/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/reducercommutativity/sum40-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:14:27,751 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:14:27,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:14:27,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:14:27,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:14:27,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:14:27,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:14:27,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:14:27,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:14:27,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:14:27,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:14:27,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:14:27,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:14:27,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:14:27,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:14:27,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:14:27,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:14:27,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:14:27,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:14:27,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:14:27,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:14:27,847 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:14:27,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:14:27,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:14:27,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:14:27,864 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:14:27,865 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:14:27,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:14:27,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:14:27,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:14:27,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:14:27,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:14:27,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:14:27,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:14:27,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:14:27,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:14:27,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:14:27,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:14:27,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:14:27,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:14:27,884 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:14:27,885 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 04:14:27,942 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:14:27,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:14:27,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:14:27,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:14:27,948 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:14:27,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:14:27,948 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:14:27,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:14:27,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:14:27,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:14:27,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:14:27,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:14:27,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:14:27,950 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:14:27,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:14:27,951 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:14:27,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:14:27,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:14:27,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:14:27,951 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:14:27,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:14:27,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:14:27,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:14:27,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:14:27,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:14:27,953 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:14:27,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:14:27,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:14:27,954 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:14:27,954 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:14:28,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:14:28,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:14:28,421 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:14:28,423 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:14:28,425 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:14:28,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sum40-2.i [2020-10-27 04:14:28,523 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e65f2541b/e0027ad6e1ce48579ca1be4bf2974e7b/FLAG09f30bb49 [2020-10-27 04:14:29,195 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:14:29,196 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sum40-2.i [2020-10-27 04:14:29,205 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e65f2541b/e0027ad6e1ce48579ca1be4bf2974e7b/FLAG09f30bb49 [2020-10-27 04:14:29,531 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e65f2541b/e0027ad6e1ce48579ca1be4bf2974e7b [2020-10-27 04:14:29,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:14:29,546 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:14:29,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:14:29,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:14:29,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:14:29,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:14:29" (1/1) ... [2020-10-27 04:14:29,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14685515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:29, skipping insertion in model container [2020-10-27 04:14:29,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:14:29" (1/1) ... [2020-10-27 04:14:29,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:14:29,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:14:29,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:14:29,896 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:14:29,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:14:29,981 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:14:29,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:29 WrapperNode [2020-10-27 04:14:29,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:14:29,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:14:29,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:14:29,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:14:30,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:29" (1/1) ... [2020-10-27 04:14:30,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:29" (1/1) ... [2020-10-27 04:14:30,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:29" (1/1) ... [2020-10-27 04:14:30,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:29" (1/1) ... [2020-10-27 04:14:30,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:29" (1/1) ... [2020-10-27 04:14:30,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:29" (1/1) ... [2020-10-27 04:14:30,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:29" (1/1) ... [2020-10-27 04:14:30,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:14:30,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:14:30,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:14:30,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:14:30,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:14:30,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:14:30,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:14:30,165 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:14:30,166 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-10-27 04:14:30,166 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:14:30,166 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:14:30,166 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:14:30,167 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 04:14:30,167 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 04:14:30,167 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:14:30,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:14:30,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 04:14:30,169 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-10-27 04:14:30,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:14:30,169 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:14:30,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:14:30,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:14:30,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:14:30,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:14:30,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:14:30,500 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:14:30,501 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 04:14:30,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:14:30 BoogieIcfgContainer [2020-10-27 04:14:30,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:14:30,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:14:30,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:14:30,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:14:30,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:14:29" (1/3) ... [2020-10-27 04:14:30,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1b7afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:14:30, skipping insertion in model container [2020-10-27 04:14:30,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:14:29" (2/3) ... [2020-10-27 04:14:30,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1b7afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:14:30, skipping insertion in model container [2020-10-27 04:14:30,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:14:30" (3/3) ... [2020-10-27 04:14:30,515 INFO L111 eAbstractionObserver]: Analyzing ICFG sum40-2.i [2020-10-27 04:14:30,531 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:14:30,537 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:14:30,554 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:14:30,584 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:14:30,585 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:14:30,585 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:14:30,586 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:14:30,586 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:14:30,586 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:14:30,586 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:14:30,587 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:14:30,608 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-27 04:14:30,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 04:14:30,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:30,623 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:14:30,627 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:30,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:30,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1900796497, now seen corresponding path program 1 times [2020-10-27 04:14:30,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:30,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593585481] [2020-10-27 04:14:30,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:30,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:31,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:31,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:31,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:31,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:31,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:32,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:32,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:14:32,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:14:32,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1677 [2020-10-27 04:14:32,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:32,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:32,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 04:14:32,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:32,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 04:14:32,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:32,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:32,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:32,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:32,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:32,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:14:32,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:32,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:32,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:32,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:32,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:32,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 04:14:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:32,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:32,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:32,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:32,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:14:32,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:32,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:14:32,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:32,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:32,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:14:32,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:32,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:32,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 04:14:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:32,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:32,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:32,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:32,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:14:32,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:32,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:14:32,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:32,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:32,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:14:32,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:32,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:32,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:14:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:32,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:32,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:32,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:32,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:14:32,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:32,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:14:32,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:32,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:32,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:14:32,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:32,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:32,692 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 04:14:32,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593585481] [2020-10-27 04:14:32,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:14:32,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 04:14:32,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882184202] [2020-10-27 04:14:32,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 04:14:32,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:32,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 04:14:32,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 04:14:32,733 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-10-27 04:14:32,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:32,852 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2020-10-27 04:14:32,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 04:14:32,854 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-27 04:14:32,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:32,863 INFO L225 Difference]: With dead ends: 60 [2020-10-27 04:14:32,864 INFO L226 Difference]: Without dead ends: 28 [2020-10-27 04:14:32,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 04:14:32,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-27 04:14:32,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-27 04:14:32,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-27 04:14:32,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-27 04:14:32,919 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 34 [2020-10-27 04:14:32,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:32,920 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-27 04:14:32,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 04:14:32,920 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-27 04:14:32,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 04:14:32,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:32,923 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:14:32,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:14:32,924 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:32,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:32,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1640105647, now seen corresponding path program 1 times [2020-10-27 04:14:32,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:32,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74087381] [2020-10-27 04:14:32,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:32,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:32,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:32,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:32,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:32,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:33,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:33,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:34,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:34,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:14:34,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:14:34,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1681 [2020-10-27 04:14:34,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:34,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:14:34,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:34,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:14:34,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:34,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:34,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:34,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:34,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:34,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:34,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:14:34,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:34,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:34,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:34,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:34,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:34,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 04:14:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:34,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:34,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:34,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:34,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:14:34,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:34,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:14:34,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:34,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:14:34,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:34,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:14:34,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:34,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 04:14:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:34,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:34,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:34,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:34,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:14:34,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:34,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:14:34,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:34,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:14:34,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:34,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:14:34,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:34,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:14:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:34,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:34,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:34,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:34,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:14:34,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:34,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:14:34,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:34,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:14:34,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:34,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:14:34,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:34,742 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 04:14:34,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74087381] [2020-10-27 04:14:34,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:14:34,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:14:34,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008606069] [2020-10-27 04:14:34,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:14:34,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:34,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:14:34,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:14:34,747 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-10-27 04:14:34,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:34,884 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2020-10-27 04:14:34,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:14:34,884 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-27 04:14:34,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:34,886 INFO L225 Difference]: With dead ends: 52 [2020-10-27 04:14:34,886 INFO L226 Difference]: Without dead ends: 32 [2020-10-27 04:14:34,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:14:34,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-27 04:14:34,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-10-27 04:14:34,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-27 04:14:34,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-27 04:14:34,897 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 34 [2020-10-27 04:14:34,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:34,898 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-27 04:14:34,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:14:34,898 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-27 04:14:34,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 04:14:34,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:34,900 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:14:34,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:14:34,900 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:34,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:34,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1537402351, now seen corresponding path program 1 times [2020-10-27 04:14:34,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:34,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675853454] [2020-10-27 04:14:34,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:34,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:34,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:34,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:34,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:34,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:35,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:39,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:39,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 04:14:39,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:14:39,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 04:14:39,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:39,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:14:39,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:39,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:14:39,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:39,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:39,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:39,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:39,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:39,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:39,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:39,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:14:39,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:39,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:39,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:39,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:39,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:14:39,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 