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:51:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:39,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:39,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:39,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:39,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:39,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:51:39,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:39,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:39,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:39,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:39,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:39,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:39,072 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:51:39,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516661456] [2020-10-29 03:51:39,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:51:39,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:51:39,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345480306] [2020-10-29 03:51:39,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:51:39,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:51:39,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:51:39,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:51:39,074 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 14 states. [2020-10-29 03:51:39,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:51:39,944 INFO L93 Difference]: Finished difference Result 84 states and 96 transitions. [2020-10-29 03:51:39,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:51:39,944 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2020-10-29 03:51:39,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:51:39,946 INFO L225 Difference]: With dead ends: 84 [2020-10-29 03:51:39,946 INFO L226 Difference]: Without dead ends: 77 [2020-10-29 03:51:39,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:51:39,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-29 03:51:39,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 50. [2020-10-29 03:51:39,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-29 03:51:39,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-10-29 03:51:39,959 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 38 [2020-10-29 03:51:39,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:51:39,959 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-10-29 03:51:39,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:51:39,959 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-10-29 03:51:39,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 03:51:39,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:51:39,960 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-29 03:51:39,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:51:39,961 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:51:39,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:51:39,963 INFO L82 PathProgramCache]: Analyzing trace with hash -818549140, now seen corresponding path program 5 times [2020-10-29 03:51:39,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:51:39,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069653761] [2020-10-29 03:51:39,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:51:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:40,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:40,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:40,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:40,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:51:40,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:51:40,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 979 [2020-10-29 03:51:40,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:40,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:40,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:51:40,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 03:51:40,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:51:40,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:41,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:51:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:41,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:41,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:41,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:51:41,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:41,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:51:41,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:41,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:41,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:41,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:41,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:41,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:41,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:51:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:41,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:41,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:41,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:41,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:41,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:51:41,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:41,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:41,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:41,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:41,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:41,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:41,085 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:51:41,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069653761] [2020-10-29 03:51:41,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:51:41,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:51:41,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5468022] [2020-10-29 03:51:41,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:51:41,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:51:41,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:51:41,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:51:41,093 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 10 states. [2020-10-29 03:51:41,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:51:41,448 INFO L93 Difference]: Finished difference Result 114 states and 136 transitions. [2020-10-29 03:51:41,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:51:41,455 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-10-29 03:51:41,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:51:41,456 INFO L225 Difference]: With dead ends: 114 [2020-10-29 03:51:41,457 INFO L226 Difference]: Without dead ends: 73 [2020-10-29 03:51:41,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:51:41,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-29 03:51:41,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 55. [2020-10-29 03:51:41,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 03:51:41,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2020-10-29 03:51:41,468 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 40 [2020-10-29 03:51:41,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:51:41,469 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2020-10-29 03:51:41,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:51:41,469 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2020-10-29 03:51:41,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 03:51:41,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:51:41,470 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-10-29 03:51:41,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:51:41,470 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:51:41,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:51:41,471 INFO L82 PathProgramCache]: Analyzing trace with hash 451576945, now seen corresponding path program 6 times [2020-10-29 03:51:41,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:51:41,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413609587] [2020-10-29 03:51:41,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:51:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:41,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:41,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:41,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:41,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:41,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:41,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:41,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:42,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:42,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:42,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:42,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:42,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:43,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:43,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:43,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:43,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:45,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:45,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:46,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:46,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:46,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:46,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 03:51:46,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-29 03:51:46,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:51:46,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:46,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:46,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:51:46,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:51:46,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 03:51:46,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:46,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:51:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:46,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:46,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:46,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:51:46,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:46,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:51:46,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:46,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:46,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:46,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:46,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:46,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:46,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:51:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:46,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:46,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:46,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:46,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:46,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:51:46,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:46,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:46,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:46,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:46,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:46,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:46,616 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 03:51:46,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413609587] [2020-10-29 03:51:46,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:51:46,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:51:46,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280834927] [2020-10-29 03:51:46,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:51:46,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:51:46,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:51:46,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:51:46,618 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand 10 states. [2020-10-29 03:51:46,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:51:46,981 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2020-10-29 03:51:46,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:51:46,982 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2020-10-29 03:51:46,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:51:46,983 INFO L225 Difference]: With dead ends: 67 [2020-10-29 03:51:46,983 INFO L226 Difference]: Without dead ends: 60 [2020-10-29 03:51:46,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:51:46,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-29 03:51:46,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 46. [2020-10-29 03:51:46,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-29 03:51:46,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-10-29 03:51:46,995 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 43 [2020-10-29 03:51:46,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:51:46,996 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-10-29 03:51:46,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:51:46,996 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-10-29 03:51:46,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 03:51:46,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:51:46,997 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:51:46,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:51:46,998 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:51:46,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:51:46,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1368274927, now seen corresponding path program 7 times [2020-10-29 03:51:46,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:51:46,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784368985] [2020-10-29 03:51:46,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:51:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:47,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:47,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:47,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:47,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:48,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:48,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:48,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:49,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:49,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:50,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:50,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:50,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:51,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:51,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:51,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:52,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:52,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 03:51:52,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 03:51:52,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-29 03:51:52,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:52,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:52,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:51:52,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:51:52,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 03:51:52,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:52,866 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 47 [2020-10-29 03:51:53,070 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2020-10-29 03:51:53,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:51:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:53,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:53,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:53,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:51:53,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:53,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:51:53,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:53,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:53,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:53,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:53,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:53,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:51:53,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:51:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:53,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:53,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:51:53,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:51:53,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:51:53,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:51:53,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:51:53,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:51:53,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:51:53,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:51:53,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:51:53,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:51:54,009 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 03:51:54,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784368985] [2020-10-29 03:51:54,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:51:54,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:51:54,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729491579] [2020-10-29 