/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 14:02:43,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 14:02:43,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 14:02:43,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 14:02:43,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 14:02:43,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 14:02:43,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 14:02:43,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 14:02:43,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 14:02:43,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 14:02:43,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 14:02:43,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 14:02:43,114 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 14:02:43,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 14:02:43,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 14:02:43,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 14:02:43,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 14:02:43,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 14:02:43,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 14:02:43,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 14:02:43,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 14:02:43,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 14:02:43,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 14:02:43,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 14:02:43,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 14:02:43,150 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 14:02:43,150 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 14:02:43,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 14:02:43,152 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 14:02:43,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 14:02:43,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 14:02:43,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 14:02:43,161 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 14:02:43,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 14:02:43,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 14:02:43,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 14:02:43,167 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 14:02:43,167 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 14:02:43,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 14:02:43,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 14:02:43,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 14:02:43,170 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 [2020-08-21 14:02:43,197 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 14:02:43,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 14:02:43,199 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 14:02:43,199 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 14:02:43,199 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 14:02:43,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 14:02:43,199 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 14:02:43,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 14:02:43,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 14:02:43,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 14:02:43,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 14:02:43,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 14:02:43,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 14:02:43,201 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 14:02:43,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 14:02:43,201 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 14:02:43,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 14:02:43,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 14:02:43,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 14:02:43,202 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 14:02:43,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 14:02:43,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:02:43,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 14:02:43,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 14:02:43,203 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 14:02:43,203 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 14:02:43,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 14:02:43,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 14:02:43,204 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 14:02:43,204 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 -> log-additional-information=true; [2020-08-21 14:02:43,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 14:02:43,492 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 14:02:43,495 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 14:02:43,497 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 14:02:43,497 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 14:02:43,498 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c [2020-08-21 14:02:43,570 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/994531a8f/ee7569368c294dc98be35db3f41dc39d/FLAG809d46c37 [2020-08-21 14:02:44,143 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 14:02:44,144 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c [2020-08-21 14:02:44,172 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/994531a8f/ee7569368c294dc98be35db3f41dc39d/FLAG809d46c37 [2020-08-21 14:02:44,449 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/994531a8f/ee7569368c294dc98be35db3f41dc39d [2020-08-21 14:02:44,460 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 14:02:44,461 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 14:02:44,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 14:02:44,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 14:02:44,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 14:02:44,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:02:44" (1/1) ... [2020-08-21 14:02:44,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64fec7e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:02:44, skipping insertion in model container [2020-08-21 14:02:44,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:02:44" (1/1) ... [2020-08-21 14:02:44,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 14:02:44,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 14:02:44,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:02:44,986 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 14:02:45,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:02:45,138 INFO L208 MainTranslator]: Completed translation [2020-08-21 14:02:45,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:02:45 WrapperNode [2020-08-21 14:02:45,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 14:02:45,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 14:02:45,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 14:02:45,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 14:02:45,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:02:45" (1/1) ... [2020-08-21 14:02:45,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:02:45" (1/1) ... [2020-08-21 14:02:45,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:02:45" (1/1) ... [2020-08-21 14:02:45,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:02:45" (1/1) ... [2020-08-21 14:02:45,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:02:45" (1/1) ... [2020-08-21 14:02:45,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:02:45" (1/1) ... [2020-08-21 14:02:45,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:02:45" (1/1) ... [2020-08-21 14:02:45,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 14:02:45,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 14:02:45,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 14:02:45,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 14:02:45,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:02:45" (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 [2020-08-21 14:02:45,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 14:02:45,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 14:02:45,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 14:02:45,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 14:02:45,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 14:02:45,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 14:02:45,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 14:02:45,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 14:02:45,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 14:02:45,302 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 14:02:45,303 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 14:02:45,303 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 14:02:45,303 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 14:02:45,303 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 14:02:45,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 14:02:45,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 14:02:45,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 14:02:45,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 14:02:45,305 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 14:02:45,305 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 14:02:45,306 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 14:02:45,306 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 14:02:45,306 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 14:02:45,307 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 14:02:45,308 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 14:02:45,309 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 14:02:45,309 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 14:02:45,310 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 14:02:45,310 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 14:02:45,310 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 14:02:45,310 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 14:02:45,311 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 14:02:45,311 