/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/Problem18_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:16:37,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:16:37,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:16:37,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:16:37,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:16:37,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:16:37,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:16:37,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:16:37,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:16:37,506 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:16:37,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:16:37,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:16:37,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:16:37,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:16:37,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:16:37,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:16:37,523 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:16:37,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:16:37,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:16:37,543 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:16:37,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:16:37,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:16:37,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:16:37,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:16:37,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:16:37,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:16:37,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:16:37,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:16:37,580 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:16:37,581 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:16:37,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:16:37,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:16:37,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:16:37,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:16:37,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:16:37,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:16:37,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:16:37,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:16:37,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:16:37,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:16:37,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:16:37,599 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 19:16:37,655 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:16:37,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:16:37,660 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:16:37,661 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:16:37,661 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:16:37,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:16:37,661 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:16:37,662 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:16:37,662 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:16:37,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:16:37,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:16:37,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:16:37,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:16:37,664 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:16:37,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:16:37,664 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:16:37,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:16:37,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:16:37,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:16:37,665 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:16:37,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:16:37,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:16:37,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:16:37,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:16:37,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:16:37,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:16:37,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:16:37,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:16:37,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:16:37,667 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:16:38,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:16:38,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:16:38,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:16:38,134 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:16:38,135 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:16:38,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label56.c [2020-10-27 19:16:38,233 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5197e8a5/0a84469b04024e6cadc2094a93182a95/FLAGb6f1ac691 [2020-10-27 19:16:39,270 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:16:39,271 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label56.c [2020-10-27 19:16:39,304 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5197e8a5/0a84469b04024e6cadc2094a93182a95/FLAGb6f1ac691 [2020-10-27 19:16:39,743 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5197e8a5/0a84469b04024e6cadc2094a93182a95 [2020-10-27 19:16:39,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:16:39,757 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:16:39,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:16:39,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:16:39,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:16:39,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:16:39" (1/1) ... [2020-10-27 19:16:39,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aa736ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:16:39, skipping insertion in model container [2020-10-27 19:16:39,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:16:39" (1/1) ... [2020-10-27 19:16:39,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:16:39,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:16:41,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:16:41,187 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:16:41,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:16:41,708 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:16:41,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:16:41 WrapperNode [2020-10-27 19:16:41,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:16:41,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:16:41,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:16:41,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:16:41,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:16:41" (1/1) ... [2020-10-27 19:16:41,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:16:41" (1/1) ... [2020-10-27 19:16:41,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:16:41" (1/1) ... [2020-10-27 19:16:41,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:16:41" (1/1) ... [2020-10-27 19:16:41,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:16:41" (1/1) ... [2020-10-27 19:16:42,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:16:41" (1/1) ... [2020-10-27 19:16:42,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:16:41" (1/1) ... [2020-10-27 19:16:42,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:16:42,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:16:42,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:16:42,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:16:42,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:16:41" (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 19:16:42,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:16:42,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:16:42,166 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:16:42,167 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 19:16:42,167 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 19:16:42,168 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 19:16:42,168 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:16:42,168 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 19:16:42,169 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 19:16:42,169 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 19:16:42,170 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:16:42,170 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:16:42,170 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:16:42,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:16:42,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 19:16:42,171 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 19:16:42,171 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:16:42,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:16:42,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:16:42,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:16:42,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:16:42,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:16:42,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:16:46,430 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:16:46,430 