/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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 18:49:00,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 18:49:00,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 18:49:00,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 18:49:00,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 18:49:00,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 18:49:00,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 18:49:00,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 18:49:00,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 18:49:00,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 18:49:00,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 18:49:00,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 18:49:00,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 18:49:00,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 18:49:00,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 18:49:00,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 18:49:00,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 18:49:00,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 18:49:00,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 18:49:00,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 18:49:00,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 18:49:00,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 18:49:00,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 18:49:00,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 18:49:00,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 18:49:00,597 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 18:49:00,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 18:49:00,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 18:49:00,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 18:49:00,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 18:49:00,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 18:49:00,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 18:49:00,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 18:49:00,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 18:49:00,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 18:49:00,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 18:49:00,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 18:49:00,610 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 18:49:00,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 18:49:00,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 18:49:00,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 18:49:00,613 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 18:49:00,638 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 18:49:00,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 18:49:00,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 18:49:00,640 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 18:49:00,640 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 18:49:00,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 18:49:00,641 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 18:49:00,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 18:49:00,641 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 18:49:00,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 18:49:00,642 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 18:49:00,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 18:49:00,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 18:49:00,642 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 18:49:00,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 18:49:00,642 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 18:49:00,643 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 18:49:00,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 18:49:00,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 18:49:00,643 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 18:49:00,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 18:49:00,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:49:00,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 18:49:00,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 18:49:00,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 18:49:00,645 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 18:49:00,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 18:49:00,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 18:49:00,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 18:49:00,645 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 18:49:01,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 18:49:01,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 18:49:01,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 18:49:01,085 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 18:49:01,086 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 18:49:01,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label09.c [2020-10-27 18:49:01,167 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17b456a36/4ac4e29693a444a3828b708c75268469/FLAG787a752c5 [2020-10-27 18:49:02,106 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 18:49:02,106 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label09.c [2020-10-27 18:49:02,134 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17b456a36/4ac4e29693a444a3828b708c75268469/FLAG787a752c5 [2020-10-27 18:49:02,649 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17b456a36/4ac4e29693a444a3828b708c75268469 [2020-10-27 18:49:02,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 18:49:02,658 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 18:49:02,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 18:49:02,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 18:49:02,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 18:49:02,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:49:02" (1/1) ... [2020-10-27 18:49:02,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66522ba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:49:02, skipping insertion in model container [2020-10-27 18:49:02,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:49:02" (1/1) ... [2020-10-27 18:49:02,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 18:49:02,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 18:49:03,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:49:03,869 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 18:49:04,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:49:04,502 INFO L208 MainTranslator]: Completed translation [2020-10-27 18:49:04,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:49:04 WrapperNode [2020-10-27 18:49:04,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 18:49:04,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 18:49:04,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 18:49:04,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 18:49:04,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:49:04" (1/1) ... [2020-10-27 18:49:04,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:49:04" (1/1) ... [2020-10-27 18:49:04,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:49:04" (1/1) ... [2020-10-27 18:49:04,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:49:04" (1/1) ... [2020-10-27 18:49:04,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:49:04" (1/1) ... [2020-10-27 18:49:04,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:49:04" (1/1) ... [2020-10-27 18:49:04,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:49:04" (1/1) ... [2020-10-27 18:49:04,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 18:49:04,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 18:49:04,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 18:49:04,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 18:49:04,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:49:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:49:04,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 18:49:04,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 18:49:04,902 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 18:49:04,902 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 18:49:04,902 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 18:49:04,902 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 18:49:04,903 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 18:49:04,903 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 18:49:04,903 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 18:49:04,903 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 