/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:12:43,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:12:43,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:12:44,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:12:44,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:12:44,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:12:44,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:12:44,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:12:44,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:12:44,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:12:44,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:12:44,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:12:44,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:12:44,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:12:44,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:12:44,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:12:44,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:12:44,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:12:44,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:12:44,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:12:44,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:12:44,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:12:44,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:12:44,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:12:44,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:12:44,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:12:44,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:12:44,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:12:44,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:12:44,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:12:44,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:12:44,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:12:44,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:12:44,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:12:44,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:12:44,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:12:44,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:12:44,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:12:44,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:12:44,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:12:44,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:12:44,054 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 [2020-08-18 20:12:44,076 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:12:44,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:12:44,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:12:44,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:12:44,078 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:12:44,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:12:44,079 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:12:44,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:12:44,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:12:44,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:12:44,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:12:44,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:12:44,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:12:44,080 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:12:44,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:12:44,081 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:12:44,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:12:44,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:12:44,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:12:44,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:12:44,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:12:44,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:12:44,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:12:44,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:12:44,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:12:44,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:12:44,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:12:44,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:12:44,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:12:44,083 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; [2020-08-18 20:12:44,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:12:44,409 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:12:44,415 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:12:44,416 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:12:44,417 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:12:44,419 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c [2020-08-18 20:12:44,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b649682f5/365f94b991604234848da1495fdc228d/FLAG5e1f6863b [2020-08-18 20:12:45,023 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:12:45,024 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c [2020-08-18 20:12:45,042 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b649682f5/365f94b991604234848da1495fdc228d/FLAG5e1f6863b [2020-08-18 20:12:45,316 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b649682f5/365f94b991604234848da1495fdc228d [2020-08-18 20:12:45,325 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:12:45,326 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:12:45,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:12:45,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:12:45,332 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:12:45,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:12:45" (1/1) ... [2020-08-18 20:12:45,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72dcb5c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:12:45, skipping insertion in model container [2020-08-18 20:12:45,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:12:45" (1/1) ... [2020-08-18 20:12:45,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:12:45,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:12:45,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:12:45,742 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:12:45,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:12:46,021 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:12:46,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:12:46 WrapperNode [2020-08-18 20:12:46,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:12:46,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:12:46,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:12:46,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:12:46,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:12:46" (1/1) ... [2020-08-18 20:12:46,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:12:46" (1/1) ... [2020-08-18 20:12:46,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:12:46" (1/1) ... [2020-08-18 20:12:46,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:12:46" (1/1) ... [2020-08-18 20:12:46,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:12:46" (1/1) ... [2020-08-18 20:12:46,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:12:46" (1/1) ... [2020-08-18 20:12:46,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:12:46" (1/1) ... [2020-08-18 20:12:46,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:12:46,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:12:46,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:12:46,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:12:46,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:12:46" (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 [2020-08-18 20:12:46,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:12:46,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:12:46,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 20:12:46,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 20:12:46,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 20:12:46,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 20:12:46,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 20:12:46,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 20:12:46,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 20:12:46,206 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 20:12:46,207 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 20:12:46,207 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 20:12:46,207 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 20:12:46,207 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:12:46,207 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 20:12:46,208 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 20:12:46,208 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 20:12:46,208 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 20:12:46,209 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 20:12:46,209 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 20:12:46,209 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 20:12:46,209 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 20:12:46,209 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 20:12:46,209 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 20:12:46,209 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 20:12:46,210 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 20:12:46,210 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 20:12:46,211 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 20:12:46,211 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 20:12:46,211 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 20:12:46,212 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 20:12:46,212 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 20:12:46,212 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 20:12:46,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 20:12:46,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 20:12:46,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 20:12:46,213 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 20:12:46,213 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 20:12:46,213 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 20:12:46,213 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 20:12:46,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 20:12:46,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:12:46,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:12:46,214 