04:14:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:39,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:40,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:40,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:40,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:14:40,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:40,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 04:14:40,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:40,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:14:40,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:40,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:14:40,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:14:40,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 04:14:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:40,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:40,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:40,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:40,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:14:40,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:40,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 04:14:40,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:40,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:14:40,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:40,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:14:40,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:40,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:14:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:40,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:40,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:40,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:40,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:14:40,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:40,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 04:14:40,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:40,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:14:40,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:40,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:14:40,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:40,145 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-27 04:14:40,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675853454] [2020-10-27 04:14:40,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:40,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 04:14:40,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16212184] [2020-10-27 04:14:40,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 04:14:40,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:40,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 04:14:40,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:14:40,152 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-10-27 04:14:40,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:40,455 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2020-10-27 04:14:40,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:14:40,456 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-10-27 04:14:40,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:40,459 INFO L225 Difference]: With dead ends: 57 [2020-10-27 04:14:40,459 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 04:14:40,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:14:40,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 04:14:40,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-27 04:14:40,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-27 04:14:40,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-27 04:14:40,480 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 42 [2020-10-27 04:14:40,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:40,481 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-27 04:14:40,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 04:14:40,481 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-27 04:14:40,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 04:14:40,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:40,487 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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] [2020-10-27 04:14:40,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:14:40,487 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:40,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:40,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1486624559, now seen corresponding path program 2 times [2020-10-27 04:14:40,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:40,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397600050] [2020-10-27 04:14:40,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:40,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:40,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:40,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:40,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:40,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:41,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:45,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:45,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 04:14:45,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:14:45,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 04:14:45,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:45,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:14:45,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:45,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:14:45,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:45,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:45,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:45,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:45,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:45,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:45,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:14:45,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:45,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:45,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:45,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:45,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:14:45,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 04:14:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:45,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:45,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:45,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:45,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:14:45,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:45,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 04:14:45,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:45,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:14:45,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:45,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:14:45,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:45,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 04:14:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:45,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:45,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:45,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:45,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:14:45,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:45,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 04:14:45,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:45,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:14:45,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:45,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:14:45,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:45,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 04:14:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:45,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:45,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:45,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:45,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:14:45,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:45,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 04:14:45,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:45,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:14:45,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:45,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:14:45,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:45,822 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 12 proven. 28 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-27 04:14:45,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397600050] [2020-10-27 04:14:45,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:45,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 04:14:45,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526035597] [2020-10-27 04:14:45,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:14:45,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:45,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:14:45,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:14:45,827 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 9 states. [2020-10-27 04:14:46,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:46,056 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-10-27 04:14:46,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 04:14:46,057 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2020-10-27 04:14:46,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:46,058 INFO L225 Difference]: With dead ends: 63 [2020-10-27 04:14:46,058 INFO L226 Difference]: Without dead ends: 40 [2020-10-27 04:14:46,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:14:46,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-27 04:14:46,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-10-27 04:14:46,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-27 04:14:46,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-10-27 04:14:46,067 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 50 [2020-10-27 04:14:46,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:46,068 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-10-27 04:14:46,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:14:46,068 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-10-27 04:14:46,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 04:14:46,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:46,069 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:14:46,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:14:46,069 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:46,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:46,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1972987281, now seen corresponding path program 3 times [2020-10-27 04:14:46,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:46,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723144243] [2020-10-27 04:14:46,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:46,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:46,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:46,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:46,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:48,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:51,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:51,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 04:14:51,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:14:51,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 04:14:51,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:51,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:14:51,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:51,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:14:51,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:51,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:51,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:51,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:51,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:51,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:51,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:14:51,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:51,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:51,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:51,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:51,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:51,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 04:14:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:51,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:51,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:51,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:51,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:14:51,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:51,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 04:14:51,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:51,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:14:51,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:51,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:14:51,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:51,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 04:14:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:51,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:51,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:51,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:51,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:14:51,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:51,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 04:14:51,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:51,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:14:51,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:51,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:14:51,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:51,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 04:14:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:51,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:51,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:51,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:51,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:14:51,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:51,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 04:14:51,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:51,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:14:51,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:51,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:14:51,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:51,393 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 27 proven. 63 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-27 04:14:51,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723144243] [2020-10-27 04:14:51,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:51,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 04:14:51,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044763944] [2020-10-27 04:14:51,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:14:51,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:51,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:14:51,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:14:51,397 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 11 states. [2020-10-27 04:14:51,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:51,712 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2020-10-27 04:14:51,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 04:14:51,714 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2020-10-27 04:14:51,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:51,715 INFO L225 Difference]: With dead ends: 69 [2020-10-27 04:14:51,715 INFO L226 Difference]: Without dead ends: 44 [2020-10-27 04:14:51,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:14:51,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-27 04:14:51,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-10-27 04:14:51,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-27 04:14:51,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-10-27 04:14:51,729 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 58 [2020-10-27 04:14:51,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:51,729 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-10-27 04:14:51,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:14:51,730 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-10-27 04:14:51,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 04:14:51,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:51,734 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:14:51,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:14:51,734 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:51,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:51,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1550094417, now seen corresponding path program 4 times [2020-10-27 04:14:51,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:51,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521384696] [2020-10-27 04:14:51,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:51,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:51,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:51,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:51,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:51,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:56,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:56,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:56,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 04:14:56,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:14:56,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 04:14:56,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:56,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:14:56,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:14:56,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:14:56,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:56,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:14:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:56,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:56,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:56,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:14:56,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:14:56,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:14:56,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:56,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:14:56,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:14:56,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:14:56,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:56,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 04:14:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:56,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:56,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:56,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:56,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 04:14:56,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:56,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 04:14:56,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:56,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:14:56,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:56,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:14:56,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:56,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 04:14:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:56,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:56,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:57,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:57,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 04:14:57,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:57,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 04:14:57,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:57,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:14:57,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:57,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:14:57,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:57,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:14:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:57,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:57,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:57,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:14:57,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 04:14:57,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:14:57,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 04:14:57,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:14:57,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:14:57,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:14:57,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:14:57,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:14:57,092 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 48 proven. 112 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-27 04:14:57,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521384696] [2020-10-27 04:14:57,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:14:57,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 04:14:57,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595889346] [2020-10-27 04:14:57,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:14:57,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:14:57,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:14:57,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:14:57,095 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 13 states. [2020-10-27 04:14:57,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:14:57,400 INFO L93 Difference]: Finished difference Result 75 states and 87 transitions. [2020-10-27 04:14:57,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 04:14:57,401 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2020-10-27 04:14:57,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:14:57,402 INFO L225 Difference]: With dead ends: 75 [2020-10-27 04:14:57,402 INFO L226 Difference]: Without dead ends: 48 [2020-10-27 04:14:57,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-27 04:14:57,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-27 04:14:57,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-10-27 04:14:57,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 04:14:57,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-27 04:14:57,415 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 66 [2020-10-27 04:14:57,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:14:57,415 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-27 04:14:57,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 04:14:57,416 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-27 04:14:57,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-27 04:14:57,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:14:57,419 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:14:57,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:14:57,419 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:14:57,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:14:57,419 INFO L82 PathProgramCache]: Analyzing trace with hash 407660817, now seen corresponding path program 5 times [2020-10-27 04:14:57,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:14:57,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279243702] [2020-10-27 04:14:57,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:14:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:14:57,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:57,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:57,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:14:57,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:02,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:02,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 04:15:02,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:02,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 04:15:02,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:02,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:15:02,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:02,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:15:02,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:02,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:02,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:02,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:02,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:02,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:02,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:15:02,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:02,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:02,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 04:15:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:02,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:02,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:02,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:02,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 04:15:02,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:02,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 04:15:02,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:02,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:15:02,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:02,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:15:02,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:02,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 04:15:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:02,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:02,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:02,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:02,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 04:15:02,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:02,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 04:15:02,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:02,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:15:02,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:02,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:15:02,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:02,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:15:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:02,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:02,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:02,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:02,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 04:15:02,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:02,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 04:15:02,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:02,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:15:02,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:02,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:15:02,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:02,830 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 75 proven. 