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 14:02:45,311 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 14:02:45,311 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 14:02:45,311 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 14:02:45,311 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 14:02:45,312 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 14:02:45,312 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 14:02:45,312 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 14:02:45,312 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 14:02:45,312 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 14:02:45,313 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 14:02:45,313 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 14:02:45,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 14:02:45,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 14:02:45,314 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 14:02:45,315 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 14:02:45,315 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 14:02:45,315 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 14:02:45,315 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 14:02:45,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 14:02:45,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 14:02:45,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 14:02:45,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 14:02:45,316 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 14:02:45,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 14:02:45,316 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 14:02:45,317 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 14:02:45,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 14:02:45,317 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 14:02:45,317 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 14:02:45,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 14:02:45,318 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 14:02:45,318 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 14:02:45,318 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 14:02:45,318 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 14:02:45,318 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 14:02:45,318 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 14:02:45,318 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 14:02:45,319 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 14:02:45,319 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 14:02:45,320 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 14:02:45,320 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 14:02:45,320 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 14:02:45,321 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 14:02:45,321 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 14:02:45,322 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 14:02:45,322 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 14:02:45,322 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 14:02:45,322 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 14:02:45,322 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 14:02:45,322 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 14:02:45,323 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 14:02:45,323 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 14:02:45,323 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 14:02:45,323 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 14:02:45,323 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 14:02:45,323 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 14:02:45,323 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 14:02:45,324 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 14:02:45,324 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 14:02:45,324 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 14:02:45,324 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 14:02:45,324 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 14:02:45,324 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 14:02:45,324 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 14:02:45,325 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 14:02:45,325 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 14:02:45,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 14:02:45,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 14:02:45,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 14:02:46,402 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 14:02:46,403 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 14:02:46,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:02:46 BoogieIcfgContainer [2020-08-21 14:02:46,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 14:02:46,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 14:02:46,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 14:02:46,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 14:02:46,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 02:02:44" (1/3) ... [2020-08-21 14:02:46,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33231964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:02:46, skipping insertion in model container [2020-08-21 14:02:46,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:02:45" (2/3) ... [2020-08-21 14:02:46,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33231964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:02:46, skipping insertion in model container [2020-08-21 14:02:46,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:02:46" (3/3) ... [2020-08-21 14:02:46,416 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product52.cil.c [2020-08-21 14:02:46,427 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 14:02:46,435 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 14:02:46,451 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 14:02:46,476 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 14:02:46,476 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 14:02:46,476 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 14:02:46,476 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 14:02:46,477 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 14:02:46,477 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 14:02:46,477 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 14:02:46,477 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 14:02:46,500 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states. [2020-08-21 14:02:46,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 14:02:46,511 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:02:46,512 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] [2020-08-21 14:02:46,512 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:02:46,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:02:46,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1089631799, now seen corresponding path program 1 times [2020-08-21 14:02:46,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:02:46,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685122173] [2020-08-21 14:02:46,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:02:46,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:47,217 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:02:47,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:47,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:02:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:47,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:02:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:47,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:02:47,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:47,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:02:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:47,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:02:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:47,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:02:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:47,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:47,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 14:02:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:47,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 14:02:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:47,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 14:02:47,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685122173] [2020-08-21 14:02:47,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:02:47,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 14:02:47,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720256855] [2020-08-21 14:02:47,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 14:02:47,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:02:47,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 14:02:47,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 14:02:47,391 INFO L87 Difference]: Start difference. First operand 191 states. Second operand 4 states. [2020-08-21 14:02:48,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:02:48,603 INFO L93 Difference]: Finished difference Result 328 states and 422 transitions. [2020-08-21 14:02:48,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 14:02:48,606 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 14:02:48,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:02:48,621 INFO L225 Difference]: With dead ends: 328 [2020-08-21 14:02:48,622 INFO L226 Difference]: Without dead ends: 181 [2020-08-21 14:02:48,627 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 [2020-08-21 14:02:48,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-08-21 14:02:48,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 148. [2020-08-21 14:02:48,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-21 14:02:48,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 174 transitions. [2020-08-21 14:02:48,725 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 174 transitions. Word has