03:51:54,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:51:54,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:51:54,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:51:54,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:51:54,013 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 24 states. [2020-10-29 03:51:54,964 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2020-10-29 03:51:55,139 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2020-10-29 03:51:55,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:51:55,799 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2020-10-29 03:51:55,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:51:55,799 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 45 [2020-10-29 03:51:55,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:51:55,801 INFO L225 Difference]: With dead ends: 72 [2020-10-29 03:51:55,801 INFO L226 Difference]: Without dead ends: 65 [2020-10-29 03:51:55,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=148, Invalid=1184, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:51:55,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-29 03:51:55,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 57. [2020-10-29 03:51:55,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 03:51:55,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2020-10-29 03:51:55,825 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 45 [2020-10-29 03:51:55,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:51:55,825 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2020-10-29 03:51:55,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:51:55,828 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2020-10-29 03:51:55,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 03:51:55,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:51:55,829 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:51:55,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:51:55,830 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:51:55,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:51:55,830 INFO L82 PathProgramCache]: Analyzing trace with hash -220072975, now seen corresponding path program 3 times [2020-10-29 03:51:55,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:51:55,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222755545] [2020-10-29 03:51:55,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:51:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:51:55,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:55,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:55,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:56,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:56,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:56,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:57,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:57,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:57,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:59,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:51:59,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:00,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:00,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:00,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 03:52:00,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 03:52:00,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:52:00,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:00,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:00,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:52:00,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:52:00,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 03:52:00,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:01,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:52:01,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:01,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:01,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:01,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:52:01,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:01,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:52:01,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:01,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:01,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:01,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:01,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:01,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:01,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:52:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:01,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:01,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:01,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:01,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:01,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:52:01,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:01,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:01,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:01,213 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 03:52:01,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222755545] [2020-10-29 03:52:01,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:52:01,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:52:01,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050649184] [2020-10-29 03:52:01,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:52:01,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:52:01,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:52:01,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:52:01,215 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand 16 states. [2020-10-29 03:52:02,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:52:02,164 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2020-10-29 03:52:02,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:52:02,165 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2020-10-29 03:52:02,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:52:02,166 INFO L225 Difference]: With dead ends: 80 [2020-10-29 03:52:02,166 INFO L226 Difference]: Without dead ends: 65 [2020-10-29 03:52:02,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:52:02,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-29 03:52:02,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 57. [2020-10-29 03:52:02,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 03:52:02,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2020-10-29 03:52:02,178 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 45 [2020-10-29 03:52:02,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:52:02,178 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2020-10-29 03:52:02,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:52:02,179 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2020-10-29 03:52:02,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 03:52:02,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:52:02,180 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:52:02,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:52:02,180 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:52:02,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:52:02,181 INFO L82 PathProgramCache]: Analyzing trace with hash 550626477, now seen corresponding path program 4 times [2020-10-29 03:52:02,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:52:02,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941526435] [2020-10-29 03:52:02,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:52:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:02,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:02,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:02,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:02,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:03,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:03,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:03,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:03,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:05,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:05,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:06,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:06,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:07,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:07,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:07,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 03:52:07,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 03:52:07,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:52:07,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:07,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:07,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:52:07,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:52:07,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 03:52:07,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:07,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:52:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:07,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:07,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:07,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:52:07,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:07,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:52:07,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:07,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:07,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:07,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:07,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:07,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:07,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:52:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:07,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:07,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:07,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:07,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:07,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:07,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:07,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:07,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:07,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:07,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:07,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:07,630 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 03:52:07,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941526435] [2020-10-29 03:52:07,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:52:07,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:52:07,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242291041] [2020-10-29 03:52:07,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:52:07,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:52:07,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:52:07,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:52:07,633 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand 16 states. [2020-10-29 03:52:08,060 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2020-10-29 03:52:08,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:52:08,517 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2020-10-29 03:52:08,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:52:08,517 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2020-10-29 03:52:08,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:52:08,518 INFO L225 Difference]: With dead ends: 81 [2020-10-29 03:52:08,518 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 03:52:08,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=161, Invalid=541, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:52:08,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 03:52:08,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2020-10-29 03:52:08,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 03:52:08,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2020-10-29 03:52:08,538 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 45 [2020-10-29 03:52:08,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:52:08,539 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2020-10-29 03:52:08,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:52:08,539 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2020-10-29 03:52:08,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 03:52:08,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:52:08,543 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:52:08,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:52:08,544 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:52:08,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:52:08,545 INFO L82 PathProgramCache]: Analyzing trace with hash -437163407, now seen corresponding path program 5 times [2020-10-29 03:52:08,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:52:08,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490306421] [2020-10-29 03:52:08,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:52:08,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:08,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:08,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:08,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:08,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:09,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:09,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:09,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:09,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:13,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:13,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 03:52:13,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:52:13,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4760 [2020-10-29 03:52:13,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:13,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:13,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:52:13,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 03:52:13,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:52:13,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:13,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:52:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:13,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:13,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:13,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:52:13,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:13,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:52:13,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:13,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:13,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:13,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:13,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:13,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:13,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:52:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:13,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:13,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:13,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:13,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:13,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:52:13,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:13,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:13,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:13,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:13,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:13,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:13,799 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 03:52:13,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490306421] [2020-10-29 03:52:13,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:52:13,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:52:13,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013160851] [2020-10-29 03:52:13,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:52:13,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:52:13,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:52:13,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:52:13,802 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand 17 states. [2020-10-29 03:52:14,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:52:14,912 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2020-10-29 03:52:14,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:52:14,913 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2020-10-29 03:52:14,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:52:14,914 INFO L225 Difference]: With dead ends: 90 [2020-10-29 03:52:14,914 INFO L226 Difference]: Without dead ends: 83 [2020-10-29 03:52:14,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=169, Invalid=761, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:52:14,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-29 03:52:14,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 65. [2020-10-29 03:52:14,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-29 03:52:14,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2020-10-29 03:52:14,926 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 45 [2020-10-29 03:52:14,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:52:14,927 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2020-10-29 