18:49:04,903 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 18:49:04,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 18:49:04,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 18:49:04,904 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 18:49:04,904 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 18:49:04,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 18:49:04,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 18:49:04,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 18:49:04,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 18:49:04,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 18:49:04,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 18:49:14,725 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 18:49:14,726 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 18:49:14,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:49:14 BoogieIcfgContainer [2020-10-27 18:49:14,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 18:49:14,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 18:49:14,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 18:49:14,734 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 18:49:14,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:49:02" (1/3) ... [2020-10-27 18:49:14,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c3dd7f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:49:14, skipping insertion in model container [2020-10-27 18:49:14,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:49:04" (2/3) ... [2020-10-27 18:49:14,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c3dd7f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:49:14, skipping insertion in model container [2020-10-27 18:49:14,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:49:14" (3/3) ... [2020-10-27 18:49:14,737 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label09.c [2020-10-27 18:49:14,750 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 18:49:14,756 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 18:49:14,771 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 18:49:14,805 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 18:49:14,805 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 18:49:14,806 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 18:49:14,806 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 18:49:14,806 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 18:49:14,806 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 18:49:14,806 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 18:49:14,806 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 18:49:14,838 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-27 18:49:14,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 18:49:14,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:49:14,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:49:14,846 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:49:14,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:49:14,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1958731461, now seen corresponding path program 1 times [2020-10-27 18:49:14,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:49:14,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125510105] [2020-10-27 18:49:14,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:49:15,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:49:15,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:49:15,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:49:15,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 18:49:15,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:49:15,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-10-27 18:49:15,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:49:15,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:49:15,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:49:15,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 18:49:15,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:49:15,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:49:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:49:15,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:49:15,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:49:15,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:49:15,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:49:15,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 18:49:15,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:49:15,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:49:15,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:49:15,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:49:15,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:49:15,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:49:15,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125510105] [2020-10-27 18:49:15,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:49:15,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 18:49:15,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570372302] [2020-10-27 18:49:15,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 18:49:15,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:49:15,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 18:49:15,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 18:49:15,777 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-27 18:49:15,930 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 18:49:27,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:49:27,784 INFO L93 Difference]: Finished difference Result 1694 states and 3092 transitions. [2020-10-27 18:49:27,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:49:27,786 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-27 18:49:27,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:49:27,820 INFO L225 Difference]: With dead ends: 1694 [2020-10-27 18:49:27,820 INFO L226 Difference]: Without dead ends: 1010 [2020-10-27 18:49:27,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:49:27,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-10-27 18:49:27,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 992. [2020-10-27 18:49:27,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 992 states. [2020-10-27 18:49:28,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1527 transitions. [2020-10-27 18:49:28,006 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1527 transitions. Word has length 19 [2020-10-27 18:49:28,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:49:28,007 INFO L481 AbstractCegarLoop]: Abstraction has 992 states and 1527 transitions. [2020-10-27 18:49:28,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 18:49:28,007 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1527 transitions. [2020-10-27 18:49:28,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 18:49:28,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:49:28,013 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:49:28,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 18:49:28,014 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:49:28,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:49:28,015 INFO L82 PathProgramCache]: Analyzing trace with hash 509827258, now seen corresponding path program 1 times [2020-10-27 18:49:28,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:49:28,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814814403] [2020-10-27 18:49:28,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:49:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:49:28,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:49:28,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:49:29,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:49:29,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:49:29,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 18:49:29,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:49:29,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1395 [2020-10-27 18:49:29,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:49:29,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:49:29,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-27 18:49:29,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 18:49:29,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:49:29,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:49:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:49:29,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:49:29,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:49:29,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:49:29,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:49:29,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 