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 20:12:46,214 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 20:12:46,214 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:12:46,216 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:12:46,216 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 20:12:46,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:12:46,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:12:46,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:12:46,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:12:46,217 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 20:12:46,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:12:46,218 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 20:12:46,218 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 20:12:46,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:12:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 20:12:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 20:12:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:12:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 20:12:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 20:12:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 20:12:46,220 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 20:12:46,220 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 20:12:46,220 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 20:12:46,220 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 20:12:46,220 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 20:12:46,220 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 20:12:46,220 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 20:12:46,221 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 20:12:46,221 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 20:12:46,222 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 20:12:46,222 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 20:12:46,222 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:12:46,223 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 20:12:46,223 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 20:12:46,224 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 20:12:46,224 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 20:12:46,224 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 20:12:46,224 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 20:12:46,224 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 20:12:46,224 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 20:12:46,225 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 20:12:46,225 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 20:12:46,225 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 20:12:46,225 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 20:12:46,225 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 20:12:46,225 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 20:12:46,225 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 20:12:46,226 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 20:12:46,226 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 20:12:46,226 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 20:12:46,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:12:46,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 20:12:46,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:12:47,303 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:12:47,303 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 20:12:47,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:12:47 BoogieIcfgContainer [2020-08-18 20:12:47,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:12:47,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:12:47,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:12:47,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:12:47,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:12:45" (1/3) ... [2020-08-18 20:12:47,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f376033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:12:47, skipping insertion in model container [2020-08-18 20:12:47,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:12:46" (2/3) ... [2020-08-18 20:12:47,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f376033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:12:47, skipping insertion in model container [2020-08-18 20:12:47,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:12:47" (3/3) ... [2020-08-18 20:12:47,324 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product43.cil.c [2020-08-18 20:12:47,335 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:12:47,346 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:12:47,362 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:12:47,392 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:12:47,392 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:12:47,392 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:12:47,392 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:12:47,392 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:12:47,393 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:12:47,393 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:12:47,393 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:12:47,416 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-08-18 20:12:47,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 20:12:47,426 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:12:47,428 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:12:47,428 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:12:47,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:12:47,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1951083148, now seen corresponding path program 1 times [2020-08-18 20:12:47,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:12:47,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173686040] [2020-08-18 20:12:47,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:12:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:48,170 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:12:48,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:12:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:48,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:12:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:48,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:12:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:48,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:12:48,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:48,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:12:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:48,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:12:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:48,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:12:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:48,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:12:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:48,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:12:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:48,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 20:12:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:48,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 20:12:48,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173686040] [2020-08-18 20:12:48,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:12:48,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:12:48,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712308368] [2020-08-18 20:12:48,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:12:48,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:12:48,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:12:48,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:12:48,308 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 4 states. [2020-08-18 20:12:49,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:12:49,534 INFO L93 Difference]: Finished difference Result 308 states and 391 transitions. [2020-08-18 20:12:49,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 20:12:49,539 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 20:12:49,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:12:49,564 INFO L225 Difference]: With dead ends: 308 [2020-08-18 20:12:49,564 INFO L226 Difference]: Without dead ends: 170 [2020-08-18 20:12:49,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:12:49,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-18 20:12:49,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 139. [2020-08-18 20:12:49,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-18 20:12:49,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 161 transitions. [2020-08-18 20:12:49,748 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 161 transitions. Word has length 59 [2020-08-18 20:12:49,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:12:49,749 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 161 transitions. [2020-08-18 20:12:49,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:12:49,749 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 161 transitions. [2020-08-18 20:12:49,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 20:12:49,766 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:12:49,766 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:12:49,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:12:49,767 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:12:49,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:12:49,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1220523940, now seen corresponding path program 1 times [2020-08-18 20:12:49,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:12:49,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869214458] [2020-08-18 20:12:49,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:12:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:50,132 