175 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-27 04:15:02,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279243702] [2020-10-27 04:15:02,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:02,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 04:15:02,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713656095] [2020-10-27 04:15:02,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 04:15:02,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:02,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 04:15:02,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:15:02,835 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 15 states. [2020-10-27 04:15:03,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:03,233 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-10-27 04:15:03,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:15:03,235 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 74 [2020-10-27 04:15:03,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:03,236 INFO L225 Difference]: With dead ends: 81 [2020-10-27 04:15:03,236 INFO L226 Difference]: Without dead ends: 52 [2020-10-27 04:15:03,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:15:03,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-27 04:15:03,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-10-27 04:15:03,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-27 04:15:03,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-10-27 04:15:03,246 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 74 [2020-10-27 04:15:03,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:03,246 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-10-27 04:15:03,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 04:15:03,247 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-10-27 04:15:03,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 04:15:03,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:03,248 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:03,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:15:03,248 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:03,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:03,249 INFO L82 PathProgramCache]: Analyzing trace with hash -990384175, now seen corresponding path program 6 times [2020-10-27 04:15:03,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:03,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753096641] [2020-10-27 04:15:03,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:03,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:03,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:03,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:03,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:08,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:08,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 04:15:08,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:08,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 04:15:08,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:08,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:15:08,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:08,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:15:08,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:08,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:08,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:08,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:08,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:08,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:08,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:08,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:08,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:08,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:08,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:08,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:08,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 04:15:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:08,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:08,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:08,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:08,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:15:08,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:08,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 04:15:08,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:08,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:15:08,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:08,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:15:08,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:08,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 04:15:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:08,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:08,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:08,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:08,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:15:08,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:08,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 04:15:08,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:08,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:15:08,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:08,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:15:08,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:08,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 04:15:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:08,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:08,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:08,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:08,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:15:08,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:08,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 04:15:08,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:08,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:15:08,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:08,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:15:08,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:08,691 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 108 proven. 252 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-27 04:15:08,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753096641] [2020-10-27 04:15:08,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:08,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 04:15:08,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420723726] [2020-10-27 04:15:08,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 04:15:08,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:08,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 04:15:08,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-27 04:15:08,694 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 17 states. [2020-10-27 04:15:09,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:09,196 INFO L93 Difference]: Finished difference Result 87 states and 99 transitions. [2020-10-27 04:15:09,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 04:15:09,196 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 82 [2020-10-27 04:15:09,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:09,198 INFO L225 Difference]: With dead ends: 87 [2020-10-27 04:15:09,198 INFO L226 Difference]: Without dead ends: 56 [2020-10-27 04:15:09,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2020-10-27 04:15:09,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-27 04:15:09,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2020-10-27 04:15:09,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-27 04:15:09,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-10-27 04:15:09,214 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 82 [2020-10-27 04:15:09,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:09,214 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-10-27 04:15:09,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 04:15:09,215 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-10-27 04:15:09,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 04:15:09,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:09,219 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:09,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:15:09,220 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:09,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:09,225 INFO L82 PathProgramCache]: Analyzing trace with hash -852613999, now seen corresponding path program 7 times [2020-10-27 04:15:09,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:09,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381698739] [2020-10-27 04:15:09,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:09,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:09,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:09,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:09,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:14,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:14,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 04:15:14,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:14,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 04:15:14,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:14,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:15:14,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:14,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:15:14,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:14,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:14,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:14,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:14,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:14,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:14,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:15:14,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:14,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:14,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:14,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:14,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:14,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 04:15:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:14,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:14,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:14,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:14,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 04:15:14,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:14,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 04:15:14,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:14,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:15:14,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:14,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:15:14,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:14,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 04:15:14,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:14,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:14,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:14,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:14,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 04:15:14,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:14,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-27 04:15:14,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:14,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:15:14,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:14,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:15:14,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:14,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 04:15:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:14,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:14,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:14,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:14,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 04:15:14,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:14,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 04:15:14,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:14,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:15:14,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:14,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:15:14,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:14,814 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 147 proven. 343 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-27 04:15:14,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381698739] [2020-10-27 04:15:14,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:14,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 04:15:14,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766563616] [2020-10-27 04:15:14,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 04:15:14,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:14,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 04:15:14,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:15:14,817 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 19 states. [2020-10-27 04:15:15,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:15,403 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2020-10-27 04:15:15,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:15:15,404 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 90 [2020-10-27 04:15:15,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:15,405 INFO L225 Difference]: With dead ends: 93 [2020-10-27 04:15:15,406 INFO L226 Difference]: Without dead ends: 60 [2020-10-27 04:15:15,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2020-10-27 04:15:15,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-27 04:15:15,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-10-27 04:15:15,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-27 04:15:15,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-10-27 04:15:15,415 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 90 [2020-10-27 04:15:15,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:15,415 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-10-27 04:15:15,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 04:15:15,416 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-10-27 04:15:15,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 04:15:15,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:15,417 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:15,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:15:15,417 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:15,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:15,418 INFO L82 PathProgramCache]: Analyzing trace with hash -623507631, now seen corresponding path program 8 times [2020-10-27 04:15:15,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:15,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003416609] [2020-10-27 04:15:15,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:15,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:15,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:15,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:15,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:20,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:20,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 04:15:20,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:20,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 04:15:20,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:20,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:15:20,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:20,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:15:20,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:20,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:20,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:20,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:20,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:20,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:20,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:15:20,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:20,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:20,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:20,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:20,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:20,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 04:15:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:20,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:20,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:20,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:20,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:15:20,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:20,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 04:15:20,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:20,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:15:20,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:20,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:15:20,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:20,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 04:15:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:20,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:20,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:20,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:20,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:15:20,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:20,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 04:15:20,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:20,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:15:20,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:20,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:15:20,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:20,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 04:15:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:20,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:20,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:20,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:20,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 04:15:20,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:20,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 04:15:20,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:20,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:15:20,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:20,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:15:20,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:20,991 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 192 proven. 448 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-27 04:15:20,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003416609] [2020-10-27 04:15:20,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:20,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 04:15:20,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903301454] [2020-10-27 04:15:20,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 04:15:20,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:20,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 04:15:20,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:15:20,994 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 21 states. [2020-10-27 04:15:21,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:21,682 INFO L93 Difference]: Finished difference Result 99 states and 111 transitions. [2020-10-27 04:15:21,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 04:15:21,683 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 98 [2020-10-27 04:15:21,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:21,684 INFO L225 Difference]: With dead ends: 99 [2020-10-27 04:15:21,684 INFO L226 Difference]: Without dead ends: 64 [2020-10-27 04:15:21,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2020-10-27 04:15:21,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-27 04:15:21,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2020-10-27 04:15:21,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-27 04:15:21,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-10-27 04:15:21,699 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 98 [2020-10-27 04:15:21,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:21,699 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-10-27 04:15:21,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 04:15:21,700 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-10-27 04:15:21,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 04:15:21,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:21,701 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:21,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:15:21,701 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:21,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:21,702 INFO L82 PathProgramCache]: Analyzing trace with hash -956917743, now seen corresponding path program 9 times [2020-10-27 04:15:21,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:21,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558934514] [2020-10-27 04:15:21,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:21,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:21,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:21,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:21,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:26,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:26,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 04:15:26,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:26,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 04:15:26,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:26,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:15:26,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:26,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:15:26,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:26,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:26,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:26,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:26,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:26,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:26,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:26,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:26,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:26,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:26,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:26,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:26,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 04:15:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:26,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:26,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:26,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:26,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 04:15:26,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:26,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 04:15:26,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:26,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:15:26,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:26,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:15:26,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:27,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 04:15:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:27,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:27,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:27,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:27,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 04:15:27,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:27,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 04:15:27,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:27,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:15:27,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:27,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:15:27,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:27,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:15:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:27,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:27,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:27,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:27,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 04:15:27,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:27,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 04:15:27,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:27,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:15:27,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:27,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 04:15:27,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:27,348 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 243 proven. 567 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 04:15:27,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558934514] [2020-10-27 04:15:27,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:27,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 04:15:27,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267636626] [2020-10-27 04:15:27,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 04:15:27,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:27,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 04:15:27,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:15:27,351 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 23 states. [2020-10-27 04:15:28,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:28,065 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2020-10-27 04:15:28,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 04:15:28,065 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 106 [2020-10-27 04:15:28,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:28,067 INFO L225 Difference]: With dead ends: 105 [2020-10-27 04:15:28,067 INFO L226 Difference]: Without dead ends: 68 [2020-10-27 04:15:28,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 04:15:28,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-27 04:15:28,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2020-10-27 04:15:28,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-27 04:15:28,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-10-27 04:15:28,078 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 106 [2020-10-27 04:15:28,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:28,078 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-10-27 04:15:28,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 04:15:28,078 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-10-27 04:15:28,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-27 04:15:28,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:28,079 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:28,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:15:28,080 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:28,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:28,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1984506159, now seen corresponding path program 10 times [2020-10-27 04:15:28,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:28,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151857827] [2020-10-27 04:15:28,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:28,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:28,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:28,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:28,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:33,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:33,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 04:15:33,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:33,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 04:15:33,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:33,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:15:33,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:33,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:15:33,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:33,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:33,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:33,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:33,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:33,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:33,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:15:33,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:33,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:33,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:33,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:33,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:15:33,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 04:15:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:33,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:33,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:33,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:33,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:33,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:33,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-27 04:15:33,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:33,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:15:33,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:33,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:15:33,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:33,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:15:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:33,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:33,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:33,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:33,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:33,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:33,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-27 04:15:33,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:33,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:15:33,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:33,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:15:33,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:33,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 04:15:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:33,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:33,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:34,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:34,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:15:34,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:34,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-27 04:15:34,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:34,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:15:34,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:34,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:15:34,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:34,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 300 proven. 700 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-27 04:15:34,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151857827] [2020-10-27 04:15:34,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:34,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 04:15:34,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030319814] [2020-10-27 04:15:34,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 04:15:34,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:34,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 04:15:34,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2020-10-27 04:15:34,070 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 25 states. [2020-10-27 04:15:34,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:34,778 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2020-10-27 04:15:34,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 04:15:34,778 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 114 [2020-10-27 04:15:34,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:34,780 INFO L225 Difference]: With dead ends: 111 [2020-10-27 04:15:34,780 INFO L226 Difference]: Without dead ends: 72 [2020-10-27 04:15:34,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 04:15:34,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-27 04:15:34,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-10-27 04:15:34,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-27 04:15:34,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-10-27 04:15:34,791 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 114 [2020-10-27 04:15:34,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:34,791 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-10-27 04:15:34,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 04:15:34,791 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-10-27 04:15:34,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 04:15:34,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:34,793 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:34,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:15:34,793 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:34,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:34,794 INFO L82 PathProgramCache]: Analyzing trace with hash 710787985, now seen corresponding path program 11 times [2020-10-27 04:15:34,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:34,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30394356] [2020-10-27 04:15:34,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:34,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:34,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:34,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:34,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:39,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:39,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 04:15:39,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:39,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 04:15:39,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:39,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:15:39,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:39,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 04:15:39,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:39,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:40,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:40,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:40,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:40,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:40,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:40,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:40,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:40,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:40,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:40,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:40,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 04:15:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:40,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:40,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:40,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:40,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 04:15:40,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:40,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-27 04:15:40,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:40,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:15:40,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:40,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 04:15:40,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:40,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:15:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:40,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:40,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:40,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:40,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 04:15:40,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:40,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-27 04:15:40,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:40,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:15:40,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:40,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 04:15:40,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:40,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 04:15:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:40,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:40,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:40,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:40,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 04:15:40,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:40,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-27 04:15:40,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:40,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:15:40,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:40,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 04:15:40,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:41,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 363 proven. 847 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-27 04:15:41,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30394356] [2020-10-27 04:15:41,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:41,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 04:15:41,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054012595] [2020-10-27 04:15:41,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 04:15:41,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:41,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 04:15:41,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2020-10-27 04:15:41,011 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 27 states. [2020-10-27 04:15:41,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:41,882 INFO L93 Difference]: Finished difference Result 117 states and 129 transitions. [2020-10-27 04:15:41,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 04:15:41,883 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 122 [2020-10-27 04:15:41,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:41,886 INFO L225 Difference]: With dead ends: 117 [2020-10-27 04:15:41,887 INFO L226 Difference]: Without dead ends: 76 [2020-10-27 04:15:41,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=363, Invalid=1119, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 04:15:41,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-27 04:15:41,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-10-27 04:15:41,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-27 04:15:41,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2020-10-27 04:15:41,910 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 122 [2020-10-27 04:15:41,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:41,910 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2020-10-27 04:15:41,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 04:15:41,910 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2020-10-27 04:15:41,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-27 04:15:41,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:41,912 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:41,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:15:41,912 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:41,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:41,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1353556399, now seen corresponding path program 12 times [2020-10-27 04:15:41,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:41,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063765930] [2020-10-27 04:15:41,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:41,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:41,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:42,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:42,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:46,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:46,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 04:15:46,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:46,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 04:15:46,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:46,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:15:46,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:46,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:15:46,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:47,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:47,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:47,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:47,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:47,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:47,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:47,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:47,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:47,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:47,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:47,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:47,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:47,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 04:15:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:47,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:47,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:47,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:47,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 04:15:47,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:47,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-27 04:15:47,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:47,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:15:47,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:47,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:15:47,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:47,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:15:47,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:47,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:47,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:47,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:47,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 04:15:47,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:47,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-27 04:15:47,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:47,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:15:47,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:47,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:15:47,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:47,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 04:15:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:47,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:47,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:47,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:47,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 04:15:47,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:47,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 04:15:47,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:47,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:15:47,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:47,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:15:47,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:47,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1527 backedges. 432 proven. 1008 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-27 04:15:47,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063765930] [2020-10-27 04:15:47,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:47,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 04:15:47,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126951119] [2020-10-27 04:15:47,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 04:15:47,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:47,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 04:15:47,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=601, Unknown=0, NotChecked=0, Total=812 [2020-10-27 04:15:47,827 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 29 states. [2020-10-27 04:15:48,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:48,863 INFO L93 Difference]: Finished difference Result 123 states and 135 transitions. [2020-10-27 04:15:48,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 04:15:48,863 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 130 [2020-10-27 04:15:48,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:48,865 INFO L225 Difference]: With dead ends: 123 [2020-10-27 04:15:48,865 INFO L226 Difference]: Without dead ends: 80 [2020-10-27 04:15:48,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=419, Invalid=1303, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 04:15:48,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-27 04:15:48,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2020-10-27 04:15:48,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-27 04:15:48,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2020-10-27 04:15:48,873 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 130 [2020-10-27 04:15:48,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:48,873 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2020-10-27 04:15:48,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-27 04:15:48,873 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2020-10-27 04:15:48,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-27 04:15:48,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:48,875 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:48,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 04:15:48,875 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:48,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:48,875 INFO L82 PathProgramCache]: Analyzing trace with hash 236693265, now seen corresponding path program 13 times [2020-10-27 04:15:48,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:48,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837961904] [2020-10-27 04:15:48,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:48,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:48,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:48,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:48,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:53,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:53,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-27 04:15:53,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:15:53,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-27 04:15:53,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:53,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:15:53,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:15:53,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 04:15:53,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:54,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:15:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:54,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:54,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:54,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:15:54,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:15:54,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:15:54,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:54,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:15:54,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:15:54,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:15:54,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:54,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 04:15:54,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:54,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:54,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:54,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:54,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 04:15:54,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:54,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 04:15:54,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:54,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:15:54,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:54,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 04:15:54,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:54,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:15:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:54,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:54,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:54,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:54,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 04:15:54,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:54,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-27 04:15:54,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:54,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:15:54,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:54,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 04:15:54,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:54,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-27 04:15:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:54,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:54,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:54,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:15:54,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 04:15:54,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:15:54,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-27 04:15:54,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:15:54,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:15:54,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:15:54,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 04:15:54,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:15:54,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1783 backedges. 507 proven. 1183 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-27 04:15:54,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837961904] [2020-10-27 04:15:54,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:15:54,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-27 04:15:54,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235136603] [2020-10-27 04:15:54,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-27 04:15:54,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:15:54,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-27 04:15:54,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=689, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:15:54,923 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand 31 states. [2020-10-27 04:15:55,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:15:55,994 INFO L93 Difference]: Finished difference Result 129 states and 141 transitions. [2020-10-27 04:15:55,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 04:15:55,995 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 138 [2020-10-27 04:15:55,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:15:55,996 INFO L225 Difference]: With dead ends: 129 [2020-10-27 04:15:55,997 INFO L226 Difference]: Without dead ends: 84 [2020-10-27 04:15:55,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=479, Invalid=1501, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 04:15:55,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-27 04:15:56,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2020-10-27 04:15:56,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-27 04:15:56,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2020-10-27 04:15:56,006 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 138 [2020-10-27 04:15:56,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:15:56,006 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2020-10-27 04:15:56,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-27 04:15:56,006 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2020-10-27 04:15:56,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-27 04:15:56,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:15:56,008 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:15:56,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 04:15:56,009 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:15:56,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:15:56,009 INFO L82 PathProgramCache]: Analyzing trace with hash 459316689, now seen corresponding path program 14 times [2020-10-27 04:15:56,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:15:56,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790404234] [2020-10-27 04:15:56,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:15:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:15:56,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:56,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:56,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:15:56,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:01,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:01,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 04:16:01,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:16:01,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 04:16:01,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:01,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:16:01,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:16:01,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:16:01,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:01,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:01,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:01,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:01,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:01,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:01,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:16:01,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:01,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:01,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:01,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:01,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:01,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 04:16:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:01,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:01,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:01,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:01,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 04:16:01,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:01,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-27 04:16:01,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:01,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:16:01,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:01,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:16:01,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:01,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:16:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:01,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:01,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:01,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:01,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 04:16:01,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:01,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-27 04:16:01,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:01,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:16:01,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:01,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:16:01,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:01,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-27 04:16:01,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:01,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:01,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:02,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:02,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 04:16:02,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:02,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-27 04:16:02,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:02,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:16:02,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:02,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:16:02,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:02,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 588 proven. 1372 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-27 04:16:02,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790404234] [2020-10-27 04:16:02,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:16:02,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-27 04:16:02,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391178149] [2020-10-27 04:16:02,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-27 04:16:02,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:02,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-27 04:16:02,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 04:16:02,112 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand 33 states. [2020-10-27 04:16:03,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:03,216 INFO L93 Difference]: Finished difference Result 135 states and 147 transitions. [2020-10-27 04:16:03,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 04:16:03,218 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 146 [2020-10-27 04:16:03,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:03,219 INFO L225 Difference]: With dead ends: 135 [2020-10-27 04:16:03,219 INFO L226 Difference]: Without dead ends: 88 [2020-10-27 04:16:03,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=543, Invalid=1713, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 04:16:03,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-27 04:16:03,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-10-27 04:16:03,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-27 04:16:03,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2020-10-27 04:16:03,228 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 146 [2020-10-27 04:16:03,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:03,228 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2020-10-27 04:16:03,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-27 04:16:03,228 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2020-10-27 04:16:03,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-27 04:16:03,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:03,230 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:16:03,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 04:16:03,230 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:03,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:03,231 INFO L82 PathProgramCache]: Analyzing trace with hash 2062041745, now seen corresponding path program 15 times [2020-10-27 04:16:03,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:03,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155082067] [2020-10-27 04:16:03,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:03,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:03,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:03,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:03,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:03,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:08,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:08,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-27 04:16:08,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:16:08,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-27 04:16:08,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:08,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:16:08,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:16:08,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 04:16:08,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:08,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:08,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:08,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:08,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:08,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:08,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:16:08,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:08,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:08,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:08,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:08,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:08,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 04:16:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:08,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:08,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:08,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:08,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 04:16:08,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:08,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-27 04:16:08,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:08,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:16:08,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:08,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 04:16:08,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:09,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:16:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:09,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:09,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:09,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:09,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 04:16:09,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:09,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-27 04:16:09,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:09,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:16:09,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:09,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 04:16:09,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:09,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-27 04:16:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:09,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:09,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:09,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:09,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 04:16:09,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:09,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-27 04:16:09,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:09,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:16:09,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:09,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 04:16:09,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:09,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2355 backedges. 675 proven. 1575 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-27 04:16:09,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155082067] [2020-10-27 04:16:09,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:16:09,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-27 04:16:09,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417444263] [2020-10-27 04:16:09,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-27 04:16:09,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:09,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-27 04:16:09,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=883, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 04:16:09,591 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 35 states. [2020-10-27 04:16:10,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:10,864 INFO L93 Difference]: Finished difference Result 141 states and 153 transitions. [2020-10-27 04:16:10,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 04:16:10,864 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 154 [2020-10-27 04:16:10,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:10,865 INFO L225 Difference]: With dead ends: 141 [2020-10-27 04:16:10,866 INFO L226 Difference]: Without dead ends: 92 [2020-10-27 04:16:10,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=611, Invalid=1939, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 04:16:10,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-27 04:16:10,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2020-10-27 04:16:10,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-27 04:16:10,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 94 transitions. [2020-10-27 04:16:10,883 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 94 transitions. Word has length 154 [2020-10-27 04:16:10,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:10,884 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 94 transitions. [2020-10-27 04:16:10,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-27 04:16:10,884 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 94 transitions. [2020-10-27 04:16:10,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-27 04:16:10,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:10,886 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 16, 16, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:16:10,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 04:16:10,886 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:10,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:10,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1885760175, now seen corresponding path program 16 times [2020-10-27 04:16:10,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:10,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141727104] [2020-10-27 04:16:10,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:10,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:10,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:10,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:11,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:15,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:15,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 04:16:15,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:16:15,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 04:16:15,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:15,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:16:15,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:16:15,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 04:16:15,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:16,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:16,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:16,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:16,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:16,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:16,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:16:16,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:16,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:16,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:16,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:16,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:16,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:16:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:16,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:16,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:16,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:16,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 04:16:16,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:16,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-27 04:16:16,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:16,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:16:16,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:16,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 04:16:16,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:16,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 04:16:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:16,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:16,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:17,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:17,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 04:16:17,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:17,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-27 04:16:17,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:17,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:16:17,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:17,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 04:16:17,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:17,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 04:16:17,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:17,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:17,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:17,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:17,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 04:16:17,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:17,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-27 04:16:17,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:17,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:16:17,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:17,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 04:16:17,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:17,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2671 backedges. 768 proven. 1792 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-27 04:16:17,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141727104] [2020-10-27 04:16:17,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:16:17,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-27 04:16:17,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86580608] [2020-10-27 04:16:17,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-27 04:16:17,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:17,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-27 04:16:17,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=989, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 04:16:17,283 INFO L87 Difference]: Start difference. First operand 90 states and 94 transitions. Second operand 37 states. [2020-10-27 04:16:18,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:18,508 INFO L93 Difference]: Finished difference Result 147 states and 159 transitions. [2020-10-27 04:16:18,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-27 04:16:18,509 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 162 [2020-10-27 04:16:18,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:18,511 INFO L225 Difference]: With dead ends: 147 [2020-10-27 04:16:18,511 INFO L226 Difference]: Without dead ends: 96 [2020-10-27 04:16:18,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=683, Invalid=2179, Unknown=0, NotChecked=0, Total=2862 [2020-10-27 04:16:18,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-27 04:16:18,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2020-10-27 04:16:18,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-27 04:16:18,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2020-10-27 04:16:18,521 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 162 [2020-10-27 04:16:18,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:18,521 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 98 transitions. [2020-10-27 04:16:18,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-27 04:16:18,521 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions. [2020-10-27 04:16:18,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-27 04:16:18,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:18,524 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 17, 17, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:16:18,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 04:16:18,524 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:18,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:18,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1803261457, now seen corresponding path program 17 times [2020-10-27 04:16:18,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:18,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334761724] [2020-10-27 04:16:18,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:18,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:18,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:18,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:18,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:23,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:23,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-27 04:16:23,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:16:23,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-27 04:16:23,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:23,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:16:23,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:16:23,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 04:16:23,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:23,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:23,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:23,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:23,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:23,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:23,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:16:23,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:23,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:23,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:23,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:23,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:23,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 04:16:23,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:23,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:23,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:24,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:24,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 04:16:24,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:24,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-27 04:16:24,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:24,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:16:24,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:24,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 04:16:24,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:24,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 04:16:24,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:24,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:24,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:24,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:24,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 04:16:24,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:24,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-27 04:16:24,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:24,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:16:24,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:24,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 04:16:24,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:24,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-27 04:16:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:24,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:24,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:24,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:24,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 04:16:24,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:24,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-27 04:16:24,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:24,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:16:24,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:24,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 04:16:24,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:24,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3007 backedges. 