length 59 [2020-08-21 14:02:48,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:02:48,726 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 174 transitions. [2020-08-21 14:02:48,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 14:02:48,726 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 174 transitions. [2020-08-21 14:02:48,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 14:02:48,733 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:02:48,733 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] [2020-08-21 14:02:48,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 14:02:48,737 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:02:48,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:02:48,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1975382983, now seen corresponding path program 1 times [2020-08-21 14:02:48,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:02:48,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623465079] [2020-08-21 14:02:48,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:02:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:49,109 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:02:49,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:49,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:02:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:49,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:02:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:49,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:02:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:49,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:02:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:49,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:02:49,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:49,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 14:02:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:49,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:49,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 14:02:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:49,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 14:02:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:49,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 14:02:49,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623465079] [2020-08-21 14:02:49,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:02:49,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 14:02:49,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416341874] [2020-08-21 14:02:49,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 14:02:49,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:02:49,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 14:02:49,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 14:02:49,175 INFO L87 Difference]: Start difference. First operand 148 states and 174 transitions. Second operand 5 states. [2020-08-21 14:02:49,658 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:02:50,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:02:50,562 INFO L93 Difference]: Finished difference Result 263 states and 322 transitions. [2020-08-21 14:02:50,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 14:02:50,563 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-21 14:02:50,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:02:50,566 INFO L225 Difference]: With dead ends: 263 [2020-08-21 14:02:50,566 INFO L226 Difference]: Without dead ends: 171 [2020-08-21 14:02:50,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 14:02:50,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-08-21 14:02:50,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 139. [2020-08-21 14:02:50,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-21 14:02:50,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 162 transitions. [2020-08-21 14:02:50,629 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 162 transitions. Word has length 60 [2020-08-21 14:02:50,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:02:50,629 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 162 transitions. [2020-08-21 14:02:50,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 14:02:50,630 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 162 transitions. [2020-08-21 14:02:50,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 14:02:50,631 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:02:50,632 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] [2020-08-21 14:02:50,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 14:02:50,632 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:02:50,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:02:50,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1007889166, now seen corresponding path program 1 times [2020-08-21 14:02:50,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:02:50,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180114943] [2020-08-21 14:02:50,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:02:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:50,952 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:02:50,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:51,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:02:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:51,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:02:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:51,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:02:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:51,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:02:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:51,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:02:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:51,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:02:51,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:51,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:51,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 14:02:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:51,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 14:02:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:51,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 14:02:51,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180114943] [2020-08-21 14:02:51,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:02:51,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 14:02:51,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655439539] [2020-08-21 14:02:51,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 14:02:51,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:02:51,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 14:02:51,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 14:02:51,085 INFO L87 Difference]: Start difference. First operand 139 states and 162 transitions. Second operand 9 states. [2020-08-21 14:02:51,465 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:02:51,819 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:02:52,066 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:02:52,313 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:02:53,252 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:02:55,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:02:55,156 INFO L93 Difference]: Finished difference Result 466 states and 577 transitions. [2020-08-21 14:02:55,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 14:02:55,160 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-21 14:02:55,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:02:55,165 INFO L225 Difference]: With dead ends: 466 [2020-08-21 14:02:55,165 INFO L226 Difference]: Without dead ends: 355 [2020-08-21 14:02:55,167 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 [2020-08-21 14:02:55,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-08-21 14:02:55,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 294. [2020-08-21 14:02:55,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-08-21 14:02:55,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 356 transitions. [2020-08-21 14:02:55,236 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 356 transitions. Word has length 65 [2020-08-21 14:02:55,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:02:55,237 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 356 transitions. [2020-08-21 14:02:55,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 14:02:55,237 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 356 transitions. [2020-08-21 14:02:55,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 14:02:55,239 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:02:55,239 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] [2020-08-21 14:02:55,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 14:02:55,240 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:02:55,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:02:55,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1025318737, now seen corresponding path program 1 times [2020-08-21 14:02:55,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:02:55,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399938885] [2020-08-21 14:02:55,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:02:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:55,539 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:02:55,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:55,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:02:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:55,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:02:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:55,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:02:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:55,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:02:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:55,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:02:55,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:55,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:02:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:55,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 