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:12:50,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:12:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:50,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:12:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:50,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:12:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:50,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:12:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:50,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:12:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:50,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:12:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:50,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:12:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:50,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:12:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:50,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 20:12:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:50,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 20:12:50,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:50,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 20:12:50,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869214458] [2020-08-18 20:12:50,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:12:50,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:12:50,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837510952] [2020-08-18 20:12:50,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:12:50,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:12:50,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:12:50,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:12:50,195 INFO L87 Difference]: Start difference. First operand 139 states and 161 transitions. Second operand 5 states. [2020-08-18 20:12:50,644 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:12:51,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:12:51,444 INFO L93 Difference]: Finished difference Result 244 states and 293 transitions. [2020-08-18 20:12:51,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 20:12:51,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-18 20:12:51,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:12:51,448 INFO L225 Difference]: With dead ends: 244 [2020-08-18 20:12:51,449 INFO L226 Difference]: Without dead ends: 160 [2020-08-18 20:12:51,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 20:12:51,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-18 20:12:51,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 130. [2020-08-18 20:12:51,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-18 20:12:51,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2020-08-18 20:12:51,490 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 60 [2020-08-18 20:12:51,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:12:51,491 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2020-08-18 20:12:51,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:12:51,491 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2020-08-18 20:12:51,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 20:12:51,493 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:12:51,493 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:12:51,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:12:51,494 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:12:51,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:12:51,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1125066517, now seen corresponding path program 1 times [2020-08-18 20:12:51,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:12:51,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306711941] [2020-08-18 20:12:51,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:12:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:51,855 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:12:51,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:12:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:51,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:12:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:51,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:12:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:51,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:12:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:51,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:12:51,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:51,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:12:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:51,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:12:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:51,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:12:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:51,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 20:12:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:51,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 20:12:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:52,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 20:12:52,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306711941] [2020-08-18 20:12:52,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:12:52,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:12:52,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462481354] [2020-08-18 20:12:52,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:12:52,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:12:52,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:12:52,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:12:52,014 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand 9 states. [2020-08-18 20:12:52,396 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:12:52,705 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:12:52,979 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:12:53,214 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:12:54,105 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:12:55,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:12:55,642 INFO L93 Difference]: Finished difference Result 435 states and 529 transitions. [2020-08-18 20:12:55,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 20:12:55,643 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-18 20:12:55,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:12:55,648 INFO L225 Difference]: With dead ends: 435 [2020-08-18 20:12:55,648 INFO L226 Difference]: Without dead ends: 333 [2020-08-18 20:12:55,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 20:12:55,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-08-18 20:12:55,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 268. [2020-08-18 20:12:55,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-18 20:12:55,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 318 transitions. [2020-08-18 20:12:55,712 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 318 transitions. Word has length 64 [2020-08-18 20:12:55,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:12:55,713 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 318 transitions. [2020-08-18 20:12:55,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:12:55,713 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 318 transitions. [2020-08-18 20:12:55,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 20:12:55,715 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:12:55,715 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:12:55,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:12:55,715 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:12:55,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:12:55,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1836372268, now seen corresponding path program 1 times [2020-08-18 20:12:55,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:12:55,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475775416] [2020-08-18 20:12:55,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:12:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:56,032 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:12:56,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:12:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:56,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:12:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:56,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:12:56,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:56,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:12:56,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:56,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:12:56,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:56,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:12:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:56,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:12:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:56,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:12:56,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:56,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:12:56,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:56,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 20:12:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:56,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 20:12:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:56,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 20:12:56,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475775416] [2020-08-18 20:12:56,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:12:56,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:12:56,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837850927] [2020-08-18 20:12:56,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:12:56,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:12:56,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:12:56,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:12:56,177 INFO L87 Difference]: Start difference. First operand 268 states and 318 transitions. Second operand 9 states. [2020-08-18 20:12:56,544 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:12:57,179 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:12:58,043 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:12:58,281 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:12:58,557 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:12:58,818 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:12:59,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:12:59,298 INFO L93 Difference]: Finished