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 19:16:46,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:16:46 BoogieIcfgContainer [2020-10-27 19:16:46,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:16:46,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:16:46,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:16:46,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:16:46,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:16:39" (1/3) ... [2020-10-27 19:16:46,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a3eecd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:16:46, skipping insertion in model container [2020-10-27 19:16:46,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:16:41" (2/3) ... [2020-10-27 19:16:46,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a3eecd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:16:46, skipping insertion in model container [2020-10-27 19:16:46,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:16:46" (3/3) ... [2020-10-27 19:16:46,444 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label56.c [2020-10-27 19:16:46,458 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:16:46,465 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:16:46,479 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:16:46,518 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:16:46,519 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:16:46,519 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:16:46,519 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:16:46,519 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:16:46,519 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:16:46,519 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:16:46,519 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:16:46,618 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 19:16:46,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 19:16:46,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:16:46,630 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:16:46,630 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:16:46,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:16:46,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1502869208, now seen corresponding path program 1 times [2020-10-27 19:16:46,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:16:46,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130952545] [2020-10-27 19:16:46,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:16:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:16:46,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:16:47,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:16:47,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 19:16:47,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:16:47,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 618 [2020-10-27 19:16:47,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:16:47,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:16:47,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:16:47,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 19:16:47,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:16:47,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:16:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:16:47,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:16:47,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:16:47,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:16:47,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:16:47,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 19:16:47,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:16:47,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:16:47,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:16:47,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:16:47,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:16:47,765 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 19:16:47,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130952545] [2020-10-27 19:16:47,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:16:47,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 19:16:47,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603229642] [2020-10-27 19:16:47,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:16:47,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:16:47,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:16:47,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:16:47,807 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-27 19:17:06,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:17:06,598 INFO L93 Difference]: Finished difference Result 2989 states and 5775 transitions. [2020-10-27 19:17:06,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 19:17:06,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-27 19:17:06,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:17:06,643 INFO L225 Difference]: With dead ends: 2989 [2020-10-27 19:17:06,644 INFO L226 Difference]: Without dead ends: 2143 [2020-10-27 19:17:06,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:17:06,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-27 19:17:06,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-27 19:17:06,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-27 19:17:06,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3572 transitions. [2020-10-27 19:17:06,847 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3572 transitions. Word has length 55 [2020-10-27 19:17:06,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:17:06,848 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3572 transitions. [2020-10-27 19:17:06,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:17:06,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3572 transitions. [2020-10-27 19:17:06,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-27 19:17:06,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:17:06,856 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 19:17:06,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:17:06,857 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:17:06,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:17:06,858 INFO L82 PathProgramCache]: Analyzing trace with hash 277278229, now seen corresponding path program 1 times [2020-10-27 19:17:06,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:17:06,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497099664] [2020-10-27 19:17:06,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:17:06,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:17:06,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:17:07,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:17:07,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:17:08,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:17:08,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-27 19:17:08,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:17:08,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1602 [2020-10-27 19:17:08,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:17:08,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:17:08,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-27 19:17:08,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 19:17:08,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:17:08,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:17:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:17:08,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:17:08,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:17:08,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:17:08,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:17:08,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:17:08,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:17:08,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:17:08,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:17:08,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:17:08,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:17:08,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:17:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:17:08,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:17:08,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:17:08,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 19:17:08,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:17:08,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-27 19:17:08,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:17:08,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:17:08,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:17:08,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 19:17:08,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:17:08,893 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:17:08,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497099664] [2020-10-27 19:17:08,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:17:08,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:17:08,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398789223] [2020-10-27 