14:02:55,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:55,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:55,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:55,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 14:02:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:55,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:02:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:55,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 14:02:55,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399938885] [2020-08-21 14:02:55,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:02:55,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 14:02:55,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896551508] [2020-08-21 14:02:55,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 14:02:55,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:02:55,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 14:02:55,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 14:02:55,641 INFO L87 Difference]: Start difference. First operand 294 states and 356 transitions. Second operand 9 states. [2020-08-21 14:02:56,009 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:02:56,767 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:02:57,579 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:02:57,908 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:02:58,168 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:02:58,435 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:02:59,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:02:59,246 INFO L93 Difference]: Finished difference Result 755 states and 986 transitions. [2020-08-21 14:02:59,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 14:02:59,247 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-21 14:02:59,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:02:59,253 INFO L225 Difference]: With dead ends: 755 [2020-08-21 14:02:59,254 INFO L226 Difference]: Without dead ends: 489 [2020-08-21 14:02:59,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 14:02:59,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2020-08-21 14:02:59,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 421. [2020-08-21 14:02:59,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-08-21 14:02:59,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 507 transitions. [2020-08-21 14:02:59,384 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 507 transitions. Word has length 70 [2020-08-21 14:02:59,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:02:59,384 INFO L479 AbstractCegarLoop]: Abstraction has 421 states and 507 transitions. [2020-08-21 14:02:59,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 14:02:59,385 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 507 transitions. [2020-08-21 14:02:59,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 14:02:59,387 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:02:59,387 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] [2020-08-21 14:02:59,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 14:02:59,387 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:02:59,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:02:59,388 INFO L82 PathProgramCache]: Analyzing trace with hash -2085443903, now seen corresponding path program 1 times [2020-08-21 14:02:59,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:02:59,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124291194] [2020-08-21 14:02:59,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:02:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:59,666 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:02:59,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:59,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:02:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:59,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:02:59,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:59,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:02:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:59,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:02:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:59,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:02:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:59,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:02:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:59,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:02:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:59,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 14:02:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:59,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:02:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:59,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:02:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:59,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:02:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:59,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:02:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:59,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 14:02:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:59,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 14:02:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:02:59,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 14:02:59,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124291194] [2020-08-21 14:02:59,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:02:59,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 14:02:59,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610179137] [2020-08-21 14:02:59,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 14:02:59,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:02:59,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 14:02:59,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 14:02:59,864 INFO L87 Difference]: Start difference. First operand 421 states and 507 transitions. Second operand 9 states. [2020-08-21 14:03:01,079 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:03:01,343 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 14:03:01,594 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:03:01,826 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:03:02,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:03:02,586 INFO L93 Difference]: Finished difference Result 903 states and 1149 transitions. [2020-08-21 14:03:02,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 14:03:02,587 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-21 14:03:02,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:03:02,591 INFO L225 Difference]: With dead ends: 903 [2020-08-21 14:03:02,592 INFO L226 Difference]: Without dead ends: 510 [2020-08-21 14:03:02,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 14:03:02,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2020-08-21 14:03:02,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 434. [2020-08-21 14:03:02,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2020-08-21 14:03:02,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 521 transitions. [2020-08-21 14:03:02,739 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 521 transitions. Word has length 93 [2020-08-21 14:03:02,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:03:02,740 INFO L479 AbstractCegarLoop]: Abstraction has 434 states and 521 transitions. [2020-08-21 14:03:02,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 14:03:02,740 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 521 transitions. [2020-08-21 14:03:02,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 14:03:02,742 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:03:02,742 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] [2020-08-21 14:03:02,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 14:03:02,743 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:03:02,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:03:02,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1383844029, now seen corresponding path program 1 times [2020-08-21 14:03:02,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:03:02,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505697215] [2020-08-21 14:03:02,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:03:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:02,986 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:03:02,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:03,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:03:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:03,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:03:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:03,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:03:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:03,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:03:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:03,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:03:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:03,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:03:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:03,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:03,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 14:03:03,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:03,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:03,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:03,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:03,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:03,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:03,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:03:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:03,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 14:03:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:03,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 14:03:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:03,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 