18:49:29,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:49:29,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:49:29,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:49:29,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:49:29,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:49:29,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:49:29,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:49:29,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:49:29,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:49:29,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 18:49:29,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:49:29,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-27 18:49:29,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:49:29,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:49:29,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:49:29,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 18:49:29,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:49:29,913 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:49:29,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814814403] [2020-10-27 18:49:29,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:49:29,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:49:29,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446676766] [2020-10-27 18:49:29,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:49:29,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:49:29,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:49:29,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:49:29,925 INFO L87 Difference]: Start difference. First operand 992 states and 1527 transitions. Second operand 5 states. [2020-10-27 18:49:47,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:49:47,201 INFO L93 Difference]: Finished difference Result 2901 states and 4503 transitions. [2020-10-27 18:49:47,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:49:47,203 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-27 18:49:47,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:49:47,215 INFO L225 Difference]: With dead ends: 2901 [2020-10-27 18:49:47,215 INFO L226 Difference]: Without dead ends: 1915 [2020-10-27 18:49:47,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:49:47,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1915 states. [2020-10-27 18:49:47,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1915 to 1890. [2020-10-27 18:49:47,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1890 states. [2020-10-27 18:49:47,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 2684 transitions. [2020-10-27 18:49:47,281 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 2684 transitions. Word has length 90 [2020-10-27 18:49:47,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:49:47,282 INFO L481 AbstractCegarLoop]: Abstraction has 1890 states and 2684 transitions. [2020-10-27 18:49:47,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:49:47,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 2684 transitions. [2020-10-27 18:49:47,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 18:49:47,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:49:47,285 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:49:47,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 18:49:47,285 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:49:47,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:49:47,286 INFO L82 PathProgramCache]: Analyzing trace with hash -2108306257, now seen corresponding path program 1 times [2020-10-27 18:49:47,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:49:47,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038983124] [2020-10-27 18:49:47,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:49:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:49:47,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:49:47,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:49:47,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 18:49:47,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:49:47,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-27 18:49:47,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:49:47,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:49:47,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-27 18:49:47,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 18:49:47,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:49:47,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:49:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:49:47,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:49:47,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:49:47,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:49:47,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:49:47,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:49:47,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:49:47,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:49:47,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:49:47,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:49:47,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:49:47,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:49:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:49:47,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:49:47,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:49:47,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 18:49:47,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:49:47,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 18:49:47,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:49:47,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:49:47,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:49:47,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 18:49:47,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:49:47,845 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:49:47,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038983124] [2020-10-27 18:49:47,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:49:47,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:49:47,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467564366] [2020-10-27 18:49:47,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:49:47,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:49:47,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:49:47,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:49:47,848 INFO L87 Difference]: Start difference. First operand 1890 states and 2684 transitions. Second operand 5 states. [2020-10-27 18:50:06,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:50:06,772 INFO L93 Difference]: Finished difference Result 3782 states and 5766 transitions. [2020-10-27 18:50:06,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:50:06,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-27 18:50:06,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:50:06,790 INFO L225 Difference]: With dead ends: 3782 [2020-10-27 18:50:06,791 INFO L226 Difference]: Without dead ends: 2790 [2020-10-27 18:50:06,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:50:06,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2020-10-27 18:50:06,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 2784. [2020-10-27 18:50:06,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2784 states. [2020-10-27 18:50:06,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 3796 transitions. [2020-10-27 18:50:06,886 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 3796 transitions. Word has length 93 [2020-10-27 18:50:06,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:50:06,887 INFO L481 AbstractCegarLoop]: Abstraction has 2784 states and 3796 transitions. [2020-10-27 18:50:06,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:50:06,887 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 3796 transitions. [2020-10-27 18:50:06,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 18:50:06,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:50:06,889 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:50:06,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 18:50:06,890 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:50:06,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:50:06,891 INFO L82 PathProgramCache]: Analyzing trace with hash -212185325, now seen corresponding path program 1 times [2020-10-27 