867 proven. 2023 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-27 04:16:24,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334761724] [2020-10-27 04:16:24,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:16:24,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-27 04:16:24,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084060883] [2020-10-27 04:16:24,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-27 04:16:24,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:24,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-27 04:16:24,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1101, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 04:16:24,957 INFO L87 Difference]: Start difference. First operand 94 states and 98 transitions. Second operand 39 states. [2020-10-27 04:16:26,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:26,417 INFO L93 Difference]: Finished difference Result 153 states and 165 transitions. [2020-10-27 04:16:26,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-27 04:16:26,418 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 170 [2020-10-27 04:16:26,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:26,420 INFO L225 Difference]: With dead ends: 153 [2020-10-27 04:16:26,420 INFO L226 Difference]: Without dead ends: 100 [2020-10-27 04:16:26,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=759, Invalid=2433, Unknown=0, NotChecked=0, Total=3192 [2020-10-27 04:16:26,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-27 04:16:26,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2020-10-27 04:16:26,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-27 04:16:26,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 102 transitions. [2020-10-27 04:16:26,429 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 102 transitions. Word has length 170 [2020-10-27 04:16:26,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:26,430 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 102 transitions. [2020-10-27 04:16:26,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-27 04:16:26,430 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 102 transitions. [2020-10-27 04:16:26,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-27 04:16:26,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:26,433 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:16:26,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 04:16:26,433 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:26,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:26,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1078639407, now seen corresponding path program 18 times [2020-10-27 04:16:26,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:26,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275554362] [2020-10-27 04:16:26,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:26,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:26,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:26,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:26,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:31,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:31,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-27 04:16:31,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:16:31,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 04:16:31,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:31,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:16:31,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:16:31,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:16:31,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:31,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:31,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:31,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:31,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:31,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:31,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:16:31,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:31,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:31,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:31,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:31,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:31,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 04:16:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:31,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:31,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:32,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:32,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 04:16:32,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:32,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-27 04:16:32,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:32,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:16:32,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:32,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:16:32,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:32,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 04:16:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:32,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:32,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:32,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:32,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 04:16:32,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:32,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-27 04:16:32,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:32,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:16:32,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:32,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:16:32,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:32,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-27 04:16:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:32,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:32,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:33,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:33,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 04:16:33,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:33,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-27 04:16:33,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:33,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:16:33,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:33,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:16:33,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:33,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3363 backedges. 972 proven. 2268 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-27 04:16:33,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275554362] [2020-10-27 04:16:33,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:16:33,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-27 04:16:33,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708158759] [2020-10-27 04:16:33,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-27 04:16:33,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:33,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-27 04:16:33,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=1219, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 04:16:33,166 INFO L87 Difference]: Start difference. First operand 98 states and 102 transitions. Second operand 41 states. [2020-10-27 04:16:34,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:34,764 INFO L93 Difference]: Finished difference Result 159 states and 171 transitions. [2020-10-27 04:16:34,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-27 04:16:34,764 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 178 [2020-10-27 04:16:34,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:34,766 INFO L225 Difference]: With dead ends: 159 [2020-10-27 04:16:34,766 INFO L226 Difference]: Without dead ends: 104 [2020-10-27 04:16:34,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=839, Invalid=2701, Unknown=0, NotChecked=0, Total=3540 [2020-10-27 04:16:34,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-27 04:16:34,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2020-10-27 04:16:34,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-27 04:16:34,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2020-10-27 04:16:34,776 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 178 [2020-10-27 04:16:34,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:34,777 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2020-10-27 04:16:34,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-27 04:16:34,777 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2020-10-27 04:16:34,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-27 04:16:34,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:34,778 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 19, 19, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:16:34,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 04:16:34,779 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:34,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:34,779 INFO L82 PathProgramCache]: Analyzing trace with hash -863133295, now seen corresponding path program 19 times [2020-10-27 04:16:34,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:34,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422429172] [2020-10-27 04:16:34,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:34,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:34,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:34,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:34,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:39,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:39,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-27 04:16:39,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:16:39,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 04:16:39,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:39,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:16:39,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:16:39,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 04:16:39,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:40,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:40,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:40,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:40,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:40,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:40,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:16:40,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:40,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:40,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:40,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:40,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:40,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 04:16:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:40,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:40,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:40,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:40,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:16:40,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:40,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-27 04:16:40,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:40,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:16:40,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:40,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 04:16:40,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:41,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 04:16:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:41,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:41,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:41,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:41,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:16:41,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:41,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-27 04:16:41,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:41,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:16:41,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:41,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 04:16:41,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:41,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-27 04:16:41,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:41,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:41,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:41,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:41,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:16:41,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:41,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-27 04:16:41,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:41,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:16:41,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:41,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 04:16:41,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:41,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3739 backedges. 1083 proven. 2527 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-27 04:16:41,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422429172] [2020-10-27 04:16:41,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:16:41,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-27 04:16:41,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682070028] [2020-10-27 04:16:41,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-27 04:16:41,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:41,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-27 04:16:41,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1343, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 04:16:41,776 INFO L87 Difference]: Start difference. First operand 102 states and 106 transitions. Second operand 43 states. [2020-10-27 04:16:43,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:43,500 INFO L93 Difference]: Finished difference Result 165 states and 177 transitions. [2020-10-27 04:16:43,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-27 04:16:43,501 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 186 [2020-10-27 04:16:43,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:43,502 INFO L225 Difference]: With dead ends: 165 [2020-10-27 04:16:43,502 INFO L226 Difference]: Without dead ends: 108 [2020-10-27 04:16:43,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=923, Invalid=2983, Unknown=0, NotChecked=0, Total=3906 [2020-10-27 04:16:43,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-27 04:16:43,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2020-10-27 04:16:43,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-27 04:16:43,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2020-10-27 04:16:43,513 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 186 [2020-10-27 04:16:43,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:43,513 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2020-10-27 04:16:43,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-27 04:16:43,513 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2020-10-27 04:16:43,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-27 04:16:43,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:43,515 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 20, 20, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:16:43,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 04:16:43,515 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:43,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:43,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1366010961, now seen corresponding path program 20 times [2020-10-27 04:16:43,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:43,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230113707] [2020-10-27 04:16:43,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:43,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:43,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:43,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:43,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:48,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:48,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-27 04:16:48,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:16:48,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 04:16:48,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:48,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 04:16:48,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:16:48,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 04:16:48,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:48,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:49,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:49,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:49,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:49,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:49,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:16:49,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:49,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:49,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:49,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:49,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:49,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:16:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:49,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:49,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:49,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:49,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:16:49,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:49,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-27 04:16:49,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:49,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 04:16:49,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:49,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 04:16:49,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:50,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 04:16:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:50,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:50,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:50,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:50,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:16:50,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:50,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-27 04:16:50,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:50,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 04:16:50,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:50,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 04:16:50,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:50,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 04:16:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:50,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:50,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:50,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:50,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:16:50,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:50,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-27 04:16:50,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:50,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 04:16:50,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:50,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 04:16:50,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:50,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4135 backedges. 1200 proven. 2800 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-27 04:16:50,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230113707] [2020-10-27 04:16:50,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:16:50,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-27 04:16:50,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292960177] [2020-10-27 04:16:50,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-27 04:16:50,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:50,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-27 04:16:50,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=507, Invalid=1473, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 04:16:50,557 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand 45 states. [2020-10-27 04:16:52,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:52,501 INFO L93 Difference]: Finished difference Result 171 states and 183 transitions. [2020-10-27 04:16:52,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-27 04:16:52,505 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 194 [2020-10-27 04:16:52,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:52,506 INFO L225 Difference]: With dead ends: 171 [2020-10-27 04:16:52,506 INFO L226 Difference]: Without dead ends: 112 [2020-10-27 04:16:52,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1011, Invalid=3279, Unknown=0, NotChecked=0, Total=4290 [2020-10-27 04:16:52,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-27 04:16:52,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2020-10-27 04:16:52,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-27 04:16:52,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 114 transitions. [2020-10-27 04:16:52,522 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 114 transitions. Word has length 194 [2020-10-27 04:16:52,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:52,522 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 114 transitions. [2020-10-27 04:16:52,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-27 04:16:52,522 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 114 transitions. [2020-10-27 04:16:52,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-27 04:16:52,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:52,524 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:16:52,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 04:16:52,524 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:52,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:52,525 INFO L82 PathProgramCache]: Analyzing trace with hash 2094425361, now seen corresponding path program 21 times [2020-10-27 04:16:52,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:52,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317347261] [2020-10-27 04:16:52,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:52,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:52,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:52,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:52,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:57,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:57,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 04:16:57,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:16:57,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5132 [2020-10-27 04:16:57,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:57,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:16:57,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:16:57,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 04:16:57,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:58,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:58,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:58,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:58,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:58,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:58,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:16:58,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:58,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:58,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:58,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:58,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:58,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 04:16:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:58,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:58,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:58,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:58,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 04:16:58,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:58,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-27 04:16:58,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:58,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:16:58,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:58,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 04:16:58,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:59,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-27 04:16:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:59,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:59,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:59,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:59,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 04:16:59,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:16:59,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-27 04:16:59,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:59,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:16:59,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:16:59,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 04:16:59,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:59,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-27 04:16:59,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:59,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:59,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:00,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:00,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 04:17:00,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:00,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 522 [2020-10-27 04:17:00,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:00,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:17:00,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:00,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 04:17:00,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:00,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4551 backedges. 