difference Result 679 states and 862 transitions. [2020-08-18 20:12:59,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 20:12:59,299 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-18 20:12:59,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:12:59,305 INFO L225 Difference]: With dead ends: 679 [2020-08-18 20:12:59,305 INFO L226 Difference]: Without dead ends: 439 [2020-08-18 20:12:59,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 20:12:59,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-08-18 20:12:59,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 379. [2020-08-18 20:12:59,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-08-18 20:12:59,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 451 transitions. [2020-08-18 20:12:59,394 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 451 transitions. Word has length 70 [2020-08-18 20:12:59,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:12:59,394 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 451 transitions. [2020-08-18 20:12:59,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:12:59,395 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 451 transitions. [2020-08-18 20:12:59,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-18 20:12:59,397 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:12:59,397 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:12:59,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:12:59,398 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:12:59,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:12:59,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1329110427, now seen corresponding path program 1 times [2020-08-18 20:12:59,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:12:59,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950067976] [2020-08-18 20:12:59,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:12:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,700 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:12:59,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:12:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:12:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:12:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:12:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:12:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:12:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:12:59,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:12:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:12:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:12:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:12:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:12:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:12:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:12:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:12:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 20:12:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 20:12:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,924 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 20:12:59,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950067976] [2020-08-18 20:12:59,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:12:59,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:12:59,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891974912] [2020-08-18 20:12:59,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:12:59,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:12:59,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:12:59,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:12:59,928 INFO L87 Difference]: Start difference. First operand 379 states and 451 transitions. Second operand 9 states. [2020-08-18 20:13:00,388 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:13:01,344 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:13:01,591 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:13:01,882 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:13:02,151 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:13:03,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:13:03,440 INFO L93 Difference]: Finished difference Result 1185 states and 1563 transitions. [2020-08-18 20:13:03,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 20:13:03,441 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-08-18 20:13:03,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:13:03,451 INFO L225 Difference]: With dead ends: 1185 [2020-08-18 20:13:03,451 INFO L226 Difference]: Without dead ends: 834 [2020-08-18 20:13:03,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-18 20:13:03,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-08-18 20:13:03,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 717. [2020-08-18 20:13:03,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2020-08-18 20:13:03,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 858 transitions. [2020-08-18 20:13:03,631 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 858 transitions. Word has length 102 [2020-08-18 20:13:03,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:13:03,632 INFO L479 AbstractCegarLoop]: Abstraction has 717 states and 858 transitions. [2020-08-18 20:13:03,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:13:03,632 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 858 transitions. [2020-08-18 20:13:03,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-18 20:13:03,635 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:13:03,635 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:13:03,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:13:03,636 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:13:03,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:13:03,636 INFO L82 PathProgramCache]: Analyzing trace with hash 359529404, now seen corresponding path program 1 times [2020-08-18 20:13:03,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:13:03,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914194570] [2020-08-18 20:13:03,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:13:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:03,954 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:13:03,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:03,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:13:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:03,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:13:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:03,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:13:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:03,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:13:03,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:03,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:13:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:03,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:13:03,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:03,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:03,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:03,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:13:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:04,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:13:04,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:04,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:04,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:13:04,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:04,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:04,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:04,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:04,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:04,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:13:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:04,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 20:13:04,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:04,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 20:13:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:04,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 20:13:04,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914194570] [2020-08-18 20:13:04,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:13:04,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:13:04,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082955569] [2020-08-18 20:13:04,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:13:04,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:13:04,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:13:04,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:13:04,069 INFO L87 Difference]: Start difference. First operand 717 states and 858 transitions. Second operand 9 states. [2020-08-18 20:13:05,092 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:13:05,352 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:13:05,633 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:13:05,874 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:13:06,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:13:06,552 INFO L93 Difference]: Finished difference Result 1536 states and 1964 transitions. [2020-08-18 20:13:06,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 20:13:06,553 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-08-18 20:13:06,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:13:06,567 INFO L225 Difference]: With dead ends: 1536 [2020-08-18 20:13:06,567 INFO L226 Difference]: Without dead ends: 847 [2020-08-18 20:13:06,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:13:06,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-08-18 20:13:06,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 737. [2020-08-18 20:13:06,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737 states. [2020-08-18 20:13:06,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 878 transitions. [2020-08-18 20:13:06,703 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 878 transitions. Word has length 102 [2020-08-18 20:13:06,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:13:06,705 INFO L479 AbstractCegarLoop]: Abstraction has 737 states and 878 transitions. [2020-08-18 20:13:06,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:13:06,706 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 878 transitions. [2020-08-18 20:13:06,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-18 