18:50:06,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:50:06,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077543324] [2020-10-27 18:50:06,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:50:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:50:06,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:50:07,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:50:07,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:50:07,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 18:50:07,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:50:07,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 973 [2020-10-27 18:50:07,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:50:07,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:50:07,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 18:50:07,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 18:50:07,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 18:50:08,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:50:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:50:08,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:50:08,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:50:08,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:50:08,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:50:08,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 18:50:08,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:50:08,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:50:08,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:50:08,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:50:08,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:50:08,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:50:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:50:08,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:50:08,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:50:08,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:50:08,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:50:08,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 18:50:08,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:50:08,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:50:08,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:50:08,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 18:50:08,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:50:08,317 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:50:08,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077543324] [2020-10-27 18:50:08,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:50:08,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:50:08,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412595461] [2020-10-27 18:50:08,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:50:08,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:50:08,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:50:08,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:50:08,332 INFO L87 Difference]: Start difference. First operand 2784 states and 3796 transitions. Second operand 5 states. [2020-10-27 18:50:26,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:50:26,441 INFO L93 Difference]: Finished difference Result 6484 states and 9160 transitions. [2020-10-27 18:50:26,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:50:26,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-27 18:50:26,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:50:26,477 INFO L225 Difference]: With dead ends: 6484 [2020-10-27 18:50:26,477 INFO L226 Difference]: Without dead ends: 4598 [2020-10-27 18:50:26,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:50:26,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4598 states. [2020-10-27 18:50:26,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4598 to 4556. [2020-10-27 18:50:26,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4556 states. [2020-10-27 18:50:26,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4556 states to 4556 states and 6249 transitions. [2020-10-27 18:50:26,656 INFO L78 Accepts]: Start accepts. Automaton has 4556 states and 6249 transitions. Word has length 95 [2020-10-27 18:50:26,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:50:26,657 INFO L481 AbstractCegarLoop]: Abstraction has 4556 states and 6249 transitions. [2020-10-27 18:50:26,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:50:26,657 INFO L276 IsEmpty]: Start isEmpty. Operand 4556 states and 6249 transitions. [2020-10-27 18:50:26,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 18:50:26,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:50:26,666 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:50:26,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 18:50:26,667 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:50:26,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:50:26,667 INFO L82 PathProgramCache]: Analyzing trace with hash 731263306, now seen corresponding path program 1 times [2020-10-27 18:50:26,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:50:26,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370744948] [2020-10-27 18:50:26,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:50:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:50:26,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:50:26,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:50:27,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:50:27,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:50:27,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:50:27,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1064 [2020-10-27 18:50:27,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:50:27,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:50:27,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-27 18:50:27,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 18:50:27,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:50:27,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:50:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:50:27,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:50:27,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:50:27,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:50:27,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:50:27,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:50:27,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:50:27,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:50:27,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:50:27,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:50:27,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:50:27,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:50:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:50:27,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:50:28,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:50:28,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 18:50:28,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:50:28,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-27 18:50:28,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:50:28,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:50:28,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:50:28,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:50:28,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:50:28,089 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:50:28,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370744948] [2020-10-27 18:50:28,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:50:28,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:50:28,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311732137] [2020-10-27 18:50:28,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:50:28,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:50:28,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:50:28,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:50:28,092 INFO L87 Difference]: Start difference. First operand 4556 states and 6249 transitions. Second operand 5 states. [2020-10-27 18:50:45,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:50:45,259 INFO L93 Difference]: Finished difference Result 10890 states and 15165 transitions. [2020-10-27 18:50:45,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:50:45,262 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-27 18:50:45,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:50:45,296 INFO L225 Difference]: With dead ends: 10890 [2020-10-27 18:50:45,296 INFO L226 Difference]: Without dead ends: 6340 [2020-10-27 18:50:45,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:50:45,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6340 