03:52:14,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:52:14,927 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2020-10-29 03:52:14,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 03:52:14,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:52:14,928 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:52:14,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:52:14,928 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:52:14,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:52:14,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1846739949, now seen corresponding path program 8 times [2020-10-29 03:52:14,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:52:14,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630092447] [2020-10-29 03:52:14,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:52:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:14,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:14,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:16,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:16,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 03:52:16,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:52:16,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1399 [2020-10-29 03:52:16,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:16,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:16,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:52:16,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:52:16,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 03:52:16,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:16,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:52:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:16,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:16,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:16,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:52:16,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:16,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:52:16,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:16,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:16,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:16,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:16,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:16,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:16,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:52:16,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:16,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:16,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:16,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:16,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:16,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:52:16,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:16,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:16,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:16,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:16,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:16,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:16,483 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 03:52:16,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630092447] [2020-10-29 03:52:16,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:52:16,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:52:16,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089424098] [2020-10-29 03:52:16,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:52:16,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:52:16,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:52:16,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:52:16,485 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand 12 states. [2020-10-29 03:52:16,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:52:16,984 INFO L93 Difference]: Finished difference Result 190 states and 226 transitions. [2020-10-29 03:52:16,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:52:16,985 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-10-29 03:52:16,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:52:16,986 INFO L225 Difference]: With dead ends: 190 [2020-10-29 03:52:16,987 INFO L226 Difference]: Without dead ends: 115 [2020-10-29 03:52:16,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:52:16,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-29 03:52:17,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 71. [2020-10-29 03:52:17,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-29 03:52:17,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2020-10-29 03:52:17,001 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 47 [2020-10-29 03:52:17,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:52:17,001 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2020-10-29 03:52:17,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:52:17,002 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2020-10-29 03:52:17,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 03:52:17,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:52:17,003 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:52:17,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:52:17,003 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:52:17,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:52:17,003 INFO L82 PathProgramCache]: Analyzing trace with hash -2062803320, now seen corresponding path program 9 times [2020-10-29 03:52:17,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:52:17,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473428186] [2020-10-29 03:52:17,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:52:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:17,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:17,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:17,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:17,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:17,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:17,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:17,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:17,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:18,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:18,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:18,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:18,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:19,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:19,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:19,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:19,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:20,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:20,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:20,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:20,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:20,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:20,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:21,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:21,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:21,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:21,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:21,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:22,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:22,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:52:22,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-29 03:52:22,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:52:22,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:22,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:22,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:52:22,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:52:22,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:52:22,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:22,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:52:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:22,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:22,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:22,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:52:22,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:22,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:52:22,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:22,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:22,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:22,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:22,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:22,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:22,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:52:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:22,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:22,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:22,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:22,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:22,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:52:22,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:22,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:22,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:22,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:22,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:22,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:22,168 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-29 03:52:22,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473428186] [2020-10-29 03:52:22,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:52:22,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:52:22,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887063327] [2020-10-29 03:52:22,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:52:22,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:52:22,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:52:22,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:52:22,174 INFO L87 Difference]: Start difference. First operand 71 states and 83 transitions. Second operand 12 states. [2020-10-29 03:52:22,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:52:22,671 INFO L93 Difference]: Finished difference Result 99 states and 113 transitions. [2020-10-29 03:52:22,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:52:22,673 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2020-10-29 03:52:22,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:52:22,675 INFO L225 Difference]: With dead ends: 99 [2020-10-29 03:52:22,675 INFO L226 Difference]: Without dead ends: 92 [2020-10-29 03:52:22,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:52:22,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-29 03:52:22,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 56. [2020-10-29 03:52:22,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-29 03:52:22,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2020-10-29 03:52:22,689 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 50 [2020-10-29 03:52:22,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:52:22,690 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2020-10-29 03:52:22,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:52:22,690 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2020-10-29 03:52:22,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 03:52:22,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:52:22,691 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:52:22,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:52:22,691 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:52:22,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:52:22,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1179539386, now seen corresponding path program 10 times [2020-10-29 03:52:22,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:52:22,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729597725] [2020-10-29 03:52:22,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:52:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:22,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:23,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:23,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:24,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:24,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:25,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:25,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:26,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:26,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:27,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:27,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:27,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:27,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:52:27,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 03:52:27,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 03:52:27,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:27,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:27,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:52:27,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:52:27,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:52:27,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:30,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:52:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:30,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:30,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:30,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:52:30,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:30,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:52:30,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:30,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:30,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:30,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:30,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:30,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:30,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:52:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:30,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:30,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:30,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:30,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:30,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:52:30,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:30,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:30,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:30,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:30,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:30,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:30,412 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:52:30,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729597725] [2020-10-29 03:52:30,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:52:30,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:52:30,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867937426] [2020-10-29 03:52:30,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:52:30,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:52:30,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:52:30,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:52:30,414 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand 32 states. [2020-10-29 03:52:31,315 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2020-10-29 03:52:32,120 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 48 [2020-10-29 03:52:32,414 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2020-10-29 03:52:33,413 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2020-10-29 03:52:34,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:52:34,378 INFO L93 Difference]: Finished difference Result 98 states and 114 transitions. [2020-10-29 03:52:34,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 03:52:34,379 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 52 [2020-10-29 03:52:34,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:52:34,380 INFO L225 Difference]: With dead ends: 98 [2020-10-29 03:52:34,381 INFO L226 Difference]: Without dead ends: 91 [2020-10-29 03:52:34,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=165, Invalid=1815, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 03:52:34,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-29 03:52:34,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 75. [2020-10-29 03:52:34,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-29 03:52:34,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 88 transitions. [2020-10-29 03:52:34,394 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 88 transitions. Word has length 52 [2020-10-29 03:52:34,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:52:34,394 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 88 transitions. [2020-10-29 03:52:34,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:52:34,395 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 88 transitions. [2020-10-29 03:52:34,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 03:52:34,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:52:34,396 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:52:34,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:52:34,396 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:52:34,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:52:34,396 INFO L82 PathProgramCache]: Analyzing trace with hash -960684668, now seen corresponding path program 