20:13:06,711 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:13:06,712 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:13:06,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:13:06,713 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:13:06,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:13:06,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1689858438, now seen corresponding path program 1 times [2020-08-18 20:13:06,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:13:06,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979051263] [2020-08-18 20:13:06,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:13:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:06,998 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:13:06,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:07,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:07,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:13:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:07,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:13:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:07,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:13:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:07,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:13:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:07,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:13:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:07,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:13:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:07,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:07,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:07,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:13:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:07,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:13:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:07,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:07,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:07,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:13:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:07,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:07,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:07,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:13:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:07,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 20:13:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:07,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 20:13:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:07,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 20:13:07,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979051263] [2020-08-18 20:13:07,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:13:07,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 20:13:07,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683470857] [2020-08-18 20:13:07,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 20:13:07,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:13:07,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 20:13:07,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 20:13:07,184 INFO L87 Difference]: Start difference. First operand 737 states and 878 transitions. Second operand 11 states. [2020-08-18 20:13:07,709 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:13:07,951 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:13:08,184 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:13:08,900 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:13:09,181 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:13:09,428 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:13:10,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:13:10,312 INFO L93 Difference]: Finished difference Result 1360 states and 1702 transitions. [2020-08-18 20:13:10,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 20:13:10,312 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2020-08-18 20:13:10,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:13:10,318 INFO L225 Difference]: With dead ends: 1360 [2020-08-18 20:13:10,318 INFO L226 Difference]: Without dead ends: 651 [2020-08-18 20:13:10,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 20:13:10,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2020-08-18 20:13:10,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 578. [2020-08-18 20:13:10,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-08-18 20:13:10,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 674 transitions. [2020-08-18 20:13:10,426 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 674 transitions. Word has length 102 [2020-08-18 20:13:10,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:13:10,427 INFO L479 AbstractCegarLoop]: Abstraction has 578 states and 674 transitions. [2020-08-18 20:13:10,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 20:13:10,427 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 674 transitions. [2020-08-18 20:13:10,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-08-18 20:13:10,431 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:13:10,431 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:13:10,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 20:13:10,431 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:13:10,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:13:10,432 INFO L82 PathProgramCache]: Analyzing trace with hash -764679949, now seen corresponding path program 1 times [2020-08-18 20:13:10,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:13:10,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956973346] [2020-08-18 20:13:10,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:13:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:10,884 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:13:10,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:10,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:13:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:10,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:13:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:10,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:13:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:10,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:13:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:10,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:13:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:10,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:13:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:10,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 20:13:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:10,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:11,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 20:13:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:11,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:13:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:11,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:11,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:13:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:11,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:11,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:11,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:11,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:13:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:11,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 20:13:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:11,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 20:13:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:11,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 20:13:11,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956973346] [2020-08-18 20:13:11,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:13:11,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 20:13:11,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424494104] [2020-08-18 20:13:11,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 20:13:11,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:13:11,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 20:13:11,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:13:11,101 INFO L87 Difference]: Start difference. First operand 578 states and 674 transitions. Second operand 12 states. [2020-08-18 20:13:11,693 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:13:12,307 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:13:12,943 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:13:13,276 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:13:13,532 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:13:13,813 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:13:14,072 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:13:15,473 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:13:15,855 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:13:16,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:13:16,436 INFO L93 Difference]: Finished difference Result 1691 states and 2129 transitions. [2020-08-18 20:13:16,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 20:13:16,439 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 106 [2020-08-18 20:13:16,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:13:16,447 INFO L225 Difference]: With dead ends: 1691 [2020-08-18 20:13:16,447 INFO L226 Difference]: Without dead ends: 1313 [2020-08-18 20:13:16,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 20:13:16,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2020-08-18 20:13:16,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1197. [2020-08-18 20:13:16,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-08-18 20:13:16,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1399 transitions. [2020-08-18 20:13:16,628 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1399 transitions. Word has length 106 [2020-08-18 20:13:16,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:13:16,629 INFO L479 AbstractCegarLoop]: Abstraction has 1197 states and 1399 transitions. [2020-08-18 20:13:16,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 20:13:16,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1399 transitions. [2020-08-18 20:13:16,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-18 