19:17:08,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:17:08,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:17:08,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:17:08,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:17:08,898 INFO L87 Difference]: Start difference. First operand 2136 states and 3572 transitions. Second operand 5 states. [2020-10-27 19:17:22,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:17:22,545 INFO L93 Difference]: Finished difference Result 6411 states and 10807 transitions. [2020-10-27 19:17:22,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:17:22,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-27 19:17:22,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:17:22,583 INFO L225 Difference]: With dead ends: 6411 [2020-10-27 19:17:22,583 INFO L226 Difference]: Without dead ends: 4281 [2020-10-27 19:17:22,590 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 19:17:22,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4281 states. [2020-10-27 19:17:22,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4281 to 4277. [2020-10-27 19:17:22,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4277 states. [2020-10-27 19:17:22,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4277 states to 4277 states and 6382 transitions. [2020-10-27 19:17:22,769 INFO L78 Accepts]: Start accepts. Automaton has 4277 states and 6382 transitions. Word has length 143 [2020-10-27 19:17:22,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:17:22,774 INFO L481 AbstractCegarLoop]: Abstraction has 4277 states and 6382 transitions. [2020-10-27 19:17:22,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:17:22,774 INFO L276 IsEmpty]: Start isEmpty. Operand 4277 states and 6382 transitions. [2020-10-27 19:17:22,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-27 19:17:22,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:17:22,788 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 19:17:22,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:17:22,789 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:17:22,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:17:22,793 INFO L82 PathProgramCache]: Analyzing trace with hash -2118349971, now seen corresponding path program 1 times [2020-10-27 19:17:22,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:17:22,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726782282] [2020-10-27 19:17:22,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:17:22,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:17:22,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:17:23,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:17:24,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:17:24,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-27 19:17:24,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:17:24,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1258 [2020-10-27 19:17:24,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:17:24,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:17:24,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 19:17:24,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 19:17:24,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:17:24,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:17:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:17:24,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:17:24,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:17:24,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:17:24,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:17:24,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 19:17:24,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:17:24,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:17:24,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:17:24,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:17:24,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:17:24,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:17:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:17:24,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:17:24,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:17:24,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 19:17:24,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:17:24,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-27 19:17:24,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:17:24,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:17:24,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:17:24,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-27 19:17:24,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:17:24,594 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:17:24,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726782282] [2020-10-27 19:17:24,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:17:24,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:17:24,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925633731] [2020-10-27 19:17:24,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:17:24,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:17:24,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:17:24,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:17:24,600 INFO L87 Difference]: Start difference. First operand 4277 states and 6382 transitions. Second operand 5 states. [2020-10-27 19:17:37,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:17:37,757 INFO L93 Difference]: Finished difference Result 12809 states and 19393 transitions. [2020-10-27 19:17:37,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:17:37,764 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-10-27 19:17:37,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:17:37,817 INFO L225 Difference]: With dead ends: 12809 [2020-10-27 19:17:37,818 INFO L226 Difference]: Without dead ends: 8538 [2020-10-27 19:17:37,830 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 19:17:37,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8538 states. [2020-10-27 19:17:38,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8538 to 8534. [2020-10-27 19:17:38,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8534 states. [2020-10-27 19:17:38,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8534 states to 8534 states and 12013 transitions. [2020-10-27 19:17:38,098 INFO L78 Accepts]: Start accepts. Automaton has 8534 states and 12013 transitions. Word has length 187 [2020-10-27 19:17:38,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:17:38,100 INFO L481 AbstractCegarLoop]: Abstraction has 8534 states and 12013 transitions. [2020-10-27 19:17:38,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:17:38,100 INFO L276 IsEmpty]: Start isEmpty. Operand 8534 states and 12013 transitions. [2020-10-27 19:17:38,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-27 19:17:38,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:17:38,105 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 19:17:38,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:17:38,105 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:17:38,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:17:38,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1278728607, now seen corresponding path program 1 times [2020-10-27 19:17:38,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:17:38,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066740640] [2020-10-27 19:17:38,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:17:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:17:38,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:17:38,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:17:39,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:17:39,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-27 19:17:39,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:17:39,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1151 [2020-10-27 19:17:39,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:17:39,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:17:39,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-27 19:17:39,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 19:17:39,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:17:39,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:17:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:17:39,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:17:39,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:17:39,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:17:39,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:17:39,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:17:39,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:17:39,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:17:39,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:17:39,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:17:39,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:17:39,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:17:39,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:17:39,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:17:39,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:17:39,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 19:17:39,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:17:39,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-27 