6 times [2020-10-29 03:52:34,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:52:34,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202794888] [2020-10-29 03:52:34,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:52:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:34,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:34,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:34,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:35,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:35,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:35,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:36,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:36,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:37,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:37,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:38,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:38,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:38,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:39,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:39,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:52:39,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 03:52:39,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:52:39,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:39,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:39,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:52:39,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:52:39,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:52:39,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:39,848 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-10-29 03:52:40,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:52:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:40,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:40,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:40,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:52:40,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:40,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:52:40,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:40,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:40,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:40,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:40,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:40,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:40,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:52:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:40,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:40,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:40,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:40,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:40,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:52:40,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:40,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:40,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:40,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:40,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:40,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:40,368 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 03:52:40,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202794888] [2020-10-29 03:52:40,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:52:40,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:52:40,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313725307] [2020-10-29 03:52:40,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:52:40,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:52:40,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:52:40,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:52:40,371 INFO L87 Difference]: Start difference. First operand 75 states and 88 transitions. Second operand 18 states. [2020-10-29 03:52:40,892 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 32 [2020-10-29 03:52:41,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:52:41,507 INFO L93 Difference]: Finished difference Result 109 states and 127 transitions. [2020-10-29 03:52:41,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:52:41,508 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 52 [2020-10-29 03:52:41,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:52:41,509 INFO L225 Difference]: With dead ends: 109 [2020-10-29 03:52:41,509 INFO L226 Difference]: Without dead ends: 92 [2020-10-29 03:52:41,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:52:41,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-29 03:52:41,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 78. [2020-10-29 03:52:41,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-29 03:52:41,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 92 transitions. [2020-10-29 03:52:41,527 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 92 transitions. Word has length 52 [2020-10-29 03:52:41,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:52:41,527 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 92 transitions. [2020-10-29 03:52:41,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:52:41,527 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 92 transitions. [2020-10-29 03:52:41,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 03:52:41,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:52:41,528 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:52:41,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:52:41,528 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:52:41,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:52:41,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1038990776, now seen corresponding path program 7 times [2020-10-29 03:52:41,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:52:41,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220826520] [2020-10-29 03:52:41,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:52:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:41,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:41,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:41,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:41,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:43,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:43,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:44,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:44,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:44,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:45,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:46,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:46,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:46,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:46,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:46,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:52:46,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 03:52:46,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:52:46,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:46,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:46,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:52:46,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:52:46,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 03:52:46,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:47,200 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-10-29 03:52:47,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:52:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:47,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:47,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:47,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:52:47,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:47,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:52:47,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:47,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:47,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:47,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:47,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:47,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:47,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:52:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:47,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:47,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:47,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:47,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:47,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:52:47,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:47,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:47,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:47,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:47,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:47,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:47,502 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 17 proven. 29 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 03:52:47,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220826520] [2020-10-29 03:52:47,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:52:47,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:52:47,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005274404] [2020-10-29 03:52:47,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:52:47,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:52:47,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:52:47,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:52:47,504 INFO L87 Difference]: Start difference. First operand 78 states and 92 transitions. Second operand 19 states. [2020-10-29 03:52:48,458 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-29 03:52:48,759 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-29 03:52:49,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:52:49,532 INFO L93 Difference]: Finished difference Result 112 states and 129 transitions. [2020-10-29 03:52:49,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:52:49,533 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 52 [2020-10-29 03:52:49,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:52:49,534 INFO L225 Difference]: With dead ends: 112 [2020-10-29 03:52:49,535 INFO L226 Difference]: Without dead ends: 105 [2020-10-29 03:52:49,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=212, Invalid=1194, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:52:49,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-29 03:52:49,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 86. [2020-10-29 03:52:49,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-29 03:52:49,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 103 transitions. [2020-10-29 03:52:49,556 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 103 transitions. Word has length 52 [2020-10-29 03:52:49,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:52:49,556 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 103 transitions. [2020-10-29 03:52:49,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:52:49,556 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 103 transitions. [2020-10-29 03:52:49,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 03:52:49,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:52:49,557 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:52:49,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:52:49,557 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:52:49,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:52:49,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1689012476, now seen corresponding path program 8 times [2020-10-29 03:52:49,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:52:49,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138623463] [2020-10-29 03:52:49,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:52:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:49,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:49,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:49,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:50,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:50,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:50,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:50,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:51,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:53,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:54,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:54,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:52:54,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:52:54,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:52:54,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:54,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:54,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:52:54,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 03:52:54,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 03:52:54,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:54,878 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 34 [2020-10-29 03:52:55,074 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 38 [2020-10-29 03:52:55,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:52:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:55,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:55,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:55,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:52:55,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:55,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:52:55,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:55,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:55,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:55,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:55,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:55,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:55,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:52:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:55,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:55,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:55,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:55,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:55,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:52:55,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:55,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:55,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:55,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:55,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:55,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:55,375 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 18 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 03:52:55,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138623463] [2020-10-29 03:52:55,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:52:55,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:52:55,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472017736] [2020-10-29 03:52:55,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:52:55,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:52:55,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:52:55,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:52:55,377 INFO L87 Difference]: Start difference. First operand 86 states and 103 transitions. Second operand 20 states. [2020-10-29 03:52:56,012 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2020-10-29 03:52:56,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:52:56,832 INFO L93 Difference]: Finished difference Result 141 states and 165 transitions. [2020-10-29 03:52:56,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:52:56,833 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 52 [2020-10-29 03:52:56,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:52:56,835 INFO L225 Difference]: With dead ends: 141 [2020-10-29 03:52:56,835 INFO L226 Difference]: Without dead ends: 134 [2020-10-29 03:52:56,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=216, Invalid=1044, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:52:56,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-29 03:52:56,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 89. [2020-10-29 03:52:56,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-29 03:52:56,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 107 transitions. [2020-10-29 03:52:56,852 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 107 transitions. Word has length 52 [2020-10-29 03:52:56,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:52:56,853 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 107 transitions. [2020-10-29 03:52:56,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:52:56,853 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 107 transitions. [2020-10-29 03:52:56,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 03:52:56,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:52:56,853 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:52:56,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:52:56,854 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:52:56,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:52:56,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1528543876, now seen corresponding path program 11 times [2020-10-29 03:52:56,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:52:56,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106167067] [2020-10-29 