/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:31:12,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:31:12,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:31:12,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:31:12,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:31:12,322 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:31:12,324 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:31:12,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:31:12,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:31:12,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:31:12,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:31:12,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:31:12,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:31:12,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:31:12,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:31:12,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:31:12,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:31:12,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:31:12,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:31:12,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:31:12,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:31:12,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:31:12,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:31:12,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:31:12,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:31:12,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:31:12,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:31:12,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:31:12,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:31:12,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:31:12,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:31:12,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:31:12,368 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:31:12,368 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:31:12,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:31:12,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:31:12,371 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:31:12,371 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:31:12,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:31:12,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:31:12,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:31:12,374 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 [2020-10-26 23:31:12,416 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:31:12,419 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:31:12,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:31:12,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:31:12,421 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:31:12,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:31:12,422 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:31:12,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:31:12,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:31:12,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:31:12,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:31:12,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:31:12,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:31:12,424 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:31:12,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:31:12,424 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:31:12,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:31:12,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:31:12,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:31:12,426 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:31:12,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:31:12,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:31:12,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:31:12,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:31:12,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:31:12,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:31:12,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:31:12,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:31:12,428 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:31:12,428 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:31:12,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:31:12,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:31:12,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:31:12,874 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:31:12,875 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:31:12,876 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label48.c [2020-10-26 23:31:12,972 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/528a83009/2da7b79b25b3410ab09b82fdae94d2f2/FLAG732bf9335 [2020-10-26 23:31:13,757 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:31:13,757 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label48.c [2020-10-26 23:31:13,777 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/528a83009/2da7b79b25b3410ab09b82fdae94d2f2/FLAG732bf9335 [2020-10-26 23:31:13,977 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/528a83009/2da7b79b25b3410ab09b82fdae94d2f2 [2020-10-26 23:31:13,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:31:13,993 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:31:13,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:31:13,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:31:14,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:31:14,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:31:13" (1/1) ... [2020-10-26 23:31:14,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bdeba37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:14, skipping insertion in model container [2020-10-26 23:31:14,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:31:13" (1/1) ... [2020-10-26 23:31:14,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:31:14,093 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:31:14,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:31:14,642 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:31:14,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:31:14,845 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:31:14,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:14 WrapperNode [2020-10-26 23:31:14,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:31:14,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:31:14,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:31:14,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:31:14,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:14" (1/1) ... [2020-10-26 23:31:14,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:14" (1/1) ... [2020-10-26 23:31:14,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:14" (1/1) ... [2020-10-26 23:31:14,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:14" (1/1) ... [2020-10-26 23:31:14,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:14" (1/1) ... [2020-10-26 23:31:15,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:14" (1/1) ... [2020-10-26 23:31:15,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:14" (1/1) ... [2020-10-26 23:31:15,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:31:15,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:31:15,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:31:15,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:31:15,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:14" (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 [2020-10-26 23:31:15,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:31:15,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:31:15,106 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:31:15,106 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:31:15,106 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:31:15,106 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:31:15,106 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:31:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:31:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:31:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:31:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:31:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:31:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:31:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:31:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:31:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:31:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:31:15,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:31:15,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:31:17,065 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:31:17,066 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:31:17,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:31:17 BoogieIcfgContainer [2020-10-26 23:31:17,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:31:17,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:31:17,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:31:17,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:31:17,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:31:13" (1/3) ... [2020-10-26 23:31:17,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eae88c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:31:17, skipping insertion in model container [2020-10-26 23:31:17,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:31:14" (2/3) ... [2020-10-26 23:31:17,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eae88c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:31:17, skipping insertion in model container [2020-10-26 23:31:17,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:31:17" (3/3) ... [2020-10-26 23:31:17,078 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label48.c [2020-10-26 23:31:17,091 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:31:17,097 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:31:17,112 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:31:17,143 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:31:17,143 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:31:17,143 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:31:17,143 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:31:17,143 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:31:17,144 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:31:17,144 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:31:17,144 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:31:17,168 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-26 23:31:17,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-26 23:31:17,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:17,178 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:17,179 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:17,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:17,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1910690514, now seen corresponding path program 1 times [2020-10-26 23:31:17,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:17,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809676873] [2020-10-26 23:31:17,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:17,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:17,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:17,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-26 23:31:17,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:17,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 607 [2020-10-26 23:31:17,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:17,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:31:17,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:31:17,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-26 23:31:17,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:31:18,213 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:31:18,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:18,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:18,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:18,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:18,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:18,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:31:18,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:18,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:18,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:18,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:31:18,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:18,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:31:18,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809676873] [2020-10-26 23:31:18,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:31:18,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:31:18,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960752765] [2020-10-26 23:31:18,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:31:18,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:18,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:31:18,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:31:18,350 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 4 states. [2020-10-26 23:31:18,522 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:31:21,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:21,903 INFO L93 Difference]: Finished difference Result 719 states and 1261 transitions. [2020-10-26 23:31:21,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:31:21,905 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-26 23:31:21,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:21,921 INFO L225 Difference]: With dead ends: 719 [2020-10-26 23:31:21,921 INFO L226 Difference]: Without dead ends: 381 [2020-10-26 23:31:21,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:31:21,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-26 23:31:22,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 375. [2020-10-26 23:31:22,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-10-26 23:31:22,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 526 transitions. [2020-10-26 23:31:22,007 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 526 transitions. Word has length 45 [2020-10-26 23:31:22,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:22,008 INFO L481 AbstractCegarLoop]: Abstraction has 375 states and 526 transitions. [2020-10-26 23:31:22,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:31:22,008 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 526 transitions. [2020-10-26 23:31:22,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-26 23:31:22,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:22,015 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:22,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:31:22,015 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:22,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:22,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1175722871, now seen corresponding path program 1 times [2020-10-26 23:31:22,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:22,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106331077] [2020-10-26 23:31:22,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:22,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:22,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:23,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:23,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:31:23,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:31:23,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1664 [2020-10-26 23:31:23,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:23,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:31:23,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:31:23,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:31:23,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:31:23,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:23,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:23,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:23,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:23,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:23,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:23,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:31:23,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:23,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:23,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:23,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:31:23,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:23,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:23,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:24,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:24,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:31:24,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:24,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-26 23:31:24,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:24,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:24,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:24,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:31:24,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:24,356 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:31:24,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106331077] [2020-10-26 23:31:24,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:31:24,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:31:24,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278638852] [2020-10-26 23:31:24,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:31:24,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:24,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:31:24,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:31:24,367 INFO L87 Difference]: Start difference. First operand 375 states and 526 transitions. Second operand 7 states. [2020-10-26 23:31:24,526 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-26 23:31:25,789 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-26 23:31:27,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:27,438 INFO L93 Difference]: Finished difference Result 948 states and 1297 transitions. [2020-10-26 23:31:27,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:31:27,441 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-26 23:31:27,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:27,446 INFO L225 Difference]: With dead ends: 948 [2020-10-26 23:31:27,446 INFO L226 Difference]: Without dead ends: 579 [2020-10-26 23:31:27,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:31:27,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2020-10-26 23:31:27,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 561. [2020-10-26 23:31:27,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2020-10-26 23:31:27,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 727 transitions. [2020-10-26 23:31:27,509 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 727 transitions. Word has length 118 [2020-10-26 23:31:27,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:27,509 INFO L481 AbstractCegarLoop]: Abstraction has 561 states and 727 transitions. [2020-10-26 23:31:27,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:31:27,509 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 727 transitions. [2020-10-26 23:31:27,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-26 23:31:27,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:27,516 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:27,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:31:27,517 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:27,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:27,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1238143057, now seen corresponding path program 1 times [2020-10-26 23:31:27,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:27,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691133932] [2020-10-26 23:31:27,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:27,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:27,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:27,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:29,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:29,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-26 23:31:29,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:31:29,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1966 [2020-10-26 23:31:29,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:29,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:31:29,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:31:29,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:31:29,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:29,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:29,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:29,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:29,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:29,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:29,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:31:29,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:29,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:29,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:29,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:31:29,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:29,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:29,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:29,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:29,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:29,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:29,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-26 23:31:29,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:29,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:29,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:29,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:31:29,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:30,146 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:31:30,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691133932] [2020-10-26 23:31:30,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:31:30,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:31:30,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507366159] [2020-10-26 23:31:30,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:31:30,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:30,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:31:30,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:31:30,152 INFO L87 