19:17:39,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:17:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:17:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:17:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 19:17:39,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:17:39,710 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:17:39,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066740640] [2020-10-27 19:17:39,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:17:39,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:17:39,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255774376] [2020-10-27 19:17:39,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:17:39,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:17:39,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:17:39,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:17:39,713 INFO L87 Difference]: Start difference. First operand 8534 states and 12013 transitions. Second operand 5 states. [2020-10-27 19:17:53,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:17:53,739 INFO L93 Difference]: Finished difference Result 21331 states and 31092 transitions. [2020-10-27 19:17:53,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:17:53,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 192 [2020-10-27 19:17:53,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:17:53,890 INFO L225 Difference]: With dead ends: 21331 [2020-10-27 19:17:53,890 INFO L226 Difference]: Without dead ends: 12803 [2020-10-27 19:17:53,910 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 19:17:53,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12803 states. [2020-10-27 19:17:54,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12803 to 12799. [2020-10-27 19:17:54,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12799 states. [2020-10-27 19:17:54,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12799 states to 12799 states and 17592 transitions. [2020-10-27 19:17:54,260 INFO L78 Accepts]: Start accepts. Automaton has 12799 states and 17592 transitions. Word has length 192 [2020-10-27 19:17:54,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:17:54,261 INFO L481 AbstractCegarLoop]: Abstraction has 12799 states and 17592 transitions. [2020-10-27 19:17:54,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:17:54,261 INFO L276 IsEmpty]: Start isEmpty. Operand 12799 states and 17592 transitions. [2020-10-27 19:17:54,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-27 19:17:54,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:17:54,272 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:17:54,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 19:17:54,273 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:17:54,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:17:54,274 INFO L82 PathProgramCache]: Analyzing trace with hash 165376744, now seen corresponding path program 1 times [2020-10-27 19:17:54,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:17:54,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075800847] [2020-10-27 19:17:54,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:17:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:17:54,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:17:54,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:17:55,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:17:56,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:17:59,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:17:59,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-27 19:17:59,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 19:17:59,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4913 [2020-10-27 19:17:59,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:17:59,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:17:59,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 242 [2020-10-27 19:17:59,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 19:17:59,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:17:59,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:17:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:17:59,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:17:59,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:17:59,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:17:59,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:17:59,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:17:59,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:17:59,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:17:59,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:17:59,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:17:59,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:17:59,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:17:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:17:59,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:17:59,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:17:59,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 19:17:59,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:17:59,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 19:17:59,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:17:59,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:17:59,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:17:59,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:17:59,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:17:59,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 19:17:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:17:59,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:17:59,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:17:59,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 19:17:59,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:17:59,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-27 19:17:59,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:17:59,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:17:59,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:17:59,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-27 19:17:59,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:17:59,861 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-27 19:17:59,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075800847] [2020-10-27 19:17:59,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:17:59,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:17:59,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384232363] [2020-10-27 19:17:59,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:17:59,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:17:59,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:17:59,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:17:59,864 INFO L87 Difference]: Start difference. First operand 12799 states and 17592 transitions. Second operand 5 states. [2020-10-27 19:18:14,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:18:14,243 INFO L93 Difference]: Finished difference Result 31264 states and 44114 transitions. [2020-10-27 19:18:14,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:18:14,248 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 285 [2020-10-27 19:18:14,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:18:14,318 INFO L225 Difference]: With dead ends: 31264 [2020-10-27 19:18:14,318 INFO L226 Difference]: Without dead ends: 18471 [2020-10-27 19:18:14,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 19:18:14,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18471 states. [2020-10-27 19:18:14,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18471 to 18467. [2020-10-27 19:18:14,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18467 states. [2020-10-27 19:18:14,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18467 states to 18467 states and 25870 transitions. [2020-10-27 19:18:14,953 INFO L78 Accepts]: Start accepts. Automaton has 18467 states and 25870 transitions. Word has length 285 [2020-10-27 19:18:14,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:18:14,954 INFO L481 AbstractCegarLoop]: Abstraction has 18467 states and 25870 transitions. [2020-10-27 19:18:14,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:18:14,954 INFO L276 IsEmpty]: Start isEmpty. Operand 18467 states and 25870 transitions. [2020-10-27 19:18:14,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-10-27 19:18:14,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:18:14,976 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:18:14,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 19:18:14,977 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:18:14,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:18:14,978 INFO L82 PathProgramCache]: Analyzing trace with hash -990512341, now seen corresponding path program 1 times [2020-10-27 19:18:14,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:18:14,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427554949] [2020-10-27 