03:52:56,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:52:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:56,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:56,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:59,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:59,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:52:59,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:52:59,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2757 [2020-10-29 03:52:59,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:59,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:59,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:52:59,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:52:59,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:52:59,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:59,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:52:59,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:59,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:59,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:59,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:52:59,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:59,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:52:59,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:59,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:59,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:59,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:59,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:59,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:59,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:52:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:52:59,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:52:59,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:52:59,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:52:59,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:52:59,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:52:59,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:52:59,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:52:59,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:52:59,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:52:59,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:52:59,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:52:59,810 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-29 03:52:59,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106167067] [2020-10-29 03:52:59,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:52:59,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:52:59,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950709194] [2020-10-29 03:52:59,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:52:59,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:52:59,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:52:59,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:52:59,812 INFO L87 Difference]: Start difference. First operand 89 states and 107 transitions. Second operand 14 states. [2020-10-29 03:53:00,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:00,388 INFO L93 Difference]: Finished difference Result 198 states and 235 transitions. [2020-10-29 03:53:00,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:53:00,389 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-10-29 03:53:00,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:00,390 INFO L225 Difference]: With dead ends: 198 [2020-10-29 03:53:00,390 INFO L226 Difference]: Without dead ends: 125 [2020-10-29 03:53:00,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:53:00,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-29 03:53:00,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 91. [2020-10-29 03:53:00,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-29 03:53:00,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 106 transitions. [2020-10-29 03:53:00,415 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 106 transitions. Word has length 54 [2020-10-29 03:53:00,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:00,415 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 106 transitions. [2020-10-29 03:53:00,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:53:00,415 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 106 transitions. [2020-10-29 03:53:00,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 03:53:00,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:00,416 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:53:00,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:53:00,417 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:00,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:00,417 INFO L82 PathProgramCache]: Analyzing trace with hash -740835996, now seen corresponding path program 12 times [2020-10-29 03:53:00,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:00,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871469039] [2020-10-29 03:53:00,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:00,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:00,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:01,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:01,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:01,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:02,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:02,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:03,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:03,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:04,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:04,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:05,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:05,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:05,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:05,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:53:05,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 03:53:05,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-29 03:53:05,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:05,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:05,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:53:05,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:53:05,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:53:05,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:05,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:05,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:05,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:05,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:05,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:05,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:53:05,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:05,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:05,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:05,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:05,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:05,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:05,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:05,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:05,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:05,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:05,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:05,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:53:05,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:05,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:05,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:05,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:05,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:05,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:05,685 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-29 03:53:05,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871469039] [2020-10-29 03:53:05,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:53:05,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:53:05,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715035219] [2020-10-29 03:53:05,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:53:05,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:05,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:53:05,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:53:05,688 INFO L87 Difference]: Start difference. First operand 91 states and 106 transitions. Second operand 14 states. [2020-10-29 03:53:06,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:06,408 INFO L93 Difference]: Finished difference Result 114 states and 130 transitions. [2020-10-29 03:53:06,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:53:06,412 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-10-29 03:53:06,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:06,413 INFO L225 Difference]: With dead ends: 114 [2020-10-29 03:53:06,413 INFO L226 Difference]: Without dead ends: 97 [2020-10-29 03:53:06,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:53:06,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-29 03:53:06,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 66. [2020-10-29 03:53:06,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-29 03:53:06,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 75 transitions. [2020-10-29 03:53:06,430 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 75 transitions. Word has length 54 [2020-10-29 03:53:06,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:06,430 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 75 transitions. [2020-10-29 03:53:06,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:53:06,430 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 75 transitions. [2020-10-29 03:53:06,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 03:53:06,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:06,431 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:53:06,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:53:06,431 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:06,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:06,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1364016719, now seen corresponding path program 13 times [2020-10-29 03:53:06,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:06,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181715698] [2020-10-29 03:53:06,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:06,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:06,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:06,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:07,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:07,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:08,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:09,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:11,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:11,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 03:53:11,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:53:11,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:53:11,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:11,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:11,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-29 03:53:11,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:53:11,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 03:53:11,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:12,304 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 36 [2020-10-29 03:53:12,680 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 43 [2020-10-29 03:53:12,924 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 43 [2020-10-29 03:53:13,118 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2020-10-29 03:53:13,278 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 40 [2020-10-29 03:53:13,462 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-29 03:53:14,062 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2020-10-29 03:53:16,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:16,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:16,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:16,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:16,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:16,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:53:16,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:16,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:16,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:16,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:16,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:16,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:16,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:16,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:16,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:16,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:16,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:16,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:53:16,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:16,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:16,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:16,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:16,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:16,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:16,317 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:53:16,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181715698] [2020-10-29 03:53:16,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:53:16,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-29 03:53:16,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117284311] [2020-10-29 03:53:16,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-29 03:53:16,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:16,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-29 03:53:16,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1315, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:53:16,319 INFO L87 Difference]: Start difference. First operand 66 states and 75 transitions. Second operand 38 states. [2020-10-29 03:53:19,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:19,830 INFO L93 Difference]: Finished difference Result 104 states and 119 transitions. [2020-10-29 03:53:19,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-29 03:53:19,830 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 59 [2020-10-29 03:53:19,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:19,832 INFO L225 Difference]: With dead ends: 104 [2020-10-29 03:53:19,832 INFO L226 Difference]: Without dead ends: 97 [2020-10-29 03:53:19,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=124, Invalid=1856, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 03:53:19,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-29 03:53:19,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 83. [2020-10-29 03:53:19,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-29 03:53:19,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 97 transitions. [2020-10-29 03:53:19,855 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 97 transitions. Word has length 59 [2020-10-29 03:53:19,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:19,855 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 97 transitions. [2020-10-29 03:53:19,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-29 03:53:19,855 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 97 transitions. [2020-10-29 03:53:19,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 03:53:19,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:19,856 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:53:19,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:53:19,857 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:19,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:19,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1230003213, now seen corresponding path program 9 times [2020-10-29 03:53:19,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:19,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594182043] [2020-10-29 03:53:19,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:19,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:19,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:20,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:20,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:20,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:20,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:22,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:22,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:23,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:23,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:23,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:23,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:23,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:23,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:24,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:24,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:24,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 03:53:24,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 03:53:24,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:53:24,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:24,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:24,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:53:24,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 03:53:24,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:53:24,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:25,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:25,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:25,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:25,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:25,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:25,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:53:25,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:25,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:25,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:25,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:25,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:25,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:25,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:25,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:25,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:25,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:25,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:25,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:53:25,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:25,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:25,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:25,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:25,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:25,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:25,918 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 39 proven. 