Difference]: Start difference. First operand 561 states and 727 transitions. Second operand 7 states. [2020-10-26 23:31:32,127 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:31:34,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:34,259 INFO L93 Difference]: Finished difference Result 1356 states and 1894 transitions. [2020-10-26 23:31:34,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:31:34,261 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 154 [2020-10-26 23:31:34,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:34,276 INFO L225 Difference]: With dead ends: 1356 [2020-10-26 23:31:34,276 INFO L226 Difference]: Without dead ends: 983 [2020-10-26 23:31:34,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:31:34,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2020-10-26 23:31:34,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 935. [2020-10-26 23:31:34,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 935 states. [2020-10-26 23:31:34,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1161 transitions. [2020-10-26 23:31:34,370 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1161 transitions. Word has length 154 [2020-10-26 23:31:34,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:34,372 INFO L481 AbstractCegarLoop]: Abstraction has 935 states and 1161 transitions. [2020-10-26 23:31:34,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:31:34,372 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1161 transitions. [2020-10-26 23:31:34,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-26 23:31:34,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:34,390 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:34,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:31:34,396 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:34,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:34,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1262101396, now seen corresponding path program 1 times [2020-10-26 23:31:34,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:34,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284607532] [2020-10-26 23:31:34,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:34,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:34,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:34,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:34,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:35,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:36,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:36,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-26 23:31:36,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:31:36,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1596 [2020-10-26 23:31:36,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:36,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:31:36,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:31:36,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-26 23:31:36,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:36,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:36,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:36,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:36,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:36,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:36,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:31:36,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:36,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:36,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:36,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:31:36,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:36,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:36,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:36,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:36,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:36,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:31:36,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:36,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-26 23:31:36,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:36,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:36,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:36,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:31:36,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:36,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:31:36,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:36,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:36,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:36,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:31:36,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:36,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-26 23:31:36,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:36,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:31:36,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:36,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:31:36,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:36,890 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 14 proven. 63 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-26 23:31:36,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284607532] [2020-10-26 23:31:36,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:36,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:31:36,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099971178] [2020-10-26 23:31:36,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:31:36,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:36,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:31:36,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:31:36,893 INFO L87 Difference]: Start difference. First operand 935 states and 1161 transitions. Second operand 8 states. [2020-10-26 23:31:38,469 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-26 23:31:40,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:40,914 INFO L93 Difference]: Finished difference Result 1365 states and 1767 transitions. [2020-10-26 23:31:40,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:31:40,918 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 202 [2020-10-26 23:31:40,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:40,925 INFO L225 Difference]: With dead ends: 1365 [2020-10-26 23:31:40,925 INFO L226 Difference]: Without dead ends: 951 [2020-10-26 23:31:40,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:31:40,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2020-10-26 23:31:40,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 935. [2020-10-26 23:31:40,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 935 states. [2020-10-26 23:31:40,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1098 transitions. [2020-10-26 23:31:40,971 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1098 transitions. Word has length 202 [2020-10-26 23:31:40,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:40,972 INFO L481 AbstractCegarLoop]: Abstraction has 935 states and 1098 transitions. [2020-10-26 23:31:40,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:31:40,972 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1098 transitions. [2020-10-26 23:31:40,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-26 23:31:40,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:40,976 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:40,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:31:40,977 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:40,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:40,977 INFO L82 PathProgramCache]: Analyzing trace with hash -980477784, now seen corresponding path program 1 times [2020-10-26 23:31:40,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:40,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279761269] [2020-10-26 23:31:40,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:41,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:41,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:41,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:41,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:43,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:44,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:44,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-26 23:31:44,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:31:44,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3551 [2020-10-26 23:31:44,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:44,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:31:44,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:31:44,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-26 23:31:44,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:31:44,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:44,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:44,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:44,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:44,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:44,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:31:44,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:44,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:44,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:44,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:31:44,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:44,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:44,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:44,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:44,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:31:44,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:44,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-26 23:31:44,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:44,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:44,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:44,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:31:44,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:44,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:31:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:44,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:45,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:45,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:31:45,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:45,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-26 23:31:45,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:45,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:45,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:45,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:31:45,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:45,384 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-26 23:31:45,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279761269] [2020-10-26 23:31:45,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:45,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:31:45,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666838380] [2020-10-26 23:31:45,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:31:45,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:45,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:31:45,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:31:45,388 INFO L87 Difference]: Start difference. First operand 935 states and 1098 transitions. Second operand 7 states. [2020-10-26 23:31:45,550 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-26 23:31:47,977 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-26 23:31:48,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:48,834 INFO L93 Difference]: Finished difference Result 1526 states and 1894 transitions. [2020-10-26 23:31:48,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:31:48,836 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2020-10-26 23:31:48,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:48,844 INFO L225 Difference]: With dead ends: 1526 [2020-10-26 23:31:48,844 INFO L226 Difference]: Without dead ends: 1149 [2020-10-26 23:31:48,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:31:48,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2020-10-26 23:31:48,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1121. [2020-10-26 23:31:48,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1121 states. [2020-10-26 23:31:48,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1306 transitions. [2020-10-26 23:31:48,887 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1306 transitions. Word has length 212 [2020-10-26 23:31:48,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:48,888 INFO L481 AbstractCegarLoop]: Abstraction has 1121 states and 1306 transitions. [2020-10-26 23:31:48,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:31:48,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1306 transitions. [2020-10-26 23:31:48,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-26 23:31:48,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:48,892 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:48,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:31:48,893 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:48,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:48,893 INFO L82 PathProgramCache]: Analyzing trace with hash 976015884, now seen corresponding path program 1 times [2020-10-26 23:31:48,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:48,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815897323] [2020-10-26 23:31:48,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:48,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:49,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:49,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:50,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:50,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-26 23:31:50,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:31:50,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1055 [2020-10-26 23:31:50,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:50,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:50,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:31:50,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:31:50,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:50,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:50,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:50,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:50,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:50,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:50,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:31:50,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:50,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:50,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:50,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:50,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:50,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:50,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:50,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:50,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:31:50,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:50,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:31:50,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:50,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:50,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:50,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:31:50,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:31:50,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:31:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:50,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:50,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:50,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:31:50,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:50,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-26 23:31:50,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:50,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:50,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:50,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:31:50,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:50,827 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:31:50,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815897323] [2020-10-26 23:31:50,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:50,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:31:50,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115673266] [2020-10-26 23:31:50,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:31:50,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:50,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:31:50,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:31:50,832 INFO L87 Difference]: Start difference. First operand 1121 states and 1306 transitions. Second operand 7 states. [2020-10-26 23:31:51,480 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:31:53,827 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:31:54,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:31:54,251 INFO L93 Difference]: Finished difference Result 2454 states and 2988 transitions. [2020-10-26 23:31:54,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:31:54,253 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 262 [2020-10-26 23:31:54,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:31:54,260 INFO L225 Difference]: With dead ends: 2454 [2020-10-26 23:31:54,261 INFO L226 Difference]: Without dead ends: 1145 [2020-10-26 23:31:54,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:31:54,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2020-10-26 23:31:54,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1123. [2020-10-26 23:31:54,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-10-26 23:31:54,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1249 transitions. [2020-10-26 23:31:54,307 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1249 transitions. Word has length 262 [2020-10-26 23:31:54,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:31:54,307 INFO L481 AbstractCegarLoop]: Abstraction has 1123 states and 1249 transitions. [2020-10-26 23:31:54,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:31:54,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1249 transitions. [2020-10-26 23:31:54,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-26 23:31:54,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:31:54,313 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:31:54,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:31:54,314 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:31:54,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:31:54,314 INFO L82 PathProgramCache]: Analyzing trace with hash -594431141, now seen corresponding path program 1 times [2020-10-26 23:31:54,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:31:54,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079950091] [2020-10-26 23:31:54,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:31:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:54,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:54,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:54,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:55,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:56,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:56,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:58,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:59,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:59,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 359 [2020-10-26 23:31:59,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 23:31:59,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-26 23:31:59,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:59,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 23:31:59,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:31:59,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-26 23:31:59,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:59,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:59,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:59,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:59,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:59,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:59,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:31:59,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:59,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:59,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:59,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:31:59,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:59,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:59,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:59,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:59,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:59,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:59,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:31:59,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-26 23:31:59,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:59,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:59,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:59,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:31:59,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:00,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:00,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:00,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:00,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:00,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:00,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:00,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-26 23:32:00,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:00,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:00,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:00,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:32:00,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:32:00,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:00,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:00,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:00,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:32:00,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:00,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 23:32:00,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:00,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:00,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:00,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:32:00,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:00,821 