1323 proven. 3087 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-27 04:17:00,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317347261] [2020-10-27 04:17:00,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:17:00,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-10-27 04:17:00,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963025016] [2020-10-27 04:17:00,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-27 04:17:00,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:17:00,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-27 04:17:00,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=553, Invalid=1609, Unknown=0, NotChecked=0, Total=2162 [2020-10-27 04:17:00,198 INFO L87 Difference]: Start difference. First operand 110 states and 114 transitions. Second operand 47 states. [2020-10-27 04:17:02,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:17:02,140 INFO L93 Difference]: Finished difference Result 177 states and 189 transitions. [2020-10-27 04:17:02,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-27 04:17:02,142 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 202 [2020-10-27 04:17:02,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:17:02,144 INFO L225 Difference]: With dead ends: 177 [2020-10-27 04:17:02,144 INFO L226 Difference]: Without dead ends: 116 [2020-10-27 04:17:02,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1103, Invalid=3589, Unknown=0, NotChecked=0, Total=4692 [2020-10-27 04:17:02,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-27 04:17:02,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2020-10-27 04:17:02,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-27 04:17:02,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 118 transitions. [2020-10-27 04:17:02,154 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 118 transitions. Word has length 202 [2020-10-27 04:17:02,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:17:02,154 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 118 transitions. [2020-10-27 04:17:02,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-27 04:17:02,155 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 118 transitions. [2020-10-27 04:17:02,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-27 04:17:02,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:17:02,156 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 22, 22, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:17:02,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 04:17:02,157 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:17:02,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:17:02,157 INFO L82 PathProgramCache]: Analyzing trace with hash -596325423, now seen corresponding path program 22 times [2020-10-27 04:17:02,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:17:02,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354226339] [2020-10-27 04:17:02,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:17:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:02,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:02,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:02,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:02,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:07,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:07,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 04:17:07,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:17:07,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-27 04:17:07,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:07,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 04:17:07,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:17:07,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:17:07,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:07,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:07,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:07,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:07,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:07,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:07,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:17:07,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:07,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:07,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:07,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:07,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:07,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:17:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:07,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:07,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:08,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:08,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 04:17:08,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:08,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-27 04:17:08,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:08,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 04:17:08,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:08,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:17:08,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:09,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 04:17:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:09,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:09,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:09,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:09,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 04:17:09,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:09,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-27 04:17:09,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:09,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 04:17:09,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:09,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:17:09,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:09,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-27 04:17:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:09,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:09,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:09,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:09,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 04:17:09,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:09,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-27 04:17:09,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:09,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 04:17:09,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:09,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:17:09,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:09,734 INFO L134 CoverageAnalysis]: Checked inductivity of 4987 backedges. 1452 proven. 3388 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-27 04:17:09,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354226339] [2020-10-27 04:17:09,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:17:09,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-10-27 04:17:09,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438032042] [2020-10-27 04:17:09,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-27 04:17:09,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:17:09,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-27 04:17:09,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=601, Invalid=1751, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 04:17:09,736 INFO L87 Difference]: Start difference. First operand 114 states and 118 transitions. Second operand 49 states. [2020-10-27 04:17:11,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:17:11,848 INFO L93 Difference]: Finished difference Result 183 states and 195 transitions. [2020-10-27 04:17:11,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-27 04:17:11,849 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 210 [2020-10-27 04:17:11,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:17:11,850 INFO L225 Difference]: With dead ends: 183 [2020-10-27 04:17:11,850 INFO L226 Difference]: Without dead ends: 120 [2020-10-27 04:17:11,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1199, Invalid=3913, Unknown=0, NotChecked=0, Total=5112 [2020-10-27 04:17:11,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-27 04:17:11,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2020-10-27 04:17:11,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-27 04:17:11,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 122 transitions. [2020-10-27 04:17:11,861 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 122 transitions. Word has length 210 [2020-10-27 04:17:11,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:17:11,862 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 122 transitions. [2020-10-27 04:17:11,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-27 04:17:11,862 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 122 transitions. [2020-10-27 04:17:11,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-27 04:17:11,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:17:11,864 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 23, 23, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:17:11,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 04:17:11,864 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:17:11,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:17:11,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1292755089, now seen corresponding path program 23 times [2020-10-27 04:17:11,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:17:11,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899057077] [2020-10-27 04:17:11,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:17:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:11,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:11,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:12,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:12,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:16,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:16,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-27 04:17:16,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:17:16,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-27 04:17:16,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:16,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:17:16,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:17:16,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 04:17:16,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:17,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:17,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:17,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:17,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:17,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:17,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:17:17,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:17,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:17,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:17,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:17,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:17,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:17:17,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:17,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:17,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:17,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:17,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 04:17:17,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:17,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-10-27 04:17:17,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:17,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:17:17,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:17,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 04:17:17,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:18,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 04:17:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:18,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:18,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:19,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:19,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 04:17:19,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:19,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-10-27 04:17:19,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:19,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:17:19,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:19,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 04:17:19,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:19,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-27 04:17:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:19,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:19,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:19,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:19,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 04:17:19,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:19,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-10-27 04:17:19,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:19,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:17:19,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:19,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 04:17:19,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:19,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5443 backedges. 1587 proven. 3703 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-27 04:17:19,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899057077] [2020-10-27 04:17:19,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:17:19,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-10-27 04:17:19,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769495002] [2020-10-27 04:17:19,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-10-27 04:17:19,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:17:19,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-10-27 04:17:19,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=651, Invalid=1899, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 04:17:19,744 INFO L87 Difference]: Start difference. First operand 118 states and 122 transitions. Second operand 51 states. [2020-10-27 04:17:22,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:17:22,200 INFO L93 Difference]: Finished difference Result 189 states and 201 transitions. [2020-10-27 04:17:22,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-27 04:17:22,201 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 218 [2020-10-27 04:17:22,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:17:22,202 INFO L225 Difference]: With dead ends: 189 [2020-10-27 04:17:22,203 INFO L226 Difference]: Without dead ends: 124 [2020-10-27 04:17:22,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 851 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1299, Invalid=4251, Unknown=0, NotChecked=0, Total=5550 [2020-10-27 04:17:22,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-27 04:17:22,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2020-10-27 04:17:22,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-27 04:17:22,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 126 transitions. [2020-10-27 04:17:22,213 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 126 transitions. Word has length 218 [2020-10-27 04:17:22,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:17:22,213 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 126 transitions. [2020-10-27 04:17:22,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-10-27 04:17:22,213 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 126 transitions. [2020-10-27 04:17:22,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-27 04:17:22,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:17:22,215 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:17:22,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 04:17:22,216 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:17:22,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:17:22,216 INFO L82 PathProgramCache]: Analyzing trace with hash -360144047, now seen corresponding path program 24 times [2020-10-27 04:17:22,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:17:22,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596814355] [2020-10-27 04:17:22,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:17:22,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:22,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:22,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:22,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:22,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:27,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:27,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 04:17:27,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:17:27,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 04:17:27,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:27,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 04:17:27,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:17:27,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:17:27,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:27,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:27,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:27,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:27,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:27,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:27,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:17:27,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:27,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:27,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:27,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:27,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:27,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:17:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:27,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:27,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:28,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:28,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 04:17:28,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:28,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-27 04:17:28,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:28,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 04:17:28,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:28,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:17:28,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:29,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-27 04:17:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:29,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:29,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:29,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:29,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 04:17:29,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:29,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-10-27 04:17:29,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:29,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 04:17:29,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:29,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:17:29,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:29,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-27 04:17:29,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:29,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:29,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:30,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:30,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 04:17:30,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:30,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-27 04:17:30,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:30,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 04:17:30,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:30,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:17:30,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:30,063 INFO L134 CoverageAnalysis]: Checked inductivity of 5919 backedges. 1728 proven. 