35 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 03:53:25,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594182043] [2020-10-29 03:53:25,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:53:25,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:53:25,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824792425] [2020-10-29 03:53:25,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:53:25,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:25,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:53:25,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:53:25,921 INFO L87 Difference]: Start difference. First operand 83 states and 97 transitions. Second operand 22 states. [2020-10-29 03:53:26,828 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-10-29 03:53:27,464 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-10-29 03:53:27,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:27,945 INFO L93 Difference]: Finished difference Result 119 states and 136 transitions. [2020-10-29 03:53:27,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:53:27,946 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 59 [2020-10-29 03:53:27,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:27,947 INFO L225 Difference]: With dead ends: 119 [2020-10-29 03:53:27,948 INFO L226 Difference]: Without dead ends: 100 [2020-10-29 03:53:27,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=391, Invalid=1501, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 03:53:27,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-29 03:53:27,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 77. [2020-10-29 03:53:27,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-29 03:53:27,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 89 transitions. [2020-10-29 03:53:27,970 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 89 transitions. Word has length 59 [2020-10-29 03:53:27,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:27,970 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 89 transitions. [2020-10-29 03:53:27,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:53:27,970 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 89 transitions. [2020-10-29 03:53:27,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 03:53:27,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:27,971 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:53:27,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:53:27,971 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:27,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:27,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1007722543, now seen corresponding path program 10 times [2020-10-29 03:53:27,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:27,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647911863] [2020-10-29 03:53:27,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:28,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:28,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:28,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:29,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:29,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:32,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:32,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:32,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 03:53:32,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:53:32,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:53:32,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:32,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:32,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:53:32,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:53:32,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 03:53:32,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:33,808 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-10-29 03:53:34,113 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 34 [2020-10-29 03:53:34,312 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2020-10-29 03:53:34,454 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 32 [2020-10-29 03:53:34,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:34,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:34,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:34,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:34,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:34,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:53:34,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:34,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:34,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:34,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:34,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:34,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:34,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:34,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:34,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:34,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:34,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:34,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:53:34,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:34,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:34,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:34,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:34,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:34,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:34,777 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-29 03:53:34,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647911863] [2020-10-29 03:53:34,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:53:34,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:53:34,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145098310] [2020-10-29 03:53:34,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:53:34,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:34,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:53:34,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:53:34,780 INFO L87 Difference]: Start difference. First operand 77 states and 89 transitions. Second operand 21 states. [2020-10-29 03:53:35,448 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2020-10-29 03:53:36,581 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-10-29 03:53:36,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:36,821 INFO L93 Difference]: Finished difference Result 145 states and 172 transitions. [2020-10-29 03:53:36,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:53:36,822 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 59 [2020-10-29 03:53:36,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:36,823 INFO L225 Difference]: With dead ends: 145 [2020-10-29 03:53:36,824 INFO L226 Difference]: Without dead ends: 118 [2020-10-29 03:53:36,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=178, Invalid=944, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:53:36,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-29 03:53:36,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 100. [2020-10-29 03:53:36,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-29 03:53:36,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 118 transitions. [2020-10-29 03:53:36,847 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 118 transitions. Word has length 59 [2020-10-29 03:53:36,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:36,847 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 118 transitions. [2020-10-29 03:53:36,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:53:36,847 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 118 transitions. [2020-10-29 03:53:36,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 03:53:36,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:36,848 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:53:36,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:53:36,848 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:36,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:36,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1386648973, now seen corresponding path program 11 times [2020-10-29 03:53:36,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:36,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687849575] [2020-10-29 03:53:36,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:36,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:36,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:36,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:37,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:37,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:37,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:37,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:38,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:38,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:38,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:39,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:40,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:41,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:41,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 03:53:41,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 03:53:41,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:53:41,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:41,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:41,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:53:41,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:53:41,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 03:53:41,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:42,299 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2020-10-29 03:53:42,582 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 42 [2020-10-29 03:53:43,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:43,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:43,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:43,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:43,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:43,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:53:43,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:43,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:43,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:43,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:43,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:43,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:43,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:43,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:43,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:43,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:43,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:43,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:53:43,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:43,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:43,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:43,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:43,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:43,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:43,042 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 16 proven. 44 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-29 03:53:43,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687849575] [2020-10-29 03:53:43,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:53:43,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:53:43,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462556331] [2020-10-29 03:53:43,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:53:43,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:43,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:53:43,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:53:43,044 INFO L87 Difference]: Start difference. First operand 100 states and 118 transitions. Second operand 21 states. [2020-10-29 03:53:43,789 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-10-29 03:53:44,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:44,490 INFO L93 Difference]: Finished difference Result 159 states and 188 transitions. [2020-10-29 03:53:44,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:53:44,491 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 59 [2020-10-29 03:53:44,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:44,493 INFO L225 Difference]: With dead ends: 159 [2020-10-29 03:53:44,493 INFO L226 Difference]: Without dead ends: 140 [2020-10-29 03:53:44,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=246, Invalid=944, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:53:44,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-29 03:53:44,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 106. [2020-10-29 03:53:44,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-29 03:53:44,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 125 transitions. [2020-10-29 03:53:44,518 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 125 transitions. Word has length 59 [2020-10-29 03:53:44,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:44,518 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 125 transitions. [2020-10-29 03:53:44,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:53:44,518 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 125 transitions. [2020-10-29 03:53:44,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 03:53:44,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:44,519 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:53:44,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:53:44,520 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:44,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:44,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1291630161, now seen corresponding path program 12 times [2020-10-29 03:53:44,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:44,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430390128] [2020-10-29 03:53:44,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:44,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:44,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:44,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:45,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:45,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:47,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:47,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:47,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:47,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:49,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:49,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 03:53:49,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:53:49,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:53:49,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:49,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:49,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:53:49,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 03:53:49,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:53:49,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:50,158 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 43 [2020-10-29 03:53:50,435 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 44 [2020-10-29 03:53:50,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:50,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:50,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:50,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:50,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:50,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:53:50,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:50,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:50,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:50,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:50,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:50,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:50,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:50,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:50,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:50,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:50,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:50,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:53:50,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:50,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:50,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:50,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:50,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:50,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:50,842 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 27 proven. 