20:13:16,632 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:13:16,633 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:13:16,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 20:13:16,633 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:13:16,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:13:16,634 INFO L82 PathProgramCache]: Analyzing trace with hash -60868023, now seen corresponding path program 1 times [2020-08-18 20:13:16,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:13:16,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939248618] [2020-08-18 20:13:16,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:13:16,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:16,956 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:13:16,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:16,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:16,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:13:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:16,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:13:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:16,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:13:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:16,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:13:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:13:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:13:17,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:13:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:13:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:13:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:13:17,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:13:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 20:13:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-18 20:13:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 20:13:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 20:13:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:13:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-18 20:13:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-18 20:13:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,231 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-18 20:13:17,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939248618] [2020-08-18 20:13:17,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:13:17,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 20:13:17,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046436974] [2020-08-18 20:13:17,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 20:13:17,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:13:17,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 20:13:17,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 20:13:17,234 INFO L87 Difference]: Start difference. First operand 1197 states and 1399 transitions. Second operand 16 states. [2020-08-18 20:13:17,725 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:13:18,072 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 20:13:18,333 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 20:13:18,591 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 20:13:19,197 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:13:19,484 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:13:19,859 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 20:13:20,172 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 20:13:21,257 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:13:21,716 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:13:22,007 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:13:22,332 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:13:22,805 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 20:13:23,299 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 20:13:23,553 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:13:23,809 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:13:24,076 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:13:24,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:13:24,541 INFO L93 Difference]: Finished difference Result 2225 states and 2688 transitions. [2020-08-18 20:13:24,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-18 20:13:24,542 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 149 [2020-08-18 20:13:24,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:13:24,550 INFO L225 Difference]: With dead ends: 2225 [2020-08-18 20:13:24,550 INFO L226 Difference]: Without dead ends: 1222 [2020-08-18 20:13:24,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=548, Invalid=2002, Unknown=0, NotChecked=0, Total=2550 [2020-08-18 20:13:24,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2020-08-18 20:13:24,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1102. [2020-08-18 20:13:24,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-08-18 20:13:24,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1268 transitions. [2020-08-18 20:13:24,815 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1268 transitions. Word has length 149 [2020-08-18 20:13:24,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:13:24,815 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1268 transitions. [2020-08-18 20:13:24,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 20:13:24,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1268 transitions. [2020-08-18 20:13:24,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-08-18 20:13:24,822 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:13:24,823 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:13:24,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 20:13:24,823 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:13:24,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:13:24,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1576976523, now seen corresponding path program 1 times [2020-08-18 20:13:24,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:13:24,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233847669] [2020-08-18 20:13:24,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:13:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,144 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:13:25,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:13:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:13:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:13:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:13:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:13:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:13:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:13:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:13:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:13:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:13:25,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:13:25,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 20:13:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 20:13:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:13:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 20:13:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:13:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:13:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-08-18 20:13:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:25,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:13:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 20:13:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:13:25,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:13:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-18 20:13:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-18 20:13:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:13:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-18 20:13:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-18 20:13:25,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:13:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:13:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:13:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-08-18 20:13:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-18 20:13:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,846 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 104 proven. 48 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2020-08-18 20:13:25,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233847669] [2020-08-18 20:13:25,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:13:25,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 20:13:25,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645163040] [2020-08-18 20:13:25,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 20:13:25,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:13:25,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 20:13:25,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-08-18 20:13:25,850 INFO L87 Difference]: Start difference. First operand 1102 states and 1268 transitions. Second operand 16 states. [2020-08-18 20:13:27,701 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:13:28,049 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:13:28,272 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:13:28,524 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:13:29,650 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:13:31,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:13:31,456 INFO L93 Difference]: Finished difference Result 3031 states and 3632 transitions. [2020-08-18 20:13:31,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-18 20:13:31,457 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 302 [2020-08-18 20:13:31,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:13:31,467 INFO L225 Difference]: With dead ends: 3031 [2020-08-18 20:13:31,468 INFO L226 Difference]: Without dead ends: 1752 [2020-08-18 20:13:31,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=333, Invalid=1073, Unknown=0, NotChecked=0, Total=1406 [2020-08-18 20:13:31,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2020-08-18 20:13:31,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1430. [2020-08-18 20:13:31,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1430 states. [2020-08-18 20:13:31,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 1674 transitions. [2020-08-18 20:13:31,795 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 