19:18:14,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:18:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:18:15,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:15,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:17,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:18:17,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-27 19:18:17,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:18:17,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2033 [2020-10-27 19:18:17,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:18:17,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:18:17,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 314 [2020-10-27 19:18:17,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 19:18:17,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:18:17,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:18:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:18:17,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:17,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:18:17,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:18:17,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:18:17,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:18:17,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:18:17,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:18:17,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:18:17,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:18:17,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:18:17,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:18:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:18:17,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:17,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:18:17,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-27 19:18:17,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:18:17,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-27 19:18:17,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:18:17,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:18:17,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:18:17,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 299 [2020-10-27 19:18:17,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:18:17,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:18:17,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:18:17,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:17,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:18:17,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 19:18:17,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:18:17,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 19:18:17,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:18:17,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:18:17,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:18:17,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 19:18:17,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:18:17,979 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:18:17,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427554949] [2020-10-27 19:18:17,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:18:17,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:18:17,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737365690] [2020-10-27 19:18:17,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:18:17,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:18:17,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:18:17,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:18:17,984 INFO L87 Difference]: Start difference. First operand 18467 states and 25870 transitions. Second operand 5 states. [2020-10-27 19:18:29,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:18:29,728 INFO L93 Difference]: Finished difference Result 53214 states and 76387 transitions. [2020-10-27 19:18:29,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:18:29,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 360 [2020-10-27 19:18:29,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:18:29,881 INFO L225 Difference]: With dead ends: 53214 [2020-10-27 19:18:29,881 INFO L226 Difference]: Without dead ends: 34753 [2020-10-27 19:18:29,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 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 19:18:29,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34753 states. [2020-10-27 19:18:30,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34753 to 34749. [2020-10-27 19:18:30,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34749 states. [2020-10-27 19:18:30,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34749 states to 34749 states and 45492 transitions. [2020-10-27 19:18:30,752 INFO L78 Accepts]: Start accepts. Automaton has 34749 states and 45492 transitions. Word has length 360 [2020-10-27 19:18:30,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:18:30,753 INFO L481 AbstractCegarLoop]: Abstraction has 34749 states and 45492 transitions. [2020-10-27 19:18:30,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:18:30,753 INFO L276 IsEmpty]: Start isEmpty. Operand 34749 states and 45492 transitions. [2020-10-27 19:18:30,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-10-27 19:18:30,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:18:30,781 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:18:30,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 19:18:30,781 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:18:30,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:18:30,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1023685886, now seen corresponding path program 1 times [2020-10-27 19:18:30,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:18:30,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059547318] [2020-10-27 19:18:30,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:18:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:18:30,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:30,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:32,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:32,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:35,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:18:35,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 397 [2020-10-27 19:18:35,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 19:18:35,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-27 19:18:35,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:18:35,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:18:35,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 340 [2020-10-27 19:18:35,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 19:18:35,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:18:36,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:18:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:18:36,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:36,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:18:36,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:18:36,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:18:36,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:18:36,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:18:36,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:18:36,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:18:36,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:18:36,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:18:36,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:18:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:18:36,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:36,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:18:36,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 19:18:36,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:18:36,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 19:18:36,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:18:36,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:18:36,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:18:36,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:18:36,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:18:36,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 19:18:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:18:36,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:36,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:18:36,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-27 19:18:36,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:18:36,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-27 19:18:36,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:18:36,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:18:36,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:18:36,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 247 [2020-10-27 19:18:36,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:18:36,638 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-27 19:18:36,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059547318] [2020-10-27 19:18:36,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:18:36,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:18:36,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953424286] [2020-10-27 