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 291 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-26 23:32:00,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079950091] [2020-10-26 23:32:00,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:00,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:32:00,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694599706] [2020-10-26 23:32:00,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:32:00,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:00,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:32:00,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:32:00,825 INFO L87 Difference]: Start difference. First operand 1123 states and 1249 transitions. Second operand 9 states. [2020-10-26 23:32:03,611 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-26 23:32:04,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:04,113 INFO L93 Difference]: Finished difference Result 2282 states and 2691 transitions. [2020-10-26 23:32:04,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:32:04,114 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 343 [2020-10-26 23:32:04,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:04,124 INFO L225 Difference]: With dead ends: 2282 [2020-10-26 23:32:04,124 INFO L226 Difference]: Without dead ends: 1531 [2020-10-26 23:32:04,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:32:04,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2020-10-26 23:32:04,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1505. [2020-10-26 23:32:04,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1505 states. [2020-10-26 23:32:04,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 1690 transitions. [2020-10-26 23:32:04,185 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 1690 transitions. Word has length 343 [2020-10-26 23:32:04,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:04,185 INFO L481 AbstractCegarLoop]: Abstraction has 1505 states and 1690 transitions. [2020-10-26 23:32:04,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:32:04,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 1690 transitions. [2020-10-26 23:32:04,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-10-26 23:32:04,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:04,193 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:32:04,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:32:04,194 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:04,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:04,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1006289551, now seen corresponding path program 1 times [2020-10-26 23:32:04,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:04,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550972304] [2020-10-26 23:32:04,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:04,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:04,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:04,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:04,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:05,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:08,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:08,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 390 [2020-10-26 23:32:08,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:32:08,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4027 [2020-10-26 23:32:08,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:08,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:32:08,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:32:08,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 381 [2020-10-26 23:32:08,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:08,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:08,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:08,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:08,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:08,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:08,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:32:08,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:08,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:08,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:08,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:32:08,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:08,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:08,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:08,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:08,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:08,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:08,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:08,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-26 23:32:08,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:08,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:08,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:08,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:32:08,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:08,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:08,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:08,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:08,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:08,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:08,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:08,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-26 23:32:08,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:08,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:08,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:08,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:32:08,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:09,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:09,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:09,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:09,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:09,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:09,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:09,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-26 23:32:09,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:09,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:09,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:09,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:32:09,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:09,492 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 275 proven. 36 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-26 23:32:09,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550972304] [2020-10-26 23:32:09,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:09,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:32:09,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752598244] [2020-10-26 23:32:09,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:32:09,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:09,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:32:09,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:32:09,495 INFO L87 Difference]: Start difference. First operand 1505 states and 1690 transitions. Second operand 8 states. [2020-10-26 23:32:09,637 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:32:10,525 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-26 23:32:12,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:12,890 INFO L93 Difference]: Finished difference Result 2268 states and 2616 transitions. [2020-10-26 23:32:12,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:32:12,891 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 374 [2020-10-26 23:32:12,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:12,902 INFO L225 Difference]: With dead ends: 2268 [2020-10-26 23:32:12,902 INFO L226 Difference]: Without dead ends: 2265 [2020-10-26 23:32:12,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:32:12,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2020-10-26 23:32:12,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 1881. [2020-10-26 23:32:12,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1881 states. [2020-10-26 23:32:12,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 2162 transitions. [2020-10-26 23:32:12,959 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 2162 transitions. Word has length 374 [2020-10-26 23:32:12,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:12,960 INFO L481 AbstractCegarLoop]: Abstraction has 1881 states and 2162 transitions. [2020-10-26 23:32:12,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:32:12,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 2162 transitions. [2020-10-26 23:32:12,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2020-10-26 23:32:12,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:12,968 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:32:12,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:32:12,969 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:12,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:12,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1982264506, now seen corresponding path program 1 times [2020-10-26 23:32:12,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:12,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835955962] [2020-10-26 23:32:12,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:13,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:13,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:13,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:13,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:13,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:14,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:14,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:17,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:17,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 461 [2020-10-26 23:32:17,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:32:17,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4434 [2020-10-26 23:32:17,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:17,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:32:17,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:32:17,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-26 23:32:17,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:17,675 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:32:17,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:17,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:17,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:17,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:17,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:17,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:32:17,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:17,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:17,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:17,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:17,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:17,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:17,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:17,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:17,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:17,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:17,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:32:17,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:17,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:17,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:17,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:17,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:17,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:17,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:17,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:17,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:17,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:17,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-26 23:32:17,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:17,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:17,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:17,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:32:17,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:17,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:17,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:17,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:17,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:17,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:32:17,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:17,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-26 23:32:17,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:17,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:17,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:17,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:32:17,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:18,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-26 23:32:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:18,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:18,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:18,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:32:18,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:18,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-26 23:32:18,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:18,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:18,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:18,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:32:18,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:18,530 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 578 proven. 10 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-26 23:32:18,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835955962] [2020-10-26 23:32:18,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:18,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:32:18,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489371035] [2020-10-26 23:32:18,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:32:18,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:18,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:32:18,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:32:18,533 INFO L87 Difference]: Start difference. First operand 1881 states and 2162 transitions. Second operand 9 states. [2020-10-26 23:32:18,688 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:32:21,954 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-26 23:32:22,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:22,391 INFO L93 Difference]: Finished difference Result 4350 states and 5178 transitions. [2020-10-26 23:32:22,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:32:22,394 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 443 [2020-10-26 23:32:22,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:22,407 INFO L225 Difference]: With dead ends: 4350 [2020-10-26 23:32:22,408 INFO L226 Difference]: Without dead ends: 2649 [2020-10-26 23:32:22,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:32:22,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2649 states. [2020-10-26 23:32:22,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2649 to 2447. [2020-10-26 23:32:22,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2447 states. [2020-10-26 23:32:22,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2447 states to 2447 states and 2703 transitions. [2020-10-26 23:32:22,482 INFO L78 Accepts]: Start accepts. Automaton has 2447 states and 2703 transitions. Word has length 443 [2020-10-26 23:32:22,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:22,483 INFO L481 AbstractCegarLoop]: Abstraction has 2447 states and 2703 transitions. [2020-10-26 23:32:22,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:32:22,483 INFO L276 IsEmpty]: Start isEmpty. Operand 2447 states and 2703 transitions. [2020-10-26 23:32:22,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2020-10-26 23:32:22,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:22,491 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:32:22,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:32:22,491 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:22,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:22,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1118546437, now seen corresponding path program 1 times [2020-10-26 23:32:22,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:22,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477424774] [2020-10-26 23:32:22,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:22,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:22,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:23,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:23,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:24,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:25,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:27,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:27,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 622 [2020-10-26 23:32:27,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:32:27,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-26 23:32:27,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:27,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:27,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:32:27,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 23:32:27,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:27,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:27,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:27,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:27,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:27,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:27,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:32:27,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:27,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:27,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:27,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:27,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:27,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:27,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:27,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:27,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:27,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:27,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:27,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:32:27,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:27,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:27,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:27,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:27,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:27,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:27,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:28,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:28,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:28,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:28,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-26 23:32:28,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:28,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:28,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:28,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:32:28,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:32:28,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:28,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:28,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:28,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:28,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:28,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:28,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-26 23:32:28,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:28,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:28,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:28,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:32:28,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:28,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-26 23:32:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:28,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:28,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:28,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:32:28,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:28,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-26 23:32:28,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:28,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:28,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-26 23:32:28,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:28,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:28,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-26 23:32:28,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:28,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:28,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:28,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:32:28,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:28,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:32:28,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:28,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:28,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-26 23:32:28,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:28,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:28,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1222 backedges. 419 proven. 201 refuted. 0 times theorem prover too weak. 602 trivial. 