32 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-29 03:53:50,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430390128] [2020-10-29 03:53:50,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:53:50,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:53:50,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900591333] [2020-10-29 03:53:50,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:53:50,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:50,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:53:50,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:53:50,844 INFO L87 Difference]: Start difference. First operand 106 states and 125 transitions. Second operand 23 states. [2020-10-29 03:53:51,704 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2020-10-29 03:53:52,248 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-10-29 03:53:52,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:52,849 INFO L93 Difference]: Finished difference Result 155 states and 180 transitions. [2020-10-29 03:53:52,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:53:52,850 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 59 [2020-10-29 03:53:52,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:52,852 INFO L225 Difference]: With dead ends: 155 [2020-10-29 03:53:52,852 INFO L226 Difference]: Without dead ends: 148 [2020-10-29 03:53:52,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=272, Invalid=1368, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:53:52,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-29 03:53:52,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 126. [2020-10-29 03:53:52,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-29 03:53:52,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 151 transitions. [2020-10-29 03:53:52,888 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 151 transitions. Word has length 59 [2020-10-29 03:53:52,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:52,888 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 151 transitions. [2020-10-29 03:53:52,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:53:52,888 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 151 transitions. [2020-10-29 03:53:52,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 03:53:52,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:52,889 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:53:52,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:53:52,889 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:52,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:52,890 INFO L82 PathProgramCache]: Analyzing trace with hash 2049569357, now seen corresponding path program 14 times [2020-10-29 03:53:52,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:52,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101516550] [2020-10-29 03:53:52,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:52,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:52,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:52,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:57,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:57,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 03:53:57,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:53:57,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4669 [2020-10-29 03:53:57,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:57,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:57,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:53:57,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:53:57,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 03:53:57,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:57,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:57,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:57,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:57,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:57,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:57,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:53:57,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:57,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:57,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:57,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:57,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:57,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:57,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:57,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:57,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:57,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:57,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:57,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:53:57,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:57,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:57,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:57,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:57,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:57,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:57,815 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-29 03:53:57,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101516550] [2020-10-29 03:53:57,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:53:57,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:53:57,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014713237] [2020-10-29 03:53:57,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:53:57,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:57,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:53:57,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:53:57,818 INFO L87 Difference]: Start difference. First operand 126 states and 151 transitions. Second operand 16 states. [2020-10-29 03:53:58,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:58,547 INFO L93 Difference]: Finished difference Result 330 states and 398 transitions. [2020-10-29 03:53:58,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:53:58,548 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 61 [2020-10-29 03:53:58,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:58,549 INFO L225 Difference]: With dead ends: 330 [2020-10-29 03:53:58,550 INFO L226 Difference]: Without dead ends: 217 [2020-10-29 03:53:58,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:53:58,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-29 03:53:58,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 111. [2020-10-29 03:53:58,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-29 03:53:58,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 130 transitions. [2020-10-29 03:53:58,578 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 130 transitions. Word has length 61 [2020-10-29 03:53:58,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:58,578 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 130 transitions. [2020-10-29 03:53:58,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:53:58,578 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 130 transitions. [2020-10-29 03:53:58,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 03:53:58,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:58,579 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:53:58,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:53:58,580 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:58,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:58,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1206194957, now seen corresponding path program 13 times [2020-10-29 03:53:58,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:58,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95049354] [2020-10-29 03:53:58,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:58,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:58,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:58,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:58,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:59,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:00,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:03,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:03,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:03,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:03,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 03:54:03,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:54:03,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:54:03,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:03,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:03,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:54:03,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:54:03,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 03:54:03,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:03,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:03,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:03,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:03,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:03,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:03,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:54:03,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:03,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:03,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:03,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:03,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:03,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:03,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:03,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:03,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:03,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:03,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:03,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:54:03,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:03,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:03,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:03,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:03,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:03,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:03,837 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 16 proven. 55 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-29 03:54:03,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95049354] [2020-10-29 03:54:03,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:03,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:54:03,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586995959] [2020-10-29 03:54:03,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:54:03,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:03,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:54:03,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:54:03,840 INFO L87 Difference]: Start difference. First operand 111 states and 130 transitions. Second operand 16 states. [2020-10-29 03:54:04,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:04,766 INFO L93 Difference]: Finished difference Result 181 states and 212 transitions. [2020-10-29 03:54:04,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:54:04,767 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 61 [2020-10-29 03:54:04,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:04,769 INFO L225 Difference]: With dead ends: 181 [2020-10-29 03:54:04,769 INFO L226 Difference]: Without dead ends: 162 [2020-10-29 03:54:04,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=169, Invalid=643, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:54:04,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-29 03:54:04,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 70. [2020-10-29 03:54:04,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-29 03:54:04,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 79 transitions. [2020-10-29 03:54:04,792 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 79 transitions. Word has length 61 [2020-10-29 03:54:04,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:04,792 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 79 transitions. [2020-10-29 03:54:04,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:54:04,792 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions. [2020-10-29 03:54:04,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 03:54:04,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:04,793 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:04,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:54:04,793 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:04,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:04,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1874321502, now seen corresponding path program 15 times [2020-10-29 03:54:04,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:04,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662326586] [2020-10-29 03:54:04,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:04,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:06,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:07,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:09,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:09,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 03:54:09,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:54:09,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-29 03:54:09,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:09,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:09,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-29 03:54:09,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:54:09,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:54:09,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:10,564 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2020-10-29 03:54:10,693 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2020-10-29 03:54:10,889 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2020-10-29 03:54:11,126 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2020-10-29 03:54:11,285 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-10-29 03:54:11,551 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 56 [2020-10-29 03:54:11,922 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 60 [2020-10-29 03:54:12,128 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2020-10-29 03:54:12,432 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 62 [2020-10-29 03:54:12,792 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 66 [2020-10-29 03:54:13,069 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 53 [2020-10-29 03:54:13,410 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 64 [2020-10-29 03:54:13,778 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 72 [2020-10-29 03:54:14,090 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 63 [2020-10-29 03:54:14,300 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2020-10-29 03:54:14,498 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2020-10-29 03:54:14,684 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2020-10-29 03:54:14,882 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2020-10-29 03:54:15,118 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-10-29 03:54:15,305 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-10-29 03:54:15,485 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2020-10-29 03:54:15,721 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2020-10-29 03:54:16,056 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2020-10-29 03:54:17,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:17,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:17,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:17,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:17,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:17,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:17,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:17,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:17,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:17,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:17,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:17,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:17,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:17,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:17,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:17,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:17,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:17,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:17,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:17,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:54:17,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:17,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:17,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:17,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:17,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:17,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:17,494 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 25 proven. 