19:18:36,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:18:36,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:18:36,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:18:36,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:18:36,642 INFO L87 Difference]: Start difference. First operand 34749 states and 45492 transitions. Second operand 5 states. [2020-10-27 19:18:51,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:18:51,872 INFO L93 Difference]: Finished difference Result 80826 states and 108498 transitions. [2020-10-27 19:18:51,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:18:51,873 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 383 [2020-10-27 19:18:51,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:18:52,067 INFO L225 Difference]: With dead ends: 80826 [2020-10-27 19:18:52,068 INFO L226 Difference]: Without dead ends: 46083 [2020-10-27 19:18:52,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 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 19:18:52,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46083 states. [2020-10-27 19:18:53,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46083 to 46079. [2020-10-27 19:18:53,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46079 states. [2020-10-27 19:18:53,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46079 states to 46079 states and 59386 transitions. [2020-10-27 19:18:53,475 INFO L78 Accepts]: Start accepts. Automaton has 46079 states and 59386 transitions. Word has length 383 [2020-10-27 19:18:53,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:18:53,476 INFO L481 AbstractCegarLoop]: Abstraction has 46079 states and 59386 transitions. [2020-10-27 19:18:53,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:18:53,476 INFO L276 IsEmpty]: Start isEmpty. Operand 46079 states and 59386 transitions. [2020-10-27 19:18:53,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2020-10-27 19:18:53,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:18:53,520 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:18:53,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 19:18:53,521 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:18:53,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:18:53,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1004425974, now seen corresponding path program 1 times [2020-10-27 19:18:53,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:18:53,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153184879] [2020-10-27 19:18:53,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:18:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:18:53,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:53,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:54,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:58,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:18:58,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 487 [2020-10-27 19:18:58,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:18:58,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 19:18:58,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:18:58,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:18:58,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-27 19:18:58,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 347 [2020-10-27 19:18:58,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:18:58,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:18:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:18:58,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:58,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:18:58,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:18:58,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:18:58,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:18:58,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:18:58,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:18:58,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:18:58,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:18:58,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:18:58,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:18:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:18:58,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:58,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:18:58,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 19:18:58,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:18:58,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 19:18:58,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:18:58,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:18:58,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:18:58,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 19:18:58,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:18:58,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 19:18:59,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:18:59,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:59,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:18:59,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-27 19:18:59,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:18:59,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 674 [2020-10-27 19:18:59,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:18:59,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:18:59,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:18:59,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 348 [2020-10-27 19:18:59,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:18:59,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:18:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:18:59,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:00,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:19:00,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 19:19:00,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:19:00,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-27 19:19:00,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:19:00,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:19:00,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:19:00,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 19:19:00,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:19:00,374 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 19:19:00,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153184879] [2020-10-27 19:19:00,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:19:00,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 19:19:00,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906853982] [2020-10-27 19:19:00,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 19:19:00,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:19:00,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 19:19:00,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 19:19:00,378 INFO L87 Difference]: Start difference. First operand 46079 states and 59386 transitions. Second operand 8 states. [2020-10-27 19:19:16,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:19:16,486 INFO L93 Difference]: Finished difference Result 105866 states and 139508 transitions. [2020-10-27 19:19:16,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 19:19:16,487 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 471 [2020-10-27 19:19:16,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:19:16,717 INFO L225 Difference]: With dead ends: 105866 [2020-10-27 19:19:16,717 INFO L226 Difference]: Without dead ends: 59793 [2020-10-27 19:19:16,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 19:19:16,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59793 states. [2020-10-27 19:19:17,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59793 to 59753. [2020-10-27 19:19:17,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59753 states. [2020-10-27 19:19:18,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59753 states to 59753 states and 77110 transitions. [2020-10-27 19:19:18,134 INFO L78 Accepts]: Start accepts. Automaton has 59753 states and 77110 transitions. Word has length 471 [2020-10-27 19:19:18,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:19:18,135 INFO L481 AbstractCegarLoop]: Abstraction has 59753 states and 77110 transitions. [2020-10-27 19:19:18,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 19:19:18,135 INFO L276 IsEmpty]: Start isEmpty. Operand 59753 states and 77110 transitions. [2020-10-27 19:19:18,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2020-10-27 19:19:18,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:19:18,191 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:19:18,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 19:19:18,192 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:19:18,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:19:18,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1036140610, now seen corresponding path program 1 times [2020-10-27 19:19:18,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:19:18,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897126236] [2020-10-27 19:19:18,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:19:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:19:18,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:18,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:19,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:23,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:19:23,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 