0 not checked. [2020-10-26 23:32:28,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477424774] [2020-10-26 23:32:28,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:28,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:32:28,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003616587] [2020-10-26 23:32:28,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:32:28,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:28,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:32:28,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:32:28,720 INFO L87 Difference]: Start difference. First operand 2447 states and 2703 transitions. Second operand 7 states. [2020-10-26 23:32:29,634 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:32:30,781 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:32:33,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:33,024 INFO L93 Difference]: Finished difference Result 5647 states and 6380 transitions. [2020-10-26 23:32:33,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:32:33,025 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 602 [2020-10-26 23:32:33,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:33,045 INFO L225 Difference]: With dead ends: 5647 [2020-10-26 23:32:33,045 INFO L226 Difference]: Without dead ends: 3572 [2020-10-26 23:32:33,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:32:33,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3572 states. [2020-10-26 23:32:33,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3572 to 3371. [2020-10-26 23:32:33,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3371 states. [2020-10-26 23:32:33,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3371 states to 3371 states and 3811 transitions. [2020-10-26 23:32:33,149 INFO L78 Accepts]: Start accepts. Automaton has 3371 states and 3811 transitions. Word has length 602 [2020-10-26 23:32:33,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:33,150 INFO L481 AbstractCegarLoop]: Abstraction has 3371 states and 3811 transitions. [2020-10-26 23:32:33,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:32:33,150 INFO L276 IsEmpty]: Start isEmpty. Operand 3371 states and 3811 transitions. [2020-10-26 23:32:33,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2020-10-26 23:32:33,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:33,157 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:32:33,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:32:33,158 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:33,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:33,158 INFO L82 PathProgramCache]: Analyzing trace with hash 692153339, now seen corresponding path program 1 times [2020-10-26 23:32:33,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:33,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691170301] [2020-10-26 23:32:33,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:33,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:33,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:34,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:34,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:34,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:38,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:38,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 629 [2020-10-26 23:32:38,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:32:38,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-26 23:32:38,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:38,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:32:38,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:32:38,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-26 23:32:38,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:38,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:38,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:38,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:38,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:38,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:38,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:38,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:32:38,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:38,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:38,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:38,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:38,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:38,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:38,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:38,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:38,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:38,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:38,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:32:38,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:38,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:38,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:38,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:38,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:38,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:38,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:38,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:38,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:38,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:38,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 23:32:38,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:38,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:38,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:38,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:32:38,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:38,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:38,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:38,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:38,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:38,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:38,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-26 23:32:38,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:38,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:38,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:38,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:32:38,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:38,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:38,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:39,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:39,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:32:39,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:39,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-26 23:32:39,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:39,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:39,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:39,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:32:39,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:39,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2020-10-26 23:32:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:39,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:39,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:39,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:32:39,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:39,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:32:39,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:39,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:39,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-26 23:32:39,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:39,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:39,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1229 backedges. 740 proven. 188 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-10-26 23:32:39,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691170301] [2020-10-26 23:32:39,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:39,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:32:39,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558916800] [2020-10-26 23:32:39,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:32:39,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:39,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:32:39,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:32:39,862 INFO L87 Difference]: Start difference. First operand 3371 states and 3811 transitions. Second operand 8 states. [2020-10-26 23:32:40,026 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:32:41,948 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-26 23:32:42,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:42,738 INFO L93 Difference]: Finished difference Result 6750 states and 7646 transitions. [2020-10-26 23:32:42,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:32:42,740 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 609 [2020-10-26 23:32:42,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:42,760 INFO L225 Difference]: With dead ends: 6750 [2020-10-26 23:32:42,760 INFO L226 Difference]: Without dead ends: 3751 [2020-10-26 23:32:42,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:32:42,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3751 states. [2020-10-26 23:32:42,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3751 to 3739. [2020-10-26 23:32:42,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3739 states. [2020-10-26 23:32:42,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3739 states to 3739 states and 4191 transitions. [2020-10-26 23:32:42,870 INFO L78 Accepts]: Start accepts. Automaton has 3739 states and 4191 transitions. Word has length 609 [2020-10-26 23:32:42,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:42,871 INFO L481 AbstractCegarLoop]: Abstraction has 3739 states and 4191 transitions. [2020-10-26 23:32:42,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:32:42,872 INFO L276 IsEmpty]: Start isEmpty. Operand 3739 states and 4191 transitions. [2020-10-26 23:32:42,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2020-10-26 23:32:42,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:42,878 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:32:42,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:32:42,879 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:42,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:42,879 INFO L82 PathProgramCache]: Analyzing trace with hash 498303815, now seen corresponding path program 1 times [2020-10-26 23:32:42,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:42,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129416742] [2020-10-26 23:32:42,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:43,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:43,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:43,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:43,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:44,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:48,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:48,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 655 [2020-10-26 23:32:48,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:32:48,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-26 23:32:48,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:48,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:32:48,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:32:48,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 604 [2020-10-26 23:32:48,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:48,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:48,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:48,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:48,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:48,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:48,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:32:48,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:48,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:48,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:48,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:32:48,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:48,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:48,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:48,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:48,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:48,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:48,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:48,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-26 23:32:48,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:48,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:48,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:48,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:32:48,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:48,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:48,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:48,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:48,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:48,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:48,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:48,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:48,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-26 23:32:48,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:48,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:48,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:48,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:32:48,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:48,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:48,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:48,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:49,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:49,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:49,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:49,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-26 23:32:49,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:49,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:49,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:49,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:32:49,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:49,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:49,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:49,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:49,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:49,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:32:49,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:49,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-26 23:32:49,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:49,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:49,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:49,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-26 23:32:49,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:49,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:32:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:49,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:49,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:49,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:32:49,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:49,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-26 23:32:49,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:49,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:49,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:49,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:32:49,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:50,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1229 backedges. 453 proven. 322 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2020-10-26 23:32:50,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129416742] [2020-10-26 23:32:50,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:50,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:32:50,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531059657] [2020-10-26 23:32:50,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:32:50,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:50,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:32:50,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:32:50,540 INFO L87 Difference]: Start difference. First operand 3739 states and 4191 transitions. Second operand 8 states. [2020-10-26 23:32:50,678 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:32:52,500 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-26 23:32:53,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:53,237 INFO L93 Difference]: Finished difference Result 7298 states and 8211 transitions. [2020-10-26 23:32:53,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:32:53,242 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 635 [2020-10-26 23:32:53,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:53,262 INFO L225 Difference]: With dead ends: 7298 [2020-10-26 23:32:53,262 INFO L226 Difference]: Without dead ends: 3931 [2020-10-26 23:32:53,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:32:53,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2020-10-26 23:32:53,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 3735. [2020-10-26 23:32:53,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3735 states. [2020-10-26 23:32:53,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3735 states to 3735 states and 4165 transitions. [2020-10-26 23:32:53,361 INFO L78 Accepts]: Start accepts. Automaton has 3735 states and 4165 transitions. Word has length 635 [2020-10-26 23:32:53,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:53,362 INFO L481 AbstractCegarLoop]: Abstraction has 3735 states and 4165 transitions. [2020-10-26 23:32:53,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:32:53,363 INFO L276 IsEmpty]: Start isEmpty. Operand 3735 states and 4165 transitions. [2020-10-26 23:32:53,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2020-10-26 23:32:53,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:53,370 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:32:53,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:32:53,371 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:53,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:53,371 INFO L82 PathProgramCache]: Analyzing trace with hash 426201640, now seen corresponding path program 1 times [2020-10-26 23:32:53,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:53,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545373943] [2020-10-26 23:32:53,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:53,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:53,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:55,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:55,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:56,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:58,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:58,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 730 [2020-10-26 23:32:58,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:32:58,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-26 23:32:58,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:58,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:58,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:32:58,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:32:58,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:58,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:58,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:58,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:58,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:58,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:58,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:32:58,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:58,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:58,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:58,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:58,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:58,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:58,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:58,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:58,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:32:58,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:58,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:32:58,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:58,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:58,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:58,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:58,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:58,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:32:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:58,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:58,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:58,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:32:58,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:58,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:32:58,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:58,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:58,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:58,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:58,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:58,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:32:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:58,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:58,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:58,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:32:58,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:58,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:32:58,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:58,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:58,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:58,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:58,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:58,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:32:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:58,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:59,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:59,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:32:59,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:59,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:32:59,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:59,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:59,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:59,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:32:59,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:59,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:32:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:59,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:59,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:59,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:32:59,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:59,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-26 23:32:59,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:59,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:59,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:59,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:32:59,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:59,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2020-10-26 23:32:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:59,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:59,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:59,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:32:59,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:59,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:32:59,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:59,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:32:59,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-26 23:32:59,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:32:59,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:59,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1631 backedges. 