states. [2020-10-27 18:50:45,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6340 to 6318. [2020-10-27 18:50:45,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6318 states. [2020-10-27 18:50:45,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6318 states to 6318 states and 8477 transitions. [2020-10-27 18:50:45,507 INFO L78 Accepts]: Start accepts. Automaton has 6318 states and 8477 transitions. Word has length 98 [2020-10-27 18:50:45,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:50:45,507 INFO L481 AbstractCegarLoop]: Abstraction has 6318 states and 8477 transitions. [2020-10-27 18:50:45,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:50:45,507 INFO L276 IsEmpty]: Start isEmpty. Operand 6318 states and 8477 transitions. [2020-10-27 18:50:45,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-27 18:50:45,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:50:45,511 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:50:45,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 18:50:45,511 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:50:45,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:50:45,512 INFO L82 PathProgramCache]: Analyzing trace with hash 518561326, now seen corresponding path program 1 times [2020-10-27 18:50:45,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:50:45,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405720729] [2020-10-27 18:50:45,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:50:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:50:45,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:50:45,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:50:46,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:50:46,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 18:50:46,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:50:46,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1051 [2020-10-27 18:50:46,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:50:46,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:50:46,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-27 18:50:46,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 18:50:46,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:50:46,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:50:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:50:46,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:50:46,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:50:46,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:50:46,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:50:46,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 18:50:46,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:50:46,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:50:46,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:50:46,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:50:46,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:50:46,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:50:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:50:46,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:50:46,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:50:46,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 18:50:46,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:50:46,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-27 18:50:46,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:50:46,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:50:46,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:50:46,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 18:50:46,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:50:47,000 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:50:47,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405720729] [2020-10-27 18:50:47,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:50:47,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:50:47,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728718989] [2020-10-27 18:50:47,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:50:47,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:50:47,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:50:47,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:50:47,004 INFO L87 Difference]: Start difference. First operand 6318 states and 8477 transitions. Second operand 5 states. [2020-10-27 18:51:04,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:51:04,959 INFO L93 Difference]: Finished difference Result 14393 states and 19828 transitions. [2020-10-27 18:51:04,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:51:04,961 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-27 18:51:04,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:51:05,021 INFO L225 Difference]: With dead ends: 14393 [2020-10-27 18:51:05,021 INFO L226 Difference]: Without dead ends: 9413 [2020-10-27 18:51:05,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:51:05,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9413 states. [2020-10-27 18:51:05,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9413 to 9405. [2020-10-27 18:51:05,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9405 states. [2020-10-27 18:51:05,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9405 states to 9405 states and 12005 transitions. [2020-10-27 18:51:05,292 INFO L78 Accepts]: Start accepts. Automaton has 9405 states and 12005 transitions. Word has length 116 [2020-10-27 18:51:05,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:51:05,293 INFO L481 AbstractCegarLoop]: Abstraction has 9405 states and 12005 transitions. [2020-10-27 18:51:05,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:51:05,293 INFO L276 IsEmpty]: Start isEmpty. Operand 9405 states and 12005 transitions. [2020-10-27 18:51:05,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 18:51:05,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:51:05,295 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:51:05,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 18:51:05,296 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:51:05,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:51:05,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1615164938, now seen corresponding path program 1 times [2020-10-27 18:51:05,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:51:05,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569830584] [2020-10-27 18:51:05,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:51:05,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:51:05,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:05,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:05,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:05,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:08,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:08,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:10,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:51:10,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 18:51:10,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:51:10,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4679 [2020-10-27 18:51:10,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:51:10,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:51:10,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-27 18:51:10,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 18:51:10,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:51:10,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:51:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:51:10,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:10,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:51:10,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:51:10,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:51:10,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:51:10,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:51:10,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:51:10,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:51:10,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:51:10,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:51:10,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:51:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:51:10,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:10,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:51:10,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 18:51:10,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:51:10,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 