513 [2020-10-27 19:19:23,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:19:23,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 19:19:23,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:19:23,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:19:23,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-27 19:19:23,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 347 [2020-10-27 19:19:23,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:19:23,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:19:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:19:23,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:23,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:19:23,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:19:23,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:19:23,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:19:23,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:19:23,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:19:23,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:19:23,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:19:23,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:19:23,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:19:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:19:23,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:23,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:19:23,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 19:19:23,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:19:23,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 19:19:23,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:19:23,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:19:23,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:19:23,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 19:19:23,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:19:23,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-27 19:19:23,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:19:23,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:24,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:19:24,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-27 19:19:24,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:19:24,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-10-27 19:19:24,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:19:24,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:19:24,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:19:24,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 348 [2020-10-27 19:19:24,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:19:24,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:19:24,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:19:24,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:24,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:19:24,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 19:19:24,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:19:24,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 19:19:24,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:19:24,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:19:24,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:19:24,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 19:19:24,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:19:24,858 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 19:19:24,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897126236] [2020-10-27 19:19:24,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:19:24,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 19:19:24,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379417501] [2020-10-27 19:19:24,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 19:19:24,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:19:24,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 19:19:24,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 19:19:24,861 INFO L87 Difference]: Start difference. First operand 59753 states and 77110 transitions. Second operand 8 states. [2020-10-27 19:19:25,000 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 19:19:45,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:19:45,703 INFO L93 Difference]: Finished difference Result 119785 states and 155299 transitions. [2020-10-27 19:19:45,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 19:19:45,704 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 497 [2020-10-27 19:19:45,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:19:45,918 INFO L225 Difference]: With dead ends: 119785 [2020-10-27 19:19:45,918 INFO L226 Difference]: Without dead ends: 60038 [2020-10-27 19:19:46,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-27 19:19:46,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60038 states. [2020-10-27 19:19:47,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60038 to 49462. [2020-10-27 19:19:47,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49462 states. [2020-10-27 19:19:47,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49462 states to 49462 states and 59273 transitions. [2020-10-27 19:19:47,397 INFO L78 Accepts]: Start accepts. Automaton has 49462 states and 59273 transitions. Word has length 497 [2020-10-27 19:19:47,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:19:47,398 INFO L481 AbstractCegarLoop]: Abstraction has 49462 states and 59273 transitions. [2020-10-27 19:19:47,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 19:19:47,399 INFO L276 IsEmpty]: Start isEmpty. Operand 49462 states and 59273 transitions. [2020-10-27 19:19:47,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2020-10-27 19:19:47,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:19:47,433 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:19:47,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 19:19:47,434 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:19:47,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:19:47,434 INFO L82 PathProgramCache]: Analyzing trace with hash -2139604614, now seen corresponding path program 1 times [2020-10-27 19:19:47,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:19:47,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312692330] [2020-10-27 19:19:47,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:19:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:19:47,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:47,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:49,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:50,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:52,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:19:52,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 538 [2020-10-27 19:19:52,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 19:19:52,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 19:19:52,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:19:52,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:19:52,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 478 [2020-10-27 19:19:52,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 19:19:52,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:19:52,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:19:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:19:52,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:52,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:19:52,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:19:52,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:19:52,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:19:52,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:19:52,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:19:52,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:19:52,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:19:52,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:19:52,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:19:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:19:52,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:52,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:19:52,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 19:19:52,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:19:52,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 19:19:52,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:19:52,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:19:52,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:19:52,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:19:52,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:19:52,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 19:19:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:19:52,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:53,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:19:53,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-27 19:19:53,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:19:53,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-27 