533 proven. 72 refuted. 0 times theorem prover too weak. 1026 trivial. 0 not checked. [2020-10-26 23:32:59,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545373943] [2020-10-26 23:32:59,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:32:59,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:32:59,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577245734] [2020-10-26 23:32:59,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:32:59,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:59,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:32:59,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:32:59,562 INFO L87 Difference]: Start difference. First operand 3735 states and 4165 transitions. Second operand 7 states. [2020-10-26 23:33:00,875 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-26 23:33:02,144 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-26 23:33:02,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:02,501 INFO L93 Difference]: Finished difference Result 7302 states and 8199 transitions. [2020-10-26 23:33:02,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:33:02,501 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 708 [2020-10-26 23:33:02,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:02,521 INFO L225 Difference]: With dead ends: 7302 [2020-10-26 23:33:02,521 INFO L226 Difference]: Without dead ends: 3939 [2020-10-26 23:33:02,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:33:02,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3939 states. [2020-10-26 23:33:02,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3939 to 3923. [2020-10-26 23:33:02,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3923 states. [2020-10-26 23:33:02,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 4377 transitions. [2020-10-26 23:33:02,620 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 4377 transitions. Word has length 708 [2020-10-26 23:33:02,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:02,621 INFO L481 AbstractCegarLoop]: Abstraction has 3923 states and 4377 transitions. [2020-10-26 23:33:02,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:33:02,622 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 4377 transitions. [2020-10-26 23:33:02,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2020-10-26 23:33:02,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:02,630 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:33:02,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:33:02,630 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:02,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:02,631 INFO L82 PathProgramCache]: Analyzing trace with hash 2018977868, now seen corresponding path program 1 times [2020-10-26 23:33:02,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:02,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784625459] [2020-10-26 23:33:02,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:02,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:02,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:02,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:03,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:03,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:07,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:07,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 748 [2020-10-26 23:33:07,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:33:07,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-26 23:33:07,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:07,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:33:07,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-26 23:33:07,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-26 23:33:07,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:08,092 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:33:08,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:08,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:08,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:08,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:08,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:08,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:33:08,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:08,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:08,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:08,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:08,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:08,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:33:08,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:08,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:08,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:08,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:33:08,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:08,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:33:08,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:08,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:08,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:08,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:08,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:08,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:33:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:08,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:08,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:08,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:33:08,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:08,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:33:08,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:08,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:08,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:08,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:08,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:08,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:33:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:08,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:08,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:08,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:33:08,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:08,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 23:33:08,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:08,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:08,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:08,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:33:08,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:08,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:33:08,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:08,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:08,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:08,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:08,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:33:08,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:33:08,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-10-26 23:33:08,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:08,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:33:08,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:08,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-26 23:33:08,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:09,230 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-10-26 23:33:09,477 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-10-26 23:33:09,848 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2020-10-26 23:33:10,128 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-10-26 23:33:10,541 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2020-10-26 23:33:10,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-26 23:33:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:10,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:10,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:10,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:33:10,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:10,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:33:10,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:10,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:10,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:33:10,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:10,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:10,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 594 [2020-10-26 23:33:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:10,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:11,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:11,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:33:11,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:11,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-26 23:33:11,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:11,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:11,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-26 23:33:11,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:11,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:12,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1631 backedges. 583 proven. 164 refuted. 0 times theorem prover too weak. 884 trivial. 0 not checked. [2020-10-26 23:33:12,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784625459] [2020-10-26 23:33:12,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:33:12,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 23:33:12,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817024817] [2020-10-26 23:33:12,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 23:33:12,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:12,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 23:33:12,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:33:12,364 INFO L87 Difference]: Start difference. First operand 3923 states and 4377 transitions. Second operand 13 states. [2020-10-26 23:33:13,733 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2020-10-26 23:33:14,811 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 92 [2020-10-26 23:33:15,409 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2020-10-26 23:33:15,833 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 93 [2020-10-26 23:33:16,312 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2020-10-26 23:33:16,683 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 83 [2020-10-26 23:33:17,076 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 42 [2020-10-26 23:33:17,267 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-26 23:33:17,448 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-26 23:33:18,759 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 83 [2020-10-26 23:33:19,873 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 85 [2020-10-26 23:33:20,509 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 86 [2020-10-26 23:33:20,989 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 87 [2020-10-26 23:33:21,513 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 86 [2020-10-26 23:33:21,958 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 80 [2020-10-26 23:33:22,505 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:33:22,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:22,964 INFO L93 Difference]: Finished difference Result 8404 states and 9408 transitions. [2020-10-26 23:33:22,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-26 23:33:22,965 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 726 [2020-10-26 23:33:22,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:22,994 INFO L225 Difference]: With dead ends: 8404 [2020-10-26 23:33:22,994 INFO L226 Difference]: Without dead ends: 4728 [2020-10-26 23:33:23,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=253, Invalid=617, Unknown=0, NotChecked=0, Total=870 [2020-10-26 23:33:23,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4728 states. [2020-10-26 23:33:23,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4728 to 4406. [2020-10-26 23:33:23,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4406 states. [2020-10-26 23:33:23,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4406 states to 4406 states and 4883 transitions. [2020-10-26 23:33:23,110 INFO L78 Accepts]: Start accepts. Automaton has 4406 states and 4883 transitions. Word has length 726 [2020-10-26 23:33:23,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:23,111 INFO L481 AbstractCegarLoop]: Abstraction has 4406 states and 4883 transitions. [2020-10-26 23:33:23,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 23:33:23,111 INFO L276 IsEmpty]: Start isEmpty. Operand 4406 states and 4883 transitions. [2020-10-26 23:33:23,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2020-10-26 23:33:23,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:23,120 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:33:23,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:33:23,121 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:23,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:23,122 INFO L82 PathProgramCache]: Analyzing trace with hash -990848362, now seen corresponding path program 1 times [2020-10-26 23:33:23,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:23,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654121986] [2020-10-26 23:33:23,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:23,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:23,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:25,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:25,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:26,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:28,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:28,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 771 [2020-10-26 23:33:28,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:33:28,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-26 23:33:28,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:28,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:28,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:33:28,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 23:33:28,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:28,529 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:33:28,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:28,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:28,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:28,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:28,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:28,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:33:28,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:28,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:28,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:28,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:28,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:33:28,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:33:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:28,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:28,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:28,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:33:28,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:28,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:33:28,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:28,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:28,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:28,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:28,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:28,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:33:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:28,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:28,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:28,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:33:28,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:28,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:33:28,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:28,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:28,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:28,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:28,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:28,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:33:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:28,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:28,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:28,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:33:28,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:28,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:33:28,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:28,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:28,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:28,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:28,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:28,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:33:28,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:28,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:29,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:29,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:33:29,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:29,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-26 23:33:29,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:29,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:29,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:29,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:33:29,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:29,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:33:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:29,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:29,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:29,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:33:29,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:29,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-26 23:33:29,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:29,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:29,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:29,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:33:29,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:29,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 617 [2020-10-26 23:33:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:29,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:29,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:29,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:33:29,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:29,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:33:29,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:29,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:29,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-26 23:33:29,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:29,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:29,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1808 backedges. 688 proven. 94 refuted. 0 times theorem prover too weak. 1026 trivial. 