18:51:10,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:51:10,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:51:10,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:51:10,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 18:51:10,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:51:10,378 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:51:10,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569830584] [2020-10-27 18:51:10,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:51:10,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:51:10,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718674110] [2020-10-27 18:51:10,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:51:10,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:51:10,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:51:10,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:51:10,382 INFO L87 Difference]: Start difference. First operand 9405 states and 12005 transitions. Second operand 6 states. [2020-10-27 18:51:34,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:51:34,449 INFO L93 Difference]: Finished difference Result 31054 states and 41356 transitions. [2020-10-27 18:51:34,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:51:34,451 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2020-10-27 18:51:34,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:51:34,532 INFO L225 Difference]: With dead ends: 31054 [2020-10-27 18:51:34,532 INFO L226 Difference]: Without dead ends: 21655 [2020-10-27 18:51:34,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:51:34,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21655 states. [2020-10-27 18:51:35,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21655 to 19486. [2020-10-27 18:51:35,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19486 states. [2020-10-27 18:51:35,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19486 states to 19486 states and 24947 transitions. [2020-10-27 18:51:35,117 INFO L78 Accepts]: Start accepts. Automaton has 19486 states and 24947 transitions. Word has length 120 [2020-10-27 18:51:35,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:51:35,118 INFO L481 AbstractCegarLoop]: Abstraction has 19486 states and 24947 transitions. [2020-10-27 18:51:35,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:51:35,118 INFO L276 IsEmpty]: Start isEmpty. Operand 19486 states and 24947 transitions. [2020-10-27 18:51:35,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 18:51:35,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:51:35,121 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:51:35,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 18:51:35,122 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:51:35,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:51:35,122 INFO L82 PathProgramCache]: Analyzing trace with hash -194254303, now seen corresponding path program 1 times [2020-10-27 18:51:35,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:51:35,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134197132] [2020-10-27 18:51:35,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:51:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:51:35,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:35,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:35,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:36,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:51:36,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 18:51:36,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:51:36,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1196 [2020-10-27 18:51:36,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:51:36,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:51:36,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 18:51:36,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 18:51:36,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:51:36,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:51:36,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:51:36,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:36,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:51:36,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:51:36,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:51:36,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:51:36,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:51:36,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:51:36,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:51:36,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:51:36,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:51:36,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:51:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:51:36,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:51:36,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:51:36,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 18:51:36,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:51:36,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-27 18:51:36,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:51:36,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:51:36,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:51:36,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 18:51:36,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:51:36,780 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:51:36,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134197132] [2020-10-27 18:51:36,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:51:36,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:51:36,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633406401] [2020-10-27 18:51:36,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:51:36,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:51:36,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:51:36,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:51:36,783 INFO L87 Difference]: Start difference. First operand 19486 states and 24947 transitions. Second operand 5 states. [2020-10-27 18:52:01,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:52:01,764 INFO L93 Difference]: Finished difference Result 46029 states and 59934 transitions. [2020-10-27 18:52:01,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:52:01,766 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-27 18:52:01,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:52:01,885 INFO L225 Difference]: With dead ends: 46029 [2020-10-27 18:52:01,885 INFO L226 Difference]: Without dead ends: 28757 [2020-10-27 18:52:01,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:52:01,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28757 states. [2020-10-27 18:52:02,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28757 to 28276. [2020-10-27 18:52:02,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28276 states. [2020-10-27 18:52:02,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28276 states to 28276 states and 36552 transitions. [2020-10-27 18:52:02,706 INFO L78 Accepts]: Start accepts. Automaton has 28276 states and 36552 transitions. Word has length 122 [2020-10-27 18:52:02,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:52:02,706 INFO L481 AbstractCegarLoop]: Abstraction has 28276 states and 36552 transitions. [2020-10-27 18:52:02,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:52:02,707 INFO L276 IsEmpty]: Start isEmpty. Operand 28276 states and 36552 transitions. [2020-10-27 18:52:02,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-27 18:52:02,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:52:02,710 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:52:02,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 18:52:02,711 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:52:02,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:52:02,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1496605801, now seen corresponding path program 1 times [2020-10-27 18:52:02,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:52:02,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999817222] [2020-10-27 18:52:02,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:52:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:52:02,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:52:03,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:52:04,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:52:04,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-27 18:52:04,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:52:04,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1361 [2020-10-27 18:52:04,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:52:04,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:52:04,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-27 18:52:04,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 18:52:04,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:52:04,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:52:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:52:04,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:52:04,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:52:04,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:52:04,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:52:04,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:52:04,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:52:04,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:52:04,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:52:04,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:52:04,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:52:04,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:52:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:52:04,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:52:04,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:52:04,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 18:52:04,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:52:04,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-27 18:52:04,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:52:04,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:52:04,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:52:04,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 18:52:04,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:52:04,575 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:52:04,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999817222] [2020-10-27 18:52:04,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:52:04,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:52:04,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020351551] [2020-10-27 18:52:04,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:52:04,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:52:04,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:52:04,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:52:04,586 INFO L87 Difference]: Start difference. First operand 28276 states and 36552 transitions. Second operand 5 states. [2020-10-27 18:52:05,557 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 18:52:26,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:52:26,428 INFO L93 Difference]: Finished difference Result 58308 states and 76367 transitions. [2020-10-27 18:52:26,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:52:26,432 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-27 18:52:26,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:52:26,568 INFO L225 Difference]: With dead ends: 58308 [2020-10-27 18:52:26,568 INFO L226 Difference]: Without dead ends: 32246 [2020-10-27 18:52:26,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:52:26,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32246 states. [2020-10-27 18:52:27,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32246 to 31787. [2020-10-27 18:52:27,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31787 states. [2020-10-27 18:52:27,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31787 states to 31787 states and 41110 transitions. [2020-10-27 18:52:27,721 INFO L78 Accepts]: Start accepts. Automaton has 31787 states and 41110 transitions. Word has length 147 [2020-10-27 18:52:27,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:52:27,722 INFO L481 AbstractCegarLoop]: Abstraction has 31787 states and 41110 transitions. [2020-10-27 18:52:27,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:52:27,722 INFO L276 IsEmpty]: Start isEmpty. Operand 31787 states and 41110 transitions. [2020-10-27 18:52:27,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-27 18:52:27,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:52:27,726 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:52:27,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 18:52:27,726 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:52:27,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:52:27,727 INFO L82 PathProgramCache]: Analyzing trace with hash 698264892, now seen corresponding path program 1 times [2020-10-27 18:52:27,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:52:27,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363738430] [2020-10-27 18:52:27,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:52:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:52:27,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:52:27,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:52:28,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:52:29,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:52:29,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:52:29,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-27 18:52:29,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:52:29,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2050 [2020-10-27 18:52:29,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:52:29,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:52:29,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-27 18:52:29,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 18:52:29,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:52:29,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:52:29,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:52:29,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:52:29,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:52:29,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:52:29,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:52:29,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:52:29,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:52:29,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:52:29,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:52:29,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:52:29,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:52:30,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:52:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:52:30,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:52:30,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:52:30,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:52:30,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 18:52:30,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:52:30,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-27 18:52:30,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:52:30,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:52:30,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 137 [2020-10-27 18:52:30,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:52:30,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:52:30,395 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:52:30,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363738430] [2020-10-27 18:52:30,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:52:30,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:52:30,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183796879] [2020-10-27 18:52:30,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:52:30,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:52:30,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:52:30,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:52:30,398 INFO L87 Difference]: Start difference. First operand 31787 states and 41110 transitions. Second operand 6 states. [2020-10-27 18:52:30,603 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 18:52:32,716 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-27 18:53:01,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:53:01,007 INFO L93 Difference]: Finished difference Result 93697 states and 128323 transitions. [2020-10-27 18:53:01,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:53:01,010 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2020-10-27 18:53:01,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:53:01,309 INFO L225 Difference]: With dead ends: 93697 [2020-10-27 18:53:01,310 INFO L226 Difference]: Without dead ends: 61916 [2020-10-27 18:53:01,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:53:01,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61916 states.