14:03:03,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505697215] [2020-08-21 14:03:03,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:03:03,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 14:03:03,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103107727] [2020-08-21 14:03:03,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 14:03:03,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:03:03,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 14:03:03,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 14:03:03,163 INFO L87 Difference]: Start difference. First operand 434 states and 521 transitions. Second operand 11 states. [2020-08-21 14:03:03,819 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:03:04,060 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:03:04,304 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:03:05,109 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:03:05,373 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:03:05,615 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:03:06,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:03:06,503 INFO L93 Difference]: Finished difference Result 930 states and 1198 transitions. [2020-08-21 14:03:06,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 14:03:06,504 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-21 14:03:06,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:03:06,508 INFO L225 Difference]: With dead ends: 930 [2020-08-21 14:03:06,508 INFO L226 Difference]: Without dead ends: 524 [2020-08-21 14:03:06,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 14:03:06,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2020-08-21 14:03:06,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 442. [2020-08-21 14:03:06,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-08-21 14:03:06,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 529 transitions. [2020-08-21 14:03:06,619 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 529 transitions. Word has length 93 [2020-08-21 14:03:06,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:03:06,619 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 529 transitions. [2020-08-21 14:03:06,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 14:03:06,620 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 529 transitions. [2020-08-21 14:03:06,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 14:03:06,621 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:03:06,621 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] [2020-08-21 14:03:06,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 14:03:06,622 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:03:06,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:03:06,622 INFO L82 PathProgramCache]: Analyzing trace with hash 341636868, now seen corresponding path program 1 times [2020-08-21 14:03:06,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:03:06,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978807328] [2020-08-21 14:03:06,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:03:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:06,861 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:03:06,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:06,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:06,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:03:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:06,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:03:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:06,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:03:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:06,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:03:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:06,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:03:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:06,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:03:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:06,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:06,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 14:03:06,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:06,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:06,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:07,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:07,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:03:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:07,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 14:03:07,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:07,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 14:03:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:07,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 14:03:07,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978807328] [2020-08-21 14:03:07,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:03:07,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 14:03:07,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556448938] [2020-08-21 14:03:07,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 14:03:07,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:03:07,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 14:03:07,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 14:03:07,030 INFO L87 Difference]: Start difference. First operand 442 states and 529 transitions. Second operand 7 states. [2020-08-21 14:03:07,346 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:03:07,921 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:03:09,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:03:09,870 INFO L93 Difference]: Finished difference Result 1411 states and 1828 transitions. [2020-08-21 14:03:09,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 14:03:09,871 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-08-21 14:03:09,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:03:09,880 INFO L225 Difference]: With dead ends: 1411 [2020-08-21 14:03:09,881 INFO L226 Difference]: Without dead ends: 997 [2020-08-21 14:03:09,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 14:03:09,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-08-21 14:03:10,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 919. [2020-08-21 14:03:10,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2020-08-21 14:03:10,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1115 transitions. [2020-08-21 14:03:10,120 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1115 transitions. Word has length 93 [2020-08-21 14:03:10,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:03:10,121 INFO L479 AbstractCegarLoop]: Abstraction has 919 states and 1115 transitions. [2020-08-21 14:03:10,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 14:03:10,121 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1115 transitions. [2020-08-21 14:03:10,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 14:03:10,125 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:03:10,126 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] [2020-08-21 14:03:10,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 14:03:10,126 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:03:10,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:03:10,127 INFO L82 PathProgramCache]: Analyzing trace with hash -643321942, now seen corresponding path program 1 times [2020-08-21 14:03:10,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:03:10,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125432603] [2020-08-21 14:03:10,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:03:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:10,554 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:03:10,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:10,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:03:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:10,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:03:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:10,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:03:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:10,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:03:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:10,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:03:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:10,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:03:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:10,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 14:03:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:10,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:10,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 14:03:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:10,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:10,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:10,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:10,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:03:10,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:10,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 14:03:10,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:10,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:03:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:10,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 14:03:10,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125432603] [2020-08-21 14:03:10,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:03:10,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 14:03:10,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448604482] [2020-08-21 14:03:10,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 14:03:10,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:03:10,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 14:03:10,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 14:03:10,715 INFO L87 Difference]: Start difference. First operand 919 states and 1115 transitions. Second operand 12 states. [2020-08-21 14:03:11,432 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:03:12,094 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:03:12,778 