0 not checked. [2020-10-26 23:33:29,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654121986] [2020-10-26 23:33:29,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:33:29,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:33:29,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035853485] [2020-10-26 23:33:29,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:33:29,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:29,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:33:29,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:33:29,672 INFO L87 Difference]: Start difference. First operand 4406 states and 4883 transitions. Second operand 7 states. [2020-10-26 23:33:29,820 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:33:32,333 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:33:32,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:32,761 INFO L93 Difference]: Finished difference Result 10106 states and 11408 transitions. [2020-10-26 23:33:32,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:33:32,762 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 749 [2020-10-26 23:33:32,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:32,780 INFO L225 Difference]: With dead ends: 10106 [2020-10-26 23:33:32,780 INFO L226 Difference]: Without dead ends: 6072 [2020-10-26 23:33:32,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:33:32,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6072 states. [2020-10-26 23:33:32,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6072 to 5702. [2020-10-26 23:33:32,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5702 states. [2020-10-26 23:33:32,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5702 states to 5702 states and 6411 transitions. [2020-10-26 23:33:32,908 INFO L78 Accepts]: Start accepts. Automaton has 5702 states and 6411 transitions. Word has length 749 [2020-10-26 23:33:32,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:32,909 INFO L481 AbstractCegarLoop]: Abstraction has 5702 states and 6411 transitions. [2020-10-26 23:33:32,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:33:32,910 INFO L276 IsEmpty]: Start isEmpty. Operand 5702 states and 6411 transitions. [2020-10-26 23:33:32,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2020-10-26 23:33:32,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:32,920 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:33:32,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:33:32,920 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:32,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:32,921 INFO L82 PathProgramCache]: Analyzing trace with hash -758398637, now seen corresponding path program 1 times [2020-10-26 23:33:32,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:32,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857055028] [2020-10-26 23:33:32,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:33,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:33,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:34,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:35,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:36,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:38,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:38,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 831 [2020-10-26 23:33:38,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:33:38,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-26 23:33:38,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:38,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:38,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:33:38,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:33:38,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:38,269 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:33:38,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:38,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:38,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:38,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:38,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:38,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:38,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:33:38,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:38,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:38,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:38,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:38,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:38,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:33:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:38,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:38,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:38,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:33:38,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:38,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:33:38,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:38,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:38,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:38,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:38,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:38,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:33:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:38,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:38,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:38,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:33:38,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:38,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:33:38,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:38,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:38,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:38,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:38,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:38,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:33:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:38,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:38,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:38,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:33:38,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:38,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:33:38,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:38,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:38,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:38,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:38,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:38,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:33:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:38,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:38,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:38,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:33:38,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:38,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:33:38,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:38,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:38,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:38,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:38,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:38,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:33:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:38,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:38,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:38,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:33:38,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:38,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-26 23:33:38,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:38,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:38,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:38,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:33:38,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:38,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:33:38,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:38,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:38,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:38,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:33:38,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:38,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-26 23:33:38,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:38,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:38,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:38,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:33:38,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:38,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 675 [2020-10-26 23:33:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:38,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:38,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:38,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:33:38,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:38,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:33:38,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:38,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:38,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-26 23:33:38,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:38,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:39,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2146 backedges. 649 proven. 72 refuted. 0 times theorem prover too weak. 1425 trivial. 0 not checked. [2020-10-26 23:33:39,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857055028] [2020-10-26 23:33:39,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:33:39,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:33:39,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74690659] [2020-10-26 23:33:39,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:33:39,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:39,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:33:39,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:33:39,607 INFO L87 Difference]: Start difference. First operand 5702 states and 6411 transitions. Second operand 7 states. [2020-10-26 23:33:41,043 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-26 23:33:42,380 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-26 23:33:43,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:43,093 INFO L93 Difference]: Finished difference Result 12508 states and 14201 transitions. [2020-10-26 23:33:43,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:33:43,094 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 807 [2020-10-26 23:33:43,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:43,114 INFO L225 Difference]: With dead ends: 12508 [2020-10-26 23:33:43,114 INFO L226 Difference]: Without dead ends: 6994 [2020-10-26 23:33:43,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:33:43,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6994 states. [2020-10-26 23:33:43,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6994 to 6444. [2020-10-26 23:33:43,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6444 states. [2020-10-26 23:33:43,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6444 states to 6444 states and 7207 transitions. [2020-10-26 23:33:43,260 INFO L78 Accepts]: Start accepts. Automaton has 6444 states and 7207 transitions. Word has length 807 [2020-10-26 23:33:43,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:43,261 INFO L481 AbstractCegarLoop]: Abstraction has 6444 states and 7207 transitions. [2020-10-26 23:33:43,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:33:43,261 INFO L276 IsEmpty]: Start isEmpty. Operand 6444 states and 7207 transitions. [2020-10-26 23:33:43,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 882 [2020-10-26 23:33:43,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:43,275 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:33:43,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:33:43,275 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:43,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:43,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1561945007, now seen corresponding path program 1 times [2020-10-26 23:33:43,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:43,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986307347] [2020-10-26 23:33:43,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:43,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:43,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:46,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:46,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:47,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:48,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:48,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 905 [2020-10-26 23:33:48,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:33:48,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-26 23:33:48,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:48,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:48,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 686 [2020-10-26 23:33:48,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:33:48,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:48,651 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:33:48,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:48,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:48,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:48,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:48,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:48,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:33:48,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:48,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:48,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:48,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:48,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:48,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:33:48,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:48,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:48,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:48,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:33:48,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:48,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:33:48,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:48,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:48,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:48,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:48,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:48,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:33:48,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:48,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:48,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:48,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:33:48,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:48,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:33:48,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:48,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:48,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:48,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:48,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:48,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:33:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:48,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:48,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:48,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:33:48,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:48,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:33:48,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:48,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:48,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:48,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:48,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:48,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:33:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:48,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:48,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:48,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:33:48,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:48,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:33:48,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:48,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:48,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:48,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:48,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:48,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:33:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:48,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:49,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:49,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:33:49,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:49,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-26 23:33:49,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:49,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:49,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:49,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-26 23:33:49,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:49,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:33:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:49,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:49,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:49,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:33:49,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:49,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-26 23:33:49,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:49,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:49,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:49,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:33:49,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:49,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 749 [2020-10-26 23:33:49,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:49,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:49,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:49,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:33:49,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:49,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:33:49,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:49,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:49,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-26 23:33:49,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:49,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:49,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2331 backedges. 649 proven. 72 refuted. 0 times theorem prover too weak. 1610 trivial. 0 not checked. [2020-10-26 23:33:49,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986307347] [2020-10-26 23:33:49,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:33:49,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:33:49,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640529980] [2020-10-26 23:33:49,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:33:49,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:49,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:33:49,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:33:49,765 INFO L87 Difference]: Start difference. First operand 6444 states and 7207 transitions. Second operand 7 states. [2020-10-26 23:33:51,216 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:33:52,527 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-26 23:33:52,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:52,894 INFO L93 Difference]: Finished difference Result 12702 states and 14264 transitions. [2020-10-26 23:33:52,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:33:52,899 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 881 [2020-10-26 23:33:52,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:52,921 INFO L225 Difference]: With dead ends: 12702 [2020-10-26 23:33:52,921 INFO L226 Difference]: Without dead ends: 6630 [2020-10-26 23:33:52,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:33:52,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6630 states. [2020-10-26 23:33:53,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6630 to 6628. [2020-10-26 23:33:53,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6628 states. [2020-10-26 23:33:53,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6628 states to 6628 states and 7411 transitions. [2020-10-26 23:33:53,067 INFO L78 Accepts]: Start accepts. Automaton has 6628 states and 7411 transitions. Word has length 881 [2020-10-26 23:33:53,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:53,068 INFO L481 AbstractCegarLoop]: Abstraction has 6628 states and 7411 transitions. [2020-10-26 23:33:53,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:33:53,069 INFO L276 IsEmpty]: Start isEmpty. Operand 6628 states and 7411 transitions. [2020-10-26 23:33:53,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2020-10-26 23:33:53,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:53,086 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:33:53,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 23:33:53,086 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:53,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:53,087 INFO L82 PathProgramCache]: Analyzing trace with hash -31057492, now seen corresponding path program 2 times [2020-10-26 23:33:53,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:53,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117445896] [2020-10-26 23:33:53,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:53,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:53,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:53,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:54,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:58,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:58,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 914 [2020-10-26 23:33:58,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:33:58,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-26 23:33:58,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:58,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:58,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:33:58,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:33:58,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:58,509 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:33:58,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:58,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:58,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:58,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:58,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:58,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:33:58,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:58,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:58,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:58,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:58,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:58,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:33:58,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:58,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:58,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:58,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:33:58,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:58,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:33:58,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:58,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:58,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:58,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:58,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:58,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:33:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:58,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:58,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:58,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:33:58,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:58,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:33:58,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:58,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:58,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:58,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:58,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:58,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:33:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:58,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:58,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:58,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:33:58,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:58,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:33:58,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:58,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:58,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:58,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:58,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:58,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:33:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:58,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:58,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:58,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:33:58,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:58,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:33:58,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:58,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:58,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:58,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:58,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:58,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:33:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:58,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:58,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:58,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:33:58,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:58,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-26 23:33:58,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:58,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:58,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:58,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:33:58,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:58,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:33:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:58,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:58,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:58,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:33:58,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:58,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-26 23:33:58,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:58,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:58,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:58,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:33:58,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:59,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2020-10-26 23:33:59,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:59,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:59,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:59,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:33:59,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:59,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:33:59,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:59,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:59,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:33:59,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:59,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:59,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 756 [2020-10-26 23:33:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:59,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:59,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:59,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:33:59,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:59,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:33:59,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:59,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:59,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-26 23:33:59,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:59,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:59,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2742 backedges. 