19:19:53,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:19:53,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:19:53,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:19:53,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 339 [2020-10-27 19:19:53,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:19:53,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:19:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:19:53,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:53,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:19:53,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 19:19:53,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:19:53,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 19:19:53,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:19:53,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:19:53,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:19:53,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 19:19:53,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:19:53,380 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-27 19:19:53,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312692330] [2020-10-27 19:19:53,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:19:53,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:19:53,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166608562] [2020-10-27 19:19:53,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:19:53,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:19:53,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:19:53,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:19:53,383 INFO L87 Difference]: Start difference. First operand 49462 states and 59273 transitions. Second operand 5 states. [2020-10-27 19:20:10,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:20:10,641 INFO L93 Difference]: Finished difference Result 98930 states and 118669 transitions. [2020-10-27 19:20:10,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:20:10,643 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 522 [2020-10-27 19:20:10,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:20:10,781 INFO L225 Difference]: With dead ends: 98930 [2020-10-27 19:20:10,781 INFO L226 Difference]: Without dead ends: 49474 [2020-10-27 19:20:10,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 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 19:20:10,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49474 states. [2020-10-27 19:20:11,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49474 to 49468. [2020-10-27 19:20:11,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49468 states. [2020-10-27 19:20:11,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49468 states to 49468 states and 58772 transitions. [2020-10-27 19:20:11,665 INFO L78 Accepts]: Start accepts. Automaton has 49468 states and 58772 transitions. Word has length 522 [2020-10-27 19:20:11,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:20:11,666 INFO L481 AbstractCegarLoop]: Abstraction has 49468 states and 58772 transitions. [2020-10-27 19:20:11,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:20:11,666 INFO L276 IsEmpty]: Start isEmpty. Operand 49468 states and 58772 transitions. [2020-10-27 19:20:11,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2020-10-27 19:20:11,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:20:11,705 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:20:11,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 19:20:11,706 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:20:11,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:20:11,707 INFO L82 PathProgramCache]: Analyzing trace with hash 491482175, now seen corresponding path program 1 times [2020-10-27 19:20:11,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:20:11,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581141485] [2020-10-27 19:20:11,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:20:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:20:12,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:12,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:13,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:14,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:16,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:20:16,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 654 [2020-10-27 19:20:16,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 19:20:16,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-27 19:20:16,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:20:16,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:20:16,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 594 [2020-10-27 19:20:16,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 19:20:16,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:20:16,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:20:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:20:17,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:17,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:20:17,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:20:17,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:20:17,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:20:17,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:20:17,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:20:17,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:20:17,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:20:17,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:20:17,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:20:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:20:17,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:17,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:20:17,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 19:20:17,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:20:17,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 19:20:17,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:20:17,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:20:17,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:20:17,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:20:17,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:20:17,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 19:20:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:20:17,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:17,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:20:17,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 19:20:17,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:20:17,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 19:20:17,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:20:17,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:20:17,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:20:17,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:20:17,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:20:17,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-27 19:20:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:20:17,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:17,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:20:17,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 440 [2020-10-27 19:20:17,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:20:17,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-27 19:20:17,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:20:17,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:20:17,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:20:17,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 431 [2020-10-27 19:20:17,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:20:17,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:20:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:20:17,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:17,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:20:17,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-27 19:20:17,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:20:17,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 19:20:17,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:20:17,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:20:17,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:20:17,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-27 19:20:17,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:20:17,889 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 144 proven. 3 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2020-10-27 19:20:17,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581141485] [2020-10-27 19:20:17,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:20:17,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 19:20:17,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230189233] [2020-10-27 19:20:17,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:20:17,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:20:17,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:20:17,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:20:17,892 INFO L87 Difference]: Start difference. First operand 49468 states and 58772 transitions. Second operand 6 states.