1674 transitions. Word has length 302 [2020-08-18 20:13:31,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:13:31,795 INFO L479 AbstractCegarLoop]: Abstraction has 1430 states and 1674 transitions. [2020-08-18 20:13:31,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 20:13:31,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 1674 transitions. [2020-08-18 20:13:31,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-08-18 20:13:31,806 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:13:31,807 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 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, 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] [2020-08-18 20:13:31,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 20:13:31,807 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:13:31,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:13:31,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1865964208, now seen corresponding path program 1 times [2020-08-18 20:13:31,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:13:31,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893627773] [2020-08-18 20:13:31,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:13:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,154 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:13:32,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:13:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:13:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:13:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:13:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:13:32,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:13:32,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:13:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:13:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:13:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:13:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:13:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 20:13:32,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 20:13:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:32,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:13:32,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 20:13:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:13:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:13:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:13:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-18 20:13:32,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:13:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 20:13:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:13:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:13:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-18 20:13:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-08-18 20:13:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:13:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-18 20:13:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 20:13:32,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:13:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:13:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:13:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-18 20:13:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-08-18 20:13:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:32,665 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 111 proven. 44 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2020-08-18 20:13:32,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893627773] [2020-08-18 20:13:32,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:13:32,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 20:13:32,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80793091] [2020-08-18 20:13:32,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 20:13:32,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:13:32,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 20:13:32,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-08-18 20:13:32,667 INFO L87 Difference]: Start difference. First operand 1430 states and 1674 transitions. Second operand 17 states. [2020-08-18 20:13:33,473 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:13:33,788 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:13:34,039 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:13:34,278 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:13:34,909 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:13:35,924 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:13:36,168 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:13:36,636 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:13:37,345 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:13:38,011 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:13:38,269 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:13:39,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:13:39,052 INFO L93 Difference]: Finished difference Result 2555 states and 3056 transitions. [2020-08-18 20:13:39,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-18 20:13:39,053 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 308 [2020-08-18 20:13:39,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:13:39,062 INFO L225 Difference]: With dead ends: 2555 [2020-08-18 20:13:39,062 INFO L226 Difference]: Without dead ends: 1457 [2020-08-18 20:13:39,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=370, Invalid=1436, Unknown=0, NotChecked=0, Total=1806 [2020-08-18 20:13:39,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2020-08-18 20:13:39,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1403. [2020-08-18 20:13:39,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1403 states. [2020-08-18 20:13:39,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 1626 transitions. [2020-08-18 20:13:39,298 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 1626 transitions. Word has length 308 [2020-08-18 20:13:39,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:13:39,298 INFO L479 AbstractCegarLoop]: Abstraction has 1403 states and 1626 transitions. [2020-08-18 20:13:39,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 20:13:39,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 1626 transitions. [2020-08-18 20:13:39,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-08-18 20:13:39,307 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:13:39,308 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:13:39,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 20:13:39,308 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:13:39,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:13:39,308 INFO L82 PathProgramCache]: Analyzing trace with hash 2055130084, now seen corresponding path program 1 times [2020-08-18 20:13:39,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:13:39,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880557493] [2020-08-18 20:13:39,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:13:39,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,579 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:13:39,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:13:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:13:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:13:39,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:13:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:13:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:13:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:13:39,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:39,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:13:39,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:13:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:13:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:13:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 20:13:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 20:13:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:13:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 20:13:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:13:39,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:13:39,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:13:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-18 20:13:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:39,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:39,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:13:39,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 20:13:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:13:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:13:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:39,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-08-18 20:13:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-08-18 20:13:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:13:39,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:39,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-18 20:13:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-08-18 20:13:39,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:13:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:39,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:13:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:13:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-18 20:13:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-08-18 20:13:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:39,815 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 82 proven. 4 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-08-18 20:13:39,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880557493] [2020-08-18 20:13:39,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:13:39,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 20:13:39,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846654672] [2020-08-18 20:13:39,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:13:39,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:13:39,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:13:39,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:13:39,817 INFO L87 Difference]: Start difference. First operand 1403 states and 1626 transitions. Second operand 9 states. [2020-08-18 20:13:40,676 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189