4032 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-27 04:17:30,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596814355] [2020-10-27 04:17:30,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:17:30,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-10-27 04:17:30,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980514582] [2020-10-27 04:17:30,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-10-27 04:17:30,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:17:30,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-10-27 04:17:30,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=2053, Unknown=0, NotChecked=0, Total=2756 [2020-10-27 04:17:30,066 INFO L87 Difference]: Start difference. First operand 122 states and 126 transitions. Second operand 53 states. [2020-10-27 04:17:32,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:17:32,320 INFO L93 Difference]: Finished difference Result 195 states and 207 transitions. [2020-10-27 04:17:32,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-27 04:17:32,321 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 226 [2020-10-27 04:17:32,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:17:32,322 INFO L225 Difference]: With dead ends: 195 [2020-10-27 04:17:32,322 INFO L226 Difference]: Without dead ends: 128 [2020-10-27 04:17:32,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1403, Invalid=4603, Unknown=0, NotChecked=0, Total=6006 [2020-10-27 04:17:32,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-27 04:17:32,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2020-10-27 04:17:32,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-27 04:17:32,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 130 transitions. [2020-10-27 04:17:32,341 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 130 transitions. Word has length 226 [2020-10-27 04:17:32,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:17:32,341 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 130 transitions. [2020-10-27 04:17:32,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-10-27 04:17:32,342 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 130 transitions. [2020-10-27 04:17:32,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-27 04:17:32,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:17:32,343 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 25, 25, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:17:32,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 04:17:32,344 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:17:32,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:17:32,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1305583, now seen corresponding path program 25 times [2020-10-27 04:17:32,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:17:32,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278336461] [2020-10-27 04:17:32,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:17:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:32,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:32,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:32,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:32,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:37,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:37,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 04:17:37,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:17:37,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5229 [2020-10-27 04:17:37,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:37,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 04:17:37,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:17:37,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 04:17:37,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:38,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:38,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:38,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:38,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:38,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:38,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:17:38,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:38,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:38,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:38,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:38,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:38,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 04:17:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:38,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:38,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:38,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:38,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 04:17:38,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:38,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-27 04:17:38,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:38,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 04:17:38,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:38,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 04:17:38,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:39,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-27 04:17:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:39,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:39,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:40,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:40,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 04:17:40,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:40,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-27 04:17:40,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:40,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 04:17:40,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:40,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 04:17:40,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:40,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-27 04:17:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:40,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:40,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:40,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:40,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 04:17:40,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:40,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-27 04:17:40,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:40,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 04:17:40,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:40,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 04:17:40,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:40,358 INFO L134 CoverageAnalysis]: Checked inductivity of 6415 backedges. 1875 proven. 4375 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-27 04:17:40,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278336461] [2020-10-27 04:17:40,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:17:40,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-10-27 04:17:40,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469804737] [2020-10-27 04:17:40,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-10-27 04:17:40,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:17:40,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-10-27 04:17:40,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=757, Invalid=2213, Unknown=0, NotChecked=0, Total=2970 [2020-10-27 04:17:40,361 INFO L87 Difference]: Start difference. First operand 126 states and 130 transitions. Second operand 55 states. [2020-10-27 04:17:43,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:17:43,080 INFO L93 Difference]: Finished difference Result 201 states and 213 transitions. [2020-10-27 04:17:43,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-27 04:17:43,081 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 234 [2020-10-27 04:17:43,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:17:43,083 INFO L225 Difference]: With dead ends: 201 [2020-10-27 04:17:43,083 INFO L226 Difference]: Without dead ends: 132 [2020-10-27 04:17:43,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1511, Invalid=4969, Unknown=0, NotChecked=0, Total=6480 [2020-10-27 04:17:43,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-27 04:17:43,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2020-10-27 04:17:43,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-27 04:17:43,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 134 transitions. [2020-10-27 04:17:43,093 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 134 transitions. Word has length 234 [2020-10-27 04:17:43,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:17:43,094 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 134 transitions. [2020-10-27 04:17:43,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-10-27 04:17:43,094 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 134 transitions. [2020-10-27 04:17:43,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-27 04:17:43,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:17:43,096 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 26, 26, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:17:43,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 04:17:43,096 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:17:43,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:17:43,097 INFO L82 PathProgramCache]: Analyzing trace with hash -144756015, now seen corresponding path program 26 times [2020-10-27 04:17:43,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:17:43,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482146461] [2020-10-27 04:17:43,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:17:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:43,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:43,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:43,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:43,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:48,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:48,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-27 04:17:48,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:17:48,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-27 04:17:48,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:48,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 04:17:48,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:17:48,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 04:17:48,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:48,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:48,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:48,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:48,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:48,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:48,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:17:48,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:48,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:48,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:48,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 04:17:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:48,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:48,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:49,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:49,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 04:17:49,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:49,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-27 04:17:49,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:49,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 04:17:49,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:49,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 04:17:49,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:50,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 04:17:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:50,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:50,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:50,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:50,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 04:17:50,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:50,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-27 04:17:50,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:50,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 04:17:50,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:50,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 04:17:50,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:50,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-27 04:17:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:50,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:50,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:50,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:50,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 04:17:50,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:50,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-27 04:17:50,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:50,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 04:17:50,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:50,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 04:17:50,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:51,025 INFO L134 CoverageAnalysis]: Checked inductivity of 6931 backedges. 2028 proven. 4732 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-27 04:17:51,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482146461] [2020-10-27 04:17:51,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:17:51,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2020-10-27 04:17:51,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590517751] [2020-10-27 04:17:51,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-10-27 04:17:51,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:17:51,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-10-27 04:17:51,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=813, Invalid=2379, Unknown=0, NotChecked=0, Total=3192 [2020-10-27 04:17:51,028 INFO L87 Difference]: Start difference. First operand 130 states and 134 transitions. Second operand 57 states. [2020-10-27 04:17:53,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:17:53,774 INFO L93 Difference]: Finished difference Result 207 states and 219 transitions. [2020-10-27 04:17:53,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-27 04:17:53,775 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 242 [2020-10-27 04:17:53,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:17:53,776 INFO L225 Difference]: With dead ends: 207 [2020-10-27 04:17:53,776 INFO L226 Difference]: Without dead ends: 136 [2020-10-27 04:17:53,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1079 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1623, Invalid=5349, Unknown=0, NotChecked=0, Total=6972 [2020-10-27 04:17:53,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-27 04:17:53,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 134. [2020-10-27 04:17:53,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-27 04:17:53,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 138 transitions. [2020-10-27 04:17:53,787 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 138 transitions. Word has length 242 [2020-10-27 04:17:53,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:17:53,787 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 138 transitions. [2020-10-27 04:17:53,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-10-27 04:17:53,787 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 138 transitions. [2020-10-27 04:17:53,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-27 04:17:53,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:17:53,789 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:17:53,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 04:17:53,789 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:17:53,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:17:53,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1244200849, now seen corresponding path program 27 times [2020-10-27 04:17:53,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:17:53,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906315435] [2020-10-27 04:17:53,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:17:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:53,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:53,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:53,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:54,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:58,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:58,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-27 04:17:58,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:17:58,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-27 04:17:58,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:58,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 04:17:58,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:17:58,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 04:17:58,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:59,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:59,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:59,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:59,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:59,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:59,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:17:59,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:59,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:59,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:59,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:59,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:59,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 04:17:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:59,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:59,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:59,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:59,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 04:17:59,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:59,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-27 04:17:59,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:59,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 04:17:59,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:59,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 04:17:59,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:01,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-27 04:18:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:01,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:01,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:01,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:01,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 04:18:01,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:18:01,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-27 04:18:01,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:01,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 04:18:01,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:18:01,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 04:18:01,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:01,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-27 04:18:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:01,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:01,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:01,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:01,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 04:18:01,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:18:01,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-27 04:18:01,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:01,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 04:18:01,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:18:01,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 04:18:01,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:01,808 INFO L134 CoverageAnalysis]: Checked inductivity of 7467 backedges. 2187 proven. 5103 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-27 04:18:01,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906315435] [2020-10-27 04:18:01,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:18:01,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2020-10-27 04:18:01,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952969086] [2020-10-27 04:18:01,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-10-27 04:18:01,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:18:01,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-10-27 04:18:01,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=871, Invalid=2551, Unknown=0, NotChecked=0, Total=3422 [2020-10-27 04:18:01,810 INFO L87 Difference]: Start difference. First operand 134 states and 138 transitions. Second operand 59 states. [2020-10-27 04:18:04,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:18:04,671 INFO L93 Difference]: Finished difference Result 213 states and 225 transitions. [2020-10-27 04:18:04,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-27 04:18:04,671 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 250 [2020-10-27 04:18:04,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:18:04,673 INFO L225 Difference]: With dead ends: 213 [2020-10-27 04:18:04,673 INFO L226 Difference]: Without dead ends: 140 [2020-10-27 04:18:04,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1161 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1739, Invalid=5743, Unknown=0, NotChecked=0, Total=7482 [2020-10-27 04:18:04,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-27 04:18:04,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2020-10-27 04:18:04,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-27 04:18:04,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 142 transitions. [2020-10-27 04:18:04,684 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 142 transitions. Word has length 250 [2020-10-27 04:18:04,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:18:04,684 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 142 transitions. [2020-10-27 04:18:04,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-10-27 04:18:04,684 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 142 transitions. [2020-10-27 04:18:04,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-27 04:18:04,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:18:04,686 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 28, 28, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:18:04,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 04:18:04,686 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:18:04,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:18:04,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1890613841, now seen corresponding path program 28 times [2020-10-27 04:18:04,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:18:04,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113310144] [2020-10-27 04:18:04,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:18:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:04,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:04,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:04,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:04,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:09,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:09,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-27 04:18:09,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:18:09,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5133 [2020-10-27 04:18:09,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:09,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 04:18:09,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:18:09,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 04:18:09,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:10,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:18:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:10,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:10,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:10,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:18:10,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:10,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:18:10,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:10,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:10,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:10,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:10,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:10,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 04:18:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:10,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:10,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:10,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:10,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 04:18:10,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:18:10,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-27 04:18:10,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:10,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 04:18:10,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:18:10,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 04:18:10,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:12,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-27 04:18:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:12,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:12,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:12,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:12,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 04:18:12,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:18:12,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-27 04:18:12,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:12,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 04:18:12,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:18:12,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 04:18:12,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:12,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-27 04:18:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:12,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:12,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:13,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:13,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 04:18:13,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:18:13,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-27 04:18:13,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:13,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 04:18:13,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:18:13,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 04:18:13,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:13,177 INFO L134 CoverageAnalysis]: Checked inductivity of 8023 backedges. 2352 proven. 5488 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-27 04:18:13,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113310144] [2020-10-27 04:18:13,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:18:13,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2020-10-27 04:18:13,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859490401] [2020-10-27 04:18:13,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-10-27 04:18:13,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:18:13,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-10-27 04:18:13,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=931, Invalid=2729, Unknown=0, NotChecked=0, Total=3660 [2020-10-27 04:18:13,179 INFO L87 Difference]: Start difference. First operand 138 states and 142 transitions. Second operand 61 states.