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:03:13,099 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:03:13,340 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:03:13,617 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:03:13,880 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:03:16,038 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:03:16,315 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:03:16,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:03:16,858 INFO L93 Difference]: Finished difference Result 2611 states and 3380 transitions. [2020-08-21 14:03:16,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 14:03:16,862 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-08-21 14:03:16,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:03:16,874 INFO L225 Difference]: With dead ends: 2611 [2020-08-21 14:03:16,874 INFO L226 Difference]: Without dead ends: 1912 [2020-08-21 14:03:16,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 14:03:16,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2020-08-21 14:03:17,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1606. [2020-08-21 14:03:17,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-08-21 14:03:17,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 1936 transitions. [2020-08-21 14:03:17,167 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 1936 transitions. Word has length 97 [2020-08-21 14:03:17,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:03:17,168 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 1936 transitions. [2020-08-21 14:03:17,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 14:03:17,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 1936 transitions. [2020-08-21 14:03:17,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-21 14:03:17,171 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:03:17,172 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:03:17,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 14:03:17,172 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:03:17,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:03:17,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1477147143, now seen corresponding path program 1 times [2020-08-21 14:03:17,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:03:17,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208253118] [2020-08-21 14:03:17,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:03:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:17,511 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:03:17,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:17,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:03:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:17,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:03:17,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:17,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:03:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:17,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:03:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:17,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:03:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:17,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:03:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:17,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 14:03:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:17,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:17,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:17,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 14:03:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:17,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:17,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:17,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:17,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:03:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:17,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:03:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:17,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:17,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 14:03:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:17,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:17,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 14:03:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:17,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 14:03:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:17,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:17,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:17,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 14:03:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:17,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:17,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:17,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-21 14:03:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:17,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 14:03:17,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:17,789 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 14:03:17,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208253118] [2020-08-21 14:03:17,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:03:17,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 14:03:17,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450532345] [2020-08-21 14:03:17,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 14:03:17,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:03:17,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 14:03:17,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 14:03:17,791 INFO L87 Difference]: Start difference. First operand 1606 states and 1936 transitions. Second operand 16 states. [2020-08-21 14:03:18,323 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:03:18,659 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 14:03:18,917 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 14:03:19,172 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 14:03:19,877 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:03:20,170 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:03:20,534 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 14:03:20,843 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 14:03:21,953 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:03:22,665 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:03:22,959 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:03:23,297 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:03:23,846 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:03:24,227 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:03:24,594 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 14:03:25,380 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:03:25,684 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 14:03:26,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:03:26,477 INFO L93 Difference]: Finished difference Result 3483 states and 4326 transitions. [2020-08-21 14:03:26,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-21 14:03:26,478 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 159 [2020-08-21 14:03:26,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:03:26,491 INFO L225 Difference]: With dead ends: 3483 [2020-08-21 14:03:26,492 INFO L226 Difference]: Without dead ends: 2085 [2020-08-21 14:03:26,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=589, Invalid=2167, Unknown=0, NotChecked=0, Total=2756 [2020-08-21 14:03:26,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2085 states. [2020-08-21 14:03:27,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2085 to 1893. [2020-08-21 14:03:27,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1893 states. [2020-08-21 14:03:27,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 2238 transitions. [2020-08-21 14:03:27,011 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 2238 transitions. Word has length 159 [2020-08-21 14:03:27,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:03:27,011 INFO L479 AbstractCegarLoop]: Abstraction has 1893 states and 2238 transitions. [2020-08-21 14:03:27,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 14:03:27,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 2238 transitions. [2020-08-21 14:03:27,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-08-21 14:03:27,025 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:03:27,025 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:03:27,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 14:03:27,026 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:03:27,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:03:27,026 INFO L82 PathProgramCache]: Analyzing trace with hash 430621663, now seen corresponding path program 1 times [2020-08-21 14:03:27,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:03:27,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220421624] [2020-08-21 14:03:27,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:03:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,332 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:03:27,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:27,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:03:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:03:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:03:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:03:27,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:03:27,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:03:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 14:03:27,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 14:03:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:03:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:03:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 14:03:27,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:03:27,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 14:03:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 14:03:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 14:03:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-21 14:03:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:27,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:03:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 14:03:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:27,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 14:03:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 14:03:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 14:03:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-21 14:03:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:03:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-08-21 14:03:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-21 14:03:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:27,800 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 83 proven. 