746 proven. 150 refuted. 0 times theorem prover too weak. 1846 trivial. 0 not checked. [2020-10-26 23:33:59,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117445896] [2020-10-26 23:33:59,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:33:59,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:33:59,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018900821] [2020-10-26 23:33:59,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:33:59,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:59,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:33:59,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:33:59,566 INFO L87 Difference]: Start difference. First operand 6628 states and 7411 transitions. Second operand 7 states. [2020-10-26 23:34:01,105 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:34:02,598 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:34:03,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:34:03,422 INFO L93 Difference]: Finished difference Result 13644 states and 15298 transitions. [2020-10-26 23:34:03,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:34:03,426 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 888 [2020-10-26 23:34:03,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:34:03,459 INFO L225 Difference]: With dead ends: 13644 [2020-10-26 23:34:03,459 INFO L226 Difference]: Without dead ends: 7388 [2020-10-26 23:34:03,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:34:03,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7388 states. [2020-10-26 23:34:03,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7388 to 6996. [2020-10-26 23:34:03,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6996 states. [2020-10-26 23:34:03,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6996 states to 6996 states and 7738 transitions. [2020-10-26 23:34:03,604 INFO L78 Accepts]: Start accepts. Automaton has 6996 states and 7738 transitions. Word has length 888 [2020-10-26 23:34:03,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:34:03,605 INFO L481 AbstractCegarLoop]: Abstraction has 6996 states and 7738 transitions. [2020-10-26 23:34:03,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:34:03,605 INFO L276 IsEmpty]: Start isEmpty. Operand 6996 states and 7738 transitions. [2020-10-26 23:34:03,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 907 [2020-10-26 23:34:03,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:34:03,618 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:34:03,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 23:34:03,618 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:34:03,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:34:03,619 INFO L82 PathProgramCache]: Analyzing trace with hash -2036443072, now seen corresponding path program 1 times [2020-10-26 23:34:03,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:34:03,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467004541] [2020-10-26 23:34:03,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:34:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:03,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:03,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:04,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:04,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:04,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:06,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:08,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:08,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 932 [2020-10-26 23:34:08,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:34:08,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-26 23:34:08,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:08,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:34:08,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:34:08,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-26 23:34:08,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:08,936 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:34:08,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:34:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:08,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:08,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:08,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:34:08,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:08,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:34:08,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:08,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:08,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:08,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:08,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:08,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:34:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:08,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:09,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:09,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:34:09,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:09,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:34:09,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:09,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:09,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:09,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:09,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:09,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:34:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:09,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:09,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:09,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:34:09,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:09,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:34:09,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:09,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:09,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:09,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:09,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:09,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:34:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:09,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:09,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:09,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:34:09,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:09,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:34:09,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:09,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:09,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:09,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:09,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:09,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:34:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:09,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:09,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:09,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:34:09,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:09,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-26 23:34:09,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:09,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:34:09,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:09,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:34:09,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:09,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:34:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:09,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:09,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:09,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:34:09,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:09,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 23:34:09,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:09,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:34:09,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:09,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:34:09,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:09,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2020-10-26 23:34:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:09,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:09,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:09,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:34:09,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:09,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:34:09,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:09,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:09,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-26 23:34:09,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:09,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:09,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 701 [2020-10-26 23:34:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:09,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:09,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:09,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:34:09,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:09,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:34:09,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:09,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:09,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:34:09,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:09,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:09,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 774 [2020-10-26 23:34:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:09,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:09,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:09,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:34:09,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:09,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:34:09,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:09,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:09,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-26 23:34:09,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:09,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:09,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2885 backedges. 800 proven. 242 refuted. 0 times theorem prover too weak. 1843 trivial. 0 not checked. [2020-10-26 23:34:09,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467004541] [2020-10-26 23:34:09,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:34:09,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:34:09,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169216356] [2020-10-26 23:34:09,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:34:09,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:34:09,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:34:09,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:34:09,982 INFO L87 Difference]: Start difference. First operand 6996 states and 7738 transitions. Second operand 7 states. [2020-10-26 23:34:11,471 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:34:12,683 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:34:13,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:34:13,359 INFO L93 Difference]: Finished difference Result 13818 states and 15316 transitions. [2020-10-26 23:34:13,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:34:13,361 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 906 [2020-10-26 23:34:13,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:34:13,380 INFO L225 Difference]: With dead ends: 13818 [2020-10-26 23:34:13,381 INFO L226 Difference]: Without dead ends: 7194 [2020-10-26 23:34:13,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:34:13,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7194 states. [2020-10-26 23:34:13,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7194 to 6996. [2020-10-26 23:34:13,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6996 states. [2020-10-26 23:34:13,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6996 states to 6996 states and 7736 transitions. [2020-10-26 23:34:13,529 INFO L78 Accepts]: Start accepts. Automaton has 6996 states and 7736 transitions. Word has length 906 [2020-10-26 23:34:13,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:34:13,530 INFO L481 AbstractCegarLoop]: Abstraction has 6996 states and 7736 transitions. [2020-10-26 23:34:13,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:34:13,530 INFO L276 IsEmpty]: Start isEmpty. Operand 6996 states and 7736 transitions. [2020-10-26 23:34:13,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 925 [2020-10-26 23:34:13,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:34:13,544 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:34:13,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 23:34:13,545 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:34:13,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:34:13,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1842960998, now seen corresponding path program 1 times [2020-10-26 23:34:13,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:34:13,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905132048] [2020-10-26 23:34:13,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:34:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:13,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:13,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:18,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:18,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 950 [2020-10-26 23:34:18,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:34:18,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5102 [2020-10-26 23:34:18,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:18,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:34:18,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:34:18,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-26 23:34:18,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:19,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:34:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:19,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:19,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:19,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:34:19,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:19,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:34:19,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:19,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:19,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:19,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:19,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:19,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:34:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:19,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:19,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:19,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:34:19,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:19,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:34:19,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:19,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:19,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:19,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:19,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:19,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:34:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:19,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:19,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:19,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:34:19,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:19,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:34:19,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:19,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:19,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:19,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:19,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:19,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:34:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:19,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:19,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:19,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:34:19,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:19,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:34:19,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:19,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:19,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:19,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:19,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:19,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:34:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:19,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:19,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:19,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:34:19,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:19,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:34:19,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:19,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:19,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:19,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:19,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:19,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:34:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:19,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:19,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:19,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:34:19,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:19,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:34:19,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:19,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:19,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:19,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:19,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:19,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:34:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:19,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:19,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:19,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:34:19,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:19,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:34:19,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:19,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:34:19,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:19,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:34:19,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:19,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:34:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:19,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:19,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:19,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:34:19,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:19,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-26 23:34:19,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:19,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:34:19,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:19,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:34:19,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:19,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2020-10-26 23:34:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:19,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:19,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:19,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:19,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:34:19,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:34:19,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-26 23:34:19,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:19,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:34:19,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:19,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:34:19,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:21,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2900 backedges. 1466 proven. 68 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:34:21,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905132048] [2020-10-26 23:34:21,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:34:21,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:34:21,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477220328] [2020-10-26 23:34:21,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:34:21,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:34:21,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:34:21,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:34:21,064 INFO L87 Difference]: Start difference. First operand 6996 states and 7736 transitions. Second operand 10 states. [2020-10-26 23:34:21,234 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:34:21,630 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-26 23:34:23,499 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-26 23:34:24,223 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-26 23:34:26,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:34:26,013 INFO L93 Difference]: Finished difference Result 15171 states and 16966 transitions. [2020-10-26 23:34:26,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 23:34:26,015 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 924 [2020-10-26 23:34:26,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:34:26,040 INFO L225 Difference]: With dead ends: 15171 [2020-10-26 23:34:26,040 INFO L226 Difference]: Without dead ends: 8512 [2020-10-26 23:34:26,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2020-10-26 23:34:26,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8512 states. [2020-10-26 23:34:26,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8512 to 8112. [2020-10-26 23:34:26,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8112 states. [2020-10-26 23:34:26,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8112 states to 8112 states and 9106 transitions. [2020-10-26 23:34:26,210 INFO L78 Accepts]: Start accepts. Automaton has 8112 states and 9106 transitions. Word has length 924 [2020-10-26 23:34:26,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:34:26,211 INFO L481 AbstractCegarLoop]: Abstraction has 8112 states and 9106 transitions. [2020-10-26 23:34:26,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:34:26,212 INFO L276 IsEmpty]: Start isEmpty. Operand 8112 states and 9106 transitions. [2020-10-26 23:34:26,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2020-10-26 23:34:26,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:34:26,225 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:34:26,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 23:34:26,226 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:34:26,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:34:26,226 INFO L82 PathProgramCache]: Analyzing trace with hash -54918908, now seen corresponding path program 1 times [2020-10-26 23:34:26,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:34:26,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92345550] [2020-10-26 23:34:26,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:34:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:26,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:26,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:29,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:30,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:30,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:31,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:31,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 983 [2020-10-26 23:34:31,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:34:31,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5178 [2020-10-26 23:34:31,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:31,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:34:31,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:34:31,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-26 23:34:31,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:31,809 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:34:31,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:34:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:31,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:31,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:31,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:34:31,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:31,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:34:31,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:31,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:31,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:31,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:31,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:31,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:34:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:31,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:31,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:31,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:34:31,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:31,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:34:31,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:31,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:31,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:31,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:31,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:31,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:34:31,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:31,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:31,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:31,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:34:31,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:31,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:34:31,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:31,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:31,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:31,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:31,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:31,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:34:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:31,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:31,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:31,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:34:31,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:31,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:34:31,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:31,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:31,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:31,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:31,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:31,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:34:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:31,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:31,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:31,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:34:31,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:31,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:34:31,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:31,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:31,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:31,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:31,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:31,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:34:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:31,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:32,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:32,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:34:32,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:32,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:34:32,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:32,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:32,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:32,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:32,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:32,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:34:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:32,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:32,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:32,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:34:32,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:32,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:34:32,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:32,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:34:32,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:32,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:34:32,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:32,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:34:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:32,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:32,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:32,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 23:34:32,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:32,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-26 23:34:32,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:32,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:34:32,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:32,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-26 23:34:32,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:32,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 825 [2020-10-26 23:34:32,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:32,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:32,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:32,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:32,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:34:32,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:34:32,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-26 23:34:32,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:32,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:34:32,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:32,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:34:32,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:33,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2936 backedges. 1502 proven. 68 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:34:33,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92345550] [2020-10-26 23:34:33,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:34:33,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:34:33,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099961090] [2020-10-26 23:34:33,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:34:33,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:34:33,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:34:33,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:34:33,590 INFO L87 Difference]: Start difference. First operand 8112 states and 9106 transitions. Second operand 9 states. [2020-10-26 23:34:33,740 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:34:34,116 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-26 23:34:35,862 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-26 23:34:36,727 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-26 23:34:38,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:34:38,155 INFO L93 Difference]: Finished difference Result 16285 states and 18308 transitions. [2020-10-26 23:34:38,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 23:34:38,157 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 957 [2020-10-26 23:34:38,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:34:38,179 INFO L225 Difference]: With dead ends: 16285 [2020-10-26 23:34:38,180 INFO L226 Difference]: Without dead ends: 8512 [2020-10-26 23:34:38,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-10-26 23:34:38,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8512 states. [2020-10-26 23:34:38,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8512 to 8112. [2020-10-26 23:34:38,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8112 states. [2020-10-26 23:34:38,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8112 states to 8112 states and 9097 transitions. [2020-10-26 23:34:38,354 INFO L78 Accepts]: Start accepts. Automaton has 8112 states and 9097 transitions. Word has length 957 [2020-10-26 23:34:38,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:34:38,355 INFO L481 AbstractCegarLoop]: Abstraction has 8112 states and 9097 transitions. [2020-10-26 23:34:38,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:34:38,355 INFO L276 IsEmpty]: Start isEmpty. Operand 8112 states and 9097 transitions. [2020-10-26 23:34:38,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 959 [2020-10-26 23:34:38,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:34:38,371 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:34:38,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 23:34:38,371 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:34:38,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:34:38,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1012547998, now seen corresponding path program 1 times [2020-10-26 23:34:38,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:34:38,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065986587] [2020-10-26 23:34:38,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:34:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:38,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:39,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:42,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:42,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:43,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:43,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:43,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 984 [2020-10-26 23:34:43,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:34:43,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-26 23:34:43,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:43,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:34:43,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:34:43,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-26 23:34:43,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:43,905 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:34:43,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:34:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:43,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:43,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:43,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:34:43,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:43,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:34:43,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:43,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:43,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:43,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:43,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:43,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:34:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:43,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:43,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:43,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:34:43,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:43,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:34:43,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:43,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:43,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:43,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:43,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:43,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:34:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:43,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:43,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:43,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:34:43,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:43,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:34:43,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:43,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:43,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:43,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:43,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:44,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:34:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:44,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:44,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:44,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:34:44,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:44,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:34:44,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:44,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:44,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:44,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:44,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:44,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:34:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:44,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:44,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:44,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:34:44,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:44,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:34:44,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:44,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:44,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:44,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:44,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:44,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:34:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:44,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:44,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:44,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:34:44,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:44,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:34:44,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:44,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:44,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:44,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:44,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:44,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:34:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:44,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:44,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:44,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:34:44,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:44,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:34:44,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:44,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:34:44,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:44,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:34:44,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:44,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:34:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:44,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:44,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:44,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 23:34:44,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:44,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-26 23:34:44,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:44,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:34:44,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:44,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 23:34:44,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:44,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 826 [2020-10-26 23:34:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:44,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:44,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:44,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:44,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:34:44,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:34:44,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 23:34:44,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:44,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:34:44,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:44,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:34:44,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:45,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2937 backedges. 1503 proven. 68 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:34:45,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065986587] [2020-10-26 23:34:45,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:34:45,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:34:45,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833126324] [2020-10-26 23:34:45,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:34:45,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:34:45,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:34:45,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:34:45,453 INFO L87 Difference]: Start difference. First operand 8112 states and 9097 transitions. Second operand 9 states. [2020-10-26 23:34:45,614 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:34:46,011 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 77