78 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-29 03:54:17,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662326586] [2020-10-29 03:54:17,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:17,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-29 03:54:17,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75351553] [2020-10-29 03:54:17,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-29 03:54:17,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:17,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-29 03:54:17,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1400, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:54:17,497 INFO L87 Difference]: Start difference. First operand 70 states and 79 transitions. Second operand 41 states. [2020-10-29 03:54:18,109 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 60 [2020-10-29 03:54:18,665 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2020-10-29 03:54:18,911 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2020-10-29 03:54:19,112 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-29 03:54:19,440 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 27 [2020-10-29 03:54:20,508 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 78 [2020-10-29 03:54:20,792 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2020-10-29 03:54:21,383 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 87 [2020-10-29 03:54:21,758 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2020-10-29 03:54:21,991 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2020-10-29 03:54:22,430 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 65 [2020-10-29 03:54:22,708 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2020-10-29 03:54:23,127 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 70 [2020-10-29 03:54:23,416 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2020-10-29 03:54:23,708 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2020-10-29 03:54:24,121 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-10-29 03:54:24,520 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2020-10-29 03:54:25,250 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2020-10-29 03:54:25,694 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2020-10-29 03:54:26,476 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 113 [2020-10-29 03:54:26,727 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-29 03:54:27,280 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 90 [2020-10-29 03:54:27,496 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-29 03:54:27,786 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 77 [2020-10-29 03:54:28,110 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 75 [2020-10-29 03:54:28,357 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2020-10-29 03:54:28,554 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-10-29 03:54:28,823 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2020-10-29 03:54:29,004 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-10-29 03:54:29,326 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 56 [2020-10-29 03:54:29,520 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-10-29 03:54:29,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:29,825 INFO L93 Difference]: Finished difference Result 138 states and 160 transitions. [2020-10-29 03:54:29,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-29 03:54:29,826 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 66 [2020-10-29 03:54:29,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:29,827 INFO L225 Difference]: With dead ends: 138 [2020-10-29 03:54:29,827 INFO L226 Difference]: Without dead ends: 116 [2020-10-29 03:54:29,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2044 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=1040, Invalid=5766, Unknown=0, NotChecked=0, Total=6806 [2020-10-29 03:54:29,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-29 03:54:29,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 79. [2020-10-29 03:54:29,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-29 03:54:29,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2020-10-29 03:54:29,852 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 66 [2020-10-29 03:54:29,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:29,853 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2020-10-29 03:54:29,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-29 03:54:29,853 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2020-10-29 03:54:29,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 03:54:29,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:29,853 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:29,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:54:29,854 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:29,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:29,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1034442400, now seen corresponding path program 14 times [2020-10-29 03:54:29,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:29,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012331126] [2020-10-29 03:54:29,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:29,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:29,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:30,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:30,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:30,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:30,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:33,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:33,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:34,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:34,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:34,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 03:54:34,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:54:34,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-29 03:54:34,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:34,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:34,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:54:34,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:54:34,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:54:34,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:35,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:35,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:35,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:35,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:35,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:35,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:54:35,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:35,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:35,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:35,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:35,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:35,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:35,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:35,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:35,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:35,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:35,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:35,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:35,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:35,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:35,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:35,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:35,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:35,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:35,322 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 29 proven. 45 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-29 03:54:35,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012331126] [2020-10-29 03:54:35,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:35,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:54:35,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327418998] [2020-10-29 03:54:35,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:54:35,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:35,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:54:35,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:54:35,325 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand 13 states. [2020-10-29 03:54:36,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:36,254 INFO L93 Difference]: Finished difference Result 121 states and 140 transitions. [2020-10-29 03:54:36,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:54:36,255 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2020-10-29 03:54:36,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:36,255 INFO L225 Difference]: With dead ends: 121 [2020-10-29 03:54:36,255 INFO L226 Difference]: Without dead ends: 86 [2020-10-29 03:54:36,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:54:36,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-29 03:54:36,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2020-10-29 03:54:36,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-29 03:54:36,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2020-10-29 03:54:36,276 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 66 [2020-10-29 03:54:36,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:36,276 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2020-10-29 03:54:36,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:54:36,276 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2020-10-29 03:54:36,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 03:54:36,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:36,277 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:36,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:54:36,277 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:36,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:36,277 INFO L82 PathProgramCache]: Analyzing trace with hash -2145886180, now seen corresponding path program 15 times [2020-10-29 03:54:36,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:36,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955773821] [2020-10-29 03:54:36,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:36,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:36,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:36,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:36,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:36,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:37,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:38,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:38,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:38,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:39,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:39,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:39,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:41,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:41,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 03:54:41,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 03:54:41,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:54:41,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:41,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:41,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:54:41,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:54:41,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:54:41,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:42,242 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2020-10-29 03:54:42,872 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 52 [2020-10-29 03:54:43,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:43,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:43,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:43,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:43,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:43,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:43,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:43,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:43,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:43,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:43,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:43,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:43,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:43,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:43,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:43,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:43,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:43,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:54:43,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:43,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:43,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:43,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:43,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:43,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:43,692 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 25 proven. 62 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-29 03:54:43,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955773821] [2020-10-29 03:54:43,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:43,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:54:43,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513436938] [2020-10-29 03:54:43,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:54:43,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:43,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:54:43,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:54:43,694 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. Second operand 25 states. [2020-10-29 03:54:44,525 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 32 [2020-10-29 03:54:44,698 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2020-10-29 03:54:45,013 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 68 [2020-10-29 03:54:45,406 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 44 [2020-10-29 03:54:47,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:47,058 INFO L93 Difference]: Finished difference Result 138 states and 157 transitions. [2020-10-29 03:54:47,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 03:54:47,059 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 66 [2020-10-29 03:54:47,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:47,061 INFO L225 Difference]: With dead ends: 138 [2020-10-29 03:54:47,061 INFO L226 Difference]: Without dead ends: 117 [2020-10-29 03:54:47,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=547, Invalid=2105, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 03:54:47,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-29 03:54:47,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 91. [2020-10-29 03:54:47,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-29 03:54:47,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 104 transitions. [2020-10-29 03:54:47,090 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 104 transitions. Word has length 66 [2020-10-29 03:54:47,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:47,091 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 104 transitions. [2020-10-29 03:54:47,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:54:47,091 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 104 transitions. [2020-10-29 03:54:47,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 03:54:47,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:47,091 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:47,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 03:54:47,091 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:47,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:47,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1030316000, now seen corresponding path program 16 times [2020-10-29 03:54:47,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:47,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439226963] [2020-10-29 03:54:47,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:47,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:47,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:47,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:50,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:52,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:52,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 03:54:52,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:54:52,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:54:52,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:52,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:52,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:54:52,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:54:52,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 03:54:52,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:53,719 WARN L193 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 60