29 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-08-21 14:03:27,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220421624] [2020-08-21 14:03:27,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:03:27,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 14:03:27,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832874389] [2020-08-21 14:03:27,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 14:03:27,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:03:27,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 14:03:27,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 14:03:27,802 INFO L87 Difference]: Start difference. First operand 1893 states and 2238 transitions. Second operand 15 states. [2020-08-21 14:03:29,362 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:03:29,637 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:03:29,920 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:03:30,168 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:03:31,225 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:03:33,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:03:33,060 INFO L93 Difference]: Finished difference Result 5185 states and 6381 transitions. [2020-08-21 14:03:33,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 14:03:33,061 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 277 [2020-08-21 14:03:33,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:03:33,078 INFO L225 Difference]: With dead ends: 5185 [2020-08-21 14:03:33,078 INFO L226 Difference]: Without dead ends: 3002 [2020-08-21 14:03:33,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 97 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-21 14:03:33,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3002 states. [2020-08-21 14:03:33,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3002 to 2604. [2020-08-21 14:03:33,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2604 states. [2020-08-21 14:03:33,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2604 states to 2604 states and 3157 transitions. [2020-08-21 14:03:33,611 INFO L78 Accepts]: Start accepts. Automaton has 2604 states and 3157 transitions. Word has length 277 [2020-08-21 14:03:33,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:03:33,612 INFO L479 AbstractCegarLoop]: Abstraction has 2604 states and 3157 transitions. [2020-08-21 14:03:33,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 14:03:33,612 INFO L276 IsEmpty]: Start isEmpty. Operand 2604 states and 3157 transitions. [2020-08-21 14:03:33,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-08-21 14:03:33,623 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:03:33,623 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 14:03:33,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 14:03:33,624 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:03:33,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:03:33,624 INFO L82 PathProgramCache]: Analyzing trace with hash 154824420, now seen corresponding path program 1 times [2020-08-21 14:03:33,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:03:33,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992924579] [2020-08-21 14:03:33,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:03:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:33,927 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:03:33,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:33,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:03:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:33,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:03:33,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:33,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:03:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:33,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:03:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:33,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:03:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:33,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:03:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 14:03:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 14:03:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:03:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:03:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 14:03:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:34,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:03:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 14:03:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 14:03:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 14:03:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 14:03:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-21 14:03:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:03:34,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 14:03:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 14:03:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 14:03:34,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-21 14:03:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:03:34,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-08-21 14:03:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:03:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:03:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:03:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-21 14:03:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 14:03:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:03:34,407 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 90 proven. 36 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-08-21 14:03:34,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992924579] [2020-08-21 14:03:34,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:03:34,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 14:03:34,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416431258] [2020-08-21 14:03:34,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 14:03:34,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:03:34,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 14:03:34,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-21 14:03:34,414 INFO L87 Difference]: Start difference. First operand 2604 states and 3157 transitions. Second operand 16 states. [2020-08-21 14:03:35,110 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:03:35,425 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:03:35,678 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:03:35,916 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:03:36,606 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:03:37,638 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:03:37,939 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:03:38,183 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:03:38,829 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:03:39,707 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:03:39,973 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:03:41,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:03:41,042 INFO L93 Difference]: Finished difference Result 4984 states and 6131 transitions. [2020-08-21 14:03:41,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 14:03:41,043 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 283 [2020-08-21 14:03:41,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:03:41,060 INFO L225 Difference]: With dead ends: 4984 [2020-08-21 14:03:41,060 INFO L226 Difference]: Without dead ends: 2611 [2020-08-21 14:03:41,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-21 14:03:41,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2020-08-21 14:03:41,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2535. [2020-08-21 14:03:41,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2535 states. [2020-08-21 14:03:41,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2535 states to 2535 states and 3048 transitions. [2020-08-21 14:03:41,624 INFO L78 Accepts]: Start accepts. Automaton has 2535 states and 3048 transitions. Word has length 283 [2020-08-21 14:03:41,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:03:41,629 INFO L479 AbstractCegarLoop]: Abstraction has 2535 states and 3048 transitions. [2020-08-21 14:03:41,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 14:03:41,629 INFO L276 IsEmpty]: Start isEmpty. Operand 2535 states and 3048 transitions. [2020-08-21 14:03:41,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-08-21 14:03:41,643 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:03:41,643 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 14:03:41,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 14:03:41,644 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:03:41,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:03:41,644 INFO L82 PathProgramCache]: Analyzing trace with hash -344117058, now seen corresponding path program 1 times [2020-08-21 14:03:41,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:03:41,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566768468] [2020-08-21 14:03:41,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:03:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat