/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --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_spec4_product48.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:03:15,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:03:15,137 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:03:15,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:03:15,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:03:15,180 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:03:15,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:03:15,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:03:15,188 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:03:15,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:03:15,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:03:15,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:03:15,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:03:15,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:03:15,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:03:15,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:03:15,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:03:15,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:03:15,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:03:15,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:03:15,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:03:15,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:03:15,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:03:15,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:03:15,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:03:15,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:03:15,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:03:15,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:03:15,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:03:15,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 22:03:15,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:03:15,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:03:15,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:03:15,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:03:15,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:03:15,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:03:15,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:03:15,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:03:15,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:03:15,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:03:15,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:03:15,249 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 22:03:15,291 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:03:15,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:03:15,292 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:03:15,292 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:03:15,293 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:03:15,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:03:15,293 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:03:15,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:03:15,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:03:15,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:03:15,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:03:15,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:03:15,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:03:15,296 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:03:15,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:03:15,296 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:03:15,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:03:15,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:03:15,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:03:15,297 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:03:15,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:03:15,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:03:15,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:03:15,298 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:03:15,298 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:03:15,298 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:03:15,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:03:15,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:03:15,299 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:03:15,299 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 22:03:15,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:03:15,588 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:03:15,591 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:03:15,593 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:03:15,593 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:03:15,594 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product48.cil.c [2020-08-21 22:03:15,669 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ff1dbe41/aaab7fbab9014cdcb3448d1cf1dbe84b/FLAGbd9a27d95 [2020-08-21 22:03:16,191 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:03:16,192 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product48.cil.c [2020-08-21 22:03:16,205 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ff1dbe41/aaab7fbab9014cdcb3448d1cf1dbe84b/FLAGbd9a27d95 [2020-08-21 22:03:16,493 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ff1dbe41/aaab7fbab9014cdcb3448d1cf1dbe84b [2020-08-21 22:03:16,503 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:03:16,504 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:03:16,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:03:16,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:03:16,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:03:16,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:03:16" (1/1) ... [2020-08-21 22:03:16,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@694adced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:03:16, skipping insertion in model container [2020-08-21 22:03:16,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:03:16" (1/1) ... [2020-08-21 22:03:16,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:03:16,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:03:16,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:03:16,988 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:03:17,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:03:17,143 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:03:17,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:03:17 WrapperNode [2020-08-21 22:03:17,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:03:17,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:03:17,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:03:17,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:03:17,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:03:17" (1/1) ... [2020-08-21 22:03:17,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:03:17" (1/1) ... [2020-08-21 22:03:17,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:03:17" (1/1) ... [2020-08-21 22:03:17,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:03:17" (1/1) ... [2020-08-21 22:03:17,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:03:17" (1/1) ... [2020-08-21 22:03:17,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:03:17" (1/1) ... [2020-08-21 22:03:17,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:03:17" (1/1) ... [2020-08-21 22:03:17,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:03:17,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:03:17,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:03:17,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:03:17,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:03:17" (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 22:03:17,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:03:17,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:03:17,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 22:03:17,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 22:03:17,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 22:03:17,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 22:03:17,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 22:03:17,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 22:03:17,328 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 22:03:17,328 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 22:03:17,328 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 22:03:17,328 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 22:03:17,328 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 22:03:17,329 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 22:03:17,329 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 22:03:17,329 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:03:17,329 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 22:03:17,329 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 22:03:17,329 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 22:03:17,330 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 22:03:17,330 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 22:03:17,330 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 22:03:17,330 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 22:03:17,330 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 22:03:17,330 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 22:03:17,330 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 22:03:17,331 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 22:03:17,331 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 22:03:17,331 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 22:03:17,331 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 22:03:17,331 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 22:03:17,331 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 22:03:17,332 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 22:03:17,332 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 22:03:17,332 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 22:03:17,332 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 22:03:17,332 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 22:03:17,332 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 22:03:17,332 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 22:03:17,333 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 22:03:17,333 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 22:03:17,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:03:17,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:03:17,333 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 22:03:17,333 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 22:03:17,334 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 22:03:17,334 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 22:03:17,334 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 22:03:17,334 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 22:03:17,334 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 22:03:17,334 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 22:03:17,334 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 22:03:17,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 22:03:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 22:03:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:03:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 22:03:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 22:03:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:03:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 22:03:17,336 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 22:03:17,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:03:17,336 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 22:03:17,336 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 22:03:17,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:03:17,336 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 22:03:17,336 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 22:03:17,337 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 22:03:17,337 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 22:03:17,337 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 22:03:17,337 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 22:03:17,337 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 22:03:17,337 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 22:03:17,337 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 22:03:17,338 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 22:03:17,338 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 22:03:17,338 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 22:03:17,338 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 22:03:17,338 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:03:17,338 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 22:03:17,339 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 22:03:17,339 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 22:03:17,339 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 22:03:17,339 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 22:03:17,339 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 22:03:17,339 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 22:03:17,339 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 22:03:17,340 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 22:03:17,340 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 22:03:17,340 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 22:03:17,340 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 22:03:17,340 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 22:03:17,340 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 22:03:17,340 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 22:03:17,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:03:17,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 22:03:17,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:03:18,363 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:03:18,364 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 22:03:18,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:03:18 BoogieIcfgContainer [2020-08-21 22:03:18,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:03:18,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:03:18,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:03:18,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:03:18,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:03:16" (1/3) ... [2020-08-21 22:03:18,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@593260c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:03:18, skipping insertion in model container [2020-08-21 22:03:18,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:03:17" (2/3) ... [2020-08-21 22:03:18,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@593260c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:03:18, skipping insertion in model container [2020-08-21 22:03:18,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:03:18" (3/3) ... [2020-08-21 22:03:18,386 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product48.cil.c [2020-08-21 22:03:18,397 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:03:18,407 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:03:18,421 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:03:18,454 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:03:18,455 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:03:18,455 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:03:18,455 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:03:18,455 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:03:18,456 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:03:18,456 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:03:18,456 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:03:18,477 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-08-21 22:03:18,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 22:03:18,488 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:03:18,489 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:03:18,490 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:03:18,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:03:18,496 INFO L82 PathProgramCache]: Analyzing trace with hash 267821041, now seen corresponding path program 1 times [2020-08-21 22:03:18,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:03:18,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809155110] [2020-08-21 22:03:18,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:03:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:19,184 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:03:19,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:03:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:19,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:03:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:19,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:03:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:19,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:19,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:03:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:19,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:03:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:19,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:03:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:19,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:03:19,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809155110] [2020-08-21 22:03:19,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:03:19,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:03:19,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754206301] [2020-08-21 22:03:19,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:03:19,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:03:19,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:03:19,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:03:19,305 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 3 states. [2020-08-21 22:03:20,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:03:20,560 INFO L93 Difference]: Finished difference Result 332 states and 431 transitions. [2020-08-21 22:03:20,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:03:20,562 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 22:03:20,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:03:20,577 INFO L225 Difference]: With dead ends: 332 [2020-08-21 22:03:20,577 INFO L226 Difference]: Without dead ends: 180 [2020-08-21 22:03:20,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:03:20,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-08-21 22:03:20,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 143. [2020-08-21 22:03:20,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-08-21 22:03:20,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 168 transitions. [2020-08-21 22:03:20,710 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 168 transitions. Word has length 46 [2020-08-21 22:03:20,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:03:20,711 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 168 transitions. [2020-08-21 22:03:20,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:03:20,711 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 168 transitions. [2020-08-21 22:03:20,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 22:03:20,715 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:03:20,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:03:20,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:03:20,716 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:03:20,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:03:20,716 INFO L82 PathProgramCache]: Analyzing trace with hash -395653053, now seen corresponding path program 1 times [2020-08-21 22:03:20,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:03:20,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970670255] [2020-08-21 22:03:20,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:03:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:21,094 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:03:21,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:03:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:21,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:03:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:21,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:03:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:21,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:21,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:03:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:21,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:03:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:21,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 22:03:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:21,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:03:21,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970670255] [2020-08-21 22:03:21,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:03:21,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:03:21,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712645570] [2020-08-21 22:03:21,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:03:21,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:03:21,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:03:21,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:03:21,154 INFO L87 Difference]: Start difference. First operand 143 states and 168 transitions. Second operand 4 states. [2020-08-21 22:03:21,579 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:22,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:03:22,513 INFO L93 Difference]: Finished difference Result 255 states and 310 transitions. [2020-08-21 22:03:22,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:03:22,514 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 22:03:22,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:03:22,517 INFO L225 Difference]: With dead ends: 255 [2020-08-21 22:03:22,517 INFO L226 Difference]: Without dead ends: 164 [2020-08-21 22:03:22,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:03:22,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-21 22:03:22,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 134. [2020-08-21 22:03:22,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-21 22:03:22,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 156 transitions. [2020-08-21 22:03:22,560 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 156 transitions. Word has length 47 [2020-08-21 22:03:22,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:03:22,561 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 156 transitions. [2020-08-21 22:03:22,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:03:22,561 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 156 transitions. [2020-08-21 22:03:22,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 22:03:22,563 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:03:22,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:03:22,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:03:22,564 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:03:22,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:03:22,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1814461049, now seen corresponding path program 1 times [2020-08-21 22:03:22,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:03:22,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877610162] [2020-08-21 22:03:22,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:03:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:22,872 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:03:22,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:03:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:22,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:03:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:22,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:03:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:22,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:22,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:03:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:22,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:03:22,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:22,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:03:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:22,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:03:22,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877610162] [2020-08-21 22:03:22,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:03:22,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:03:22,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016534093] [2020-08-21 22:03:22,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:03:22,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:03:22,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:03:22,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:03:22,975 INFO L87 Difference]: Start difference. First operand 134 states and 156 transitions. Second operand 5 states. [2020-08-21 22:03:23,257 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:03:23,915 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:25,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:03:25,606 INFO L93 Difference]: Finished difference Result 459 states and 568 transitions. [2020-08-21 22:03:25,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 22:03:25,607 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-21 22:03:25,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:03:25,612 INFO L225 Difference]: With dead ends: 459 [2020-08-21 22:03:25,612 INFO L226 Difference]: Without dead ends: 349 [2020-08-21 22:03:25,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 22:03:25,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-08-21 22:03:25,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 282. [2020-08-21 22:03:25,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-08-21 22:03:25,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 340 transitions. [2020-08-21 22:03:25,696 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 340 transitions. Word has length 52 [2020-08-21 22:03:25,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:03:25,697 INFO L479 AbstractCegarLoop]: Abstraction has 282 states and 340 transitions. [2020-08-21 22:03:25,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:03:25,697 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 340 transitions. [2020-08-21 22:03:25,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 22:03:25,700 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:03:25,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:03:25,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:03:25,701 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:03:25,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:03:25,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1060505325, now seen corresponding path program 1 times [2020-08-21 22:03:25,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:03:25,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232498888] [2020-08-21 22:03:25,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:03:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:26,110 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:03:26,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:03:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:26,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:03:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:26,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:03:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:26,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:26,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:26,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:03:26,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:26,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:03:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:26,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:03:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:26,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 22:03:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:26,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:03:26,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232498888] [2020-08-21 22:03:26,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:03:26,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 22:03:26,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958528061] [2020-08-21 22:03:26,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 22:03:26,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:03:26,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 22:03:26,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 22:03:26,252 INFO L87 Difference]: Start difference. First operand 282 states and 340 transitions. Second operand 12 states. [2020-08-21 22:03:26,661 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:03:26,956 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:03:27,192 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:03:27,416 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:03:28,002 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:28,734 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:03:29,083 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:03:29,391 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:03:29,679 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:03:30,009 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:03:30,476 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:03:30,847 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:03:31,103 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:03:33,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:03:33,180 INFO L93 Difference]: Finished difference Result 1153 states and 1576 transitions. [2020-08-21 22:03:33,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 22:03:33,187 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-21 22:03:33,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:03:33,202 INFO L225 Difference]: With dead ends: 1153 [2020-08-21 22:03:33,204 INFO L226 Difference]: Without dead ends: 895 [2020-08-21 22:03:33,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-21 22:03:33,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2020-08-21 22:03:33,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 794. [2020-08-21 22:03:33,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-08-21 22:03:33,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1006 transitions. [2020-08-21 22:03:33,390 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1006 transitions. Word has length 57 [2020-08-21 22:03:33,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:03:33,392 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 1006 transitions. [2020-08-21 22:03:33,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 22:03:33,392 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1006 transitions. [2020-08-21 22:03:33,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-21 22:03:33,396 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:03:33,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:03:33,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:03:33,397 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:03:33,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:03:33,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1254258393, now seen corresponding path program 1 times [2020-08-21 22:03:33,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:03:33,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071812968] [2020-08-21 22:03:33,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:03:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:33,741 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:03:33,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:03:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:33,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:03:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:33,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:03:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:33,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:33,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:03:33,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:33,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:03:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:33,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 22:03:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:33,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 22:03:33,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:33,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 22:03:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:33,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:03:33,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071812968] [2020-08-21 22:03:33,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:03:33,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 22:03:33,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396111330] [2020-08-21 22:03:33,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 22:03:33,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:03:33,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 22:03:33,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:03:33,814 INFO L87 Difference]: Start difference. First operand 794 states and 1006 transitions. Second operand 6 states. [2020-08-21 22:03:34,142 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:03:36,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:03:36,038 INFO L93 Difference]: Finished difference Result 1951 states and 2621 transitions. [2020-08-21 22:03:36,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 22:03:36,039 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-21 22:03:36,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:03:36,047 INFO L225 Difference]: With dead ends: 1951 [2020-08-21 22:03:36,048 INFO L226 Difference]: Without dead ends: 1181 [2020-08-21 22:03:36,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-21 22:03:36,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2020-08-21 22:03:36,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1090. [2020-08-21 22:03:36,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1090 states. [2020-08-21 22:03:36,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1352 transitions. [2020-08-21 22:03:36,402 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1352 transitions. Word has length 61 [2020-08-21 22:03:36,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:03:36,402 INFO L479 AbstractCegarLoop]: Abstraction has 1090 states and 1352 transitions. [2020-08-21 22:03:36,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 22:03:36,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1352 transitions. [2020-08-21 22:03:36,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-21 22:03:36,408 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:03:36,409 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:03:36,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 22:03:36,410 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:03:36,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:03:36,410 INFO L82 PathProgramCache]: Analyzing trace with hash 909865268, now seen corresponding path program 1 times [2020-08-21 22:03:36,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:03:36,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981550047] [2020-08-21 22:03:36,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:03:36,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:36,752 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:03:36,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:03:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:36,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:03:36,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:36,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:03:36,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:36,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:36,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:03:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:36,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 22:03:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:36,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:03:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:36,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 22:03:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:36,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:36,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:36,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:36,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 22:03:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:36,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 22:03:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:36,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 22:03:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:36,939 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 22:03:36,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981550047] [2020-08-21 22:03:36,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:03:36,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 22:03:36,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017545264] [2020-08-21 22:03:36,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 22:03:36,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:03:36,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 22:03:36,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-21 22:03:36,942 INFO L87 Difference]: Start difference. First operand 1090 states and 1352 transitions. Second operand 10 states. [2020-08-21 22:03:37,558 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-21 22:03:38,173 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:03:40,398 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:03:42,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:03:42,429 INFO L93 Difference]: Finished difference Result 2091 states and 2705 transitions. [2020-08-21 22:03:42,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 22:03:42,430 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-21 22:03:42,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:03:42,439 INFO L225 Difference]: With dead ends: 2091 [2020-08-21 22:03:42,440 INFO L226 Difference]: Without dead ends: 1310 [2020-08-21 22:03:42,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-21 22:03:42,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2020-08-21 22:03:42,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1197. [2020-08-21 22:03:42,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-08-21 22:03:42,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1463 transitions. [2020-08-21 22:03:42,678 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1463 transitions. Word has length 89 [2020-08-21 22:03:42,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:03:42,681 INFO L479 AbstractCegarLoop]: Abstraction has 1197 states and 1463 transitions. [2020-08-21 22:03:42,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 22:03:42,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1463 transitions. [2020-08-21 22:03:42,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-21 22:03:42,688 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:03:42,688 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:03:42,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 22:03:42,691 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:03:42,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:03:42,692 INFO L82 PathProgramCache]: Analyzing trace with hash -920784732, now seen corresponding path program 1 times [2020-08-21 22:03:42,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:03:42,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864223406] [2020-08-21 22:03:42,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:03:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:42,978 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:03:42,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:03:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:42,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:03:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:42,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:03:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:42,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:42,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:03:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:43,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:03:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:43,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:43,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:43,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:43,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:43,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:43,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:03:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:43,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:43,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:43,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:43,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 22:03:43,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:43,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:43,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 22:03:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:43,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 22:03:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:43,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:43,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:43,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 22:03:43,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:43,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 22:03:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:43,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-21 22:03:43,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:43,190 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-21 22:03:43,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864223406] [2020-08-21 22:03:43,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:03:43,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 22:03:43,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26318182] [2020-08-21 22:03:43,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 22:03:43,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:03:43,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 22:03:43,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 22:03:43,200 INFO L87 Difference]: Start difference. First operand 1197 states and 1463 transitions. Second operand 10 states. [2020-08-21 22:03:44,189 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:44,442 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:03:44,707 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:44,953 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:46,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:03:46,328 INFO L93 Difference]: Finished difference Result 2526 states and 3300 transitions. [2020-08-21 22:03:46,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 22:03:46,329 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 143 [2020-08-21 22:03:46,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:03:46,342 INFO L225 Difference]: With dead ends: 2526 [2020-08-21 22:03:46,342 INFO L226 Difference]: Without dead ends: 1353 [2020-08-21 22:03:46,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 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 22:03:46,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2020-08-21 22:03:46,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 1227. [2020-08-21 22:03:46,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1227 states. [2020-08-21 22:03:46,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1497 transitions. [2020-08-21 22:03:46,610 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1497 transitions. Word has length 143 [2020-08-21 22:03:46,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:03:46,611 INFO L479 AbstractCegarLoop]: Abstraction has 1227 states and 1497 transitions. [2020-08-21 22:03:46,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 22:03:46,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1497 transitions. [2020-08-21 22:03:46,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-21 22:03:46,616 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:03:46,616 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:03:46,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 22:03:46,617 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:03:46,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:03:46,618 INFO L82 PathProgramCache]: Analyzing trace with hash -127940416, now seen corresponding path program 1 times [2020-08-21 22:03:46,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:03:46,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123224579] [2020-08-21 22:03:46,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:03:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:46,999 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:03:47,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:03:47,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:47,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:03:47,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:47,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:03:47,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:47,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:47,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:03:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:47,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:03:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:47,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:47,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:47,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:47,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:47,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:03:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:47,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:47,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:47,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:47,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 22:03:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:47,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:47,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 22:03:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:47,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 22:03:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:47,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 22:03:47,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:47,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:47,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:47,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:47,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 22:03:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:47,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-21 22:03:47,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:47,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-21 22:03:47,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:47,202 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-21 22:03:47,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123224579] [2020-08-21 22:03:47,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:03:47,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 22:03:47,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769252153] [2020-08-21 22:03:47,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 22:03:47,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:03:47,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 22:03:47,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 22:03:47,206 INFO L87 Difference]: Start difference. First operand 1227 states and 1497 transitions. Second operand 12 states. [2020-08-21 22:03:47,708 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:47,918 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:48,145 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:48,835 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:49,076 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:49,326 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:50,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:03:50,485 INFO L93 Difference]: Finished difference Result 2251 states and 2835 transitions. [2020-08-21 22:03:50,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 22:03:50,485 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 147 [2020-08-21 22:03:50,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:03:50,491 INFO L225 Difference]: With dead ends: 2251 [2020-08-21 22:03:50,492 INFO L226 Difference]: Without dead ends: 1048 [2020-08-21 22:03:50,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 22:03:50,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2020-08-21 22:03:50,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 990. [2020-08-21 22:03:50,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 990 states. [2020-08-21 22:03:50,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1192 transitions. [2020-08-21 22:03:50,682 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1192 transitions. Word has length 147 [2020-08-21 22:03:50,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:03:50,683 INFO L479 AbstractCegarLoop]: Abstraction has 990 states and 1192 transitions. [2020-08-21 22:03:50,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 22:03:50,683 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1192 transitions. [2020-08-21 22:03:50,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-21 22:03:50,690 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:03:50,690 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:03:50,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 22:03:50,691 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:03:50,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:03:50,691 INFO L82 PathProgramCache]: Analyzing trace with hash -401491891, now seen corresponding path program 1 times [2020-08-21 22:03:50,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:03:50,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811852237] [2020-08-21 22:03:50,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:03:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:51,020 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:03:51,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:03:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:51,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:03:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:51,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:03:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:51,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:51,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:51,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:03:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:51,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 22:03:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:51,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:03:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:51,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:51,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:51,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:51,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:51,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:03:51,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:51,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:51,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:51,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:51,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 22:03:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:51,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:51,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 22:03:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:51,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 22:03:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:51,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:51,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:51,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:51,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:51,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 22:03:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:51,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-21 22:03:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:51,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-21 22:03:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:51,322 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-08-21 22:03:51,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811852237] [2020-08-21 22:03:51,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:03:51,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 22:03:51,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309359312] [2020-08-21 22:03:51,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 22:03:51,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:03:51,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 22:03:51,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-21 22:03:51,325 INFO L87 Difference]: Start difference. First operand 990 states and 1192 transitions. Second operand 15 states. [2020-08-21 22:03:51,905 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:03:52,809 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:03:54,343 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:03:54,644 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:03:54,895 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:03:55,129 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:03:55,411 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:03:55,649 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:03:56,154 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-21 22:03:56,666 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-21 22:03:57,433 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:03:57,666 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:03:57,928 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:03:58,176 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:03:59,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:03:59,068 INFO L93 Difference]: Finished difference Result 2788 states and 3494 transitions. [2020-08-21 22:03:59,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-21 22:03:59,075 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 147 [2020-08-21 22:03:59,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:03:59,085 INFO L225 Difference]: With dead ends: 2788 [2020-08-21 22:03:59,085 INFO L226 Difference]: Without dead ends: 1822 [2020-08-21 22:03:59,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=264, Invalid=1068, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 22:03:59,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1822 states. [2020-08-21 22:03:59,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1822 to 1717. [2020-08-21 22:03:59,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1717 states. [2020-08-21 22:03:59,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2029 transitions. [2020-08-21 22:03:59,405 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2029 transitions. Word has length 147 [2020-08-21 22:03:59,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:03:59,407 INFO L479 AbstractCegarLoop]: Abstraction has 1717 states and 2029 transitions. [2020-08-21 22:03:59,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 22:03:59,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2029 transitions. [2020-08-21 22:03:59,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-21 22:03:59,414 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:03:59,414 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:03:59,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 22:03:59,415 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:03:59,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:03:59,415 INFO L82 PathProgramCache]: Analyzing trace with hash 628739049, now seen corresponding path program 1 times [2020-08-21 22:03:59,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:03:59,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590928713] [2020-08-21 22:03:59,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:03:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:59,716 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:03:59,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:03:59,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:59,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:03:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:59,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:03:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:59,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:59,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:03:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:59,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 22:03:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:59,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:03:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:59,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:59,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:59,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:59,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:59,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:03:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:59,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:59,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:59,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:03:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:59,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 22:03:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:59,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:59,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 22:03:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:59,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-21 22:03:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:59,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-21 22:03:59,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:59,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:03:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:59,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:03:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:59,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 22:03:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:59,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-21 22:03:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:59,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 22:03:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:03:59,866 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-21 22:03:59,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590928713] [2020-08-21 22:03:59,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:03:59,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 22:03:59,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661691216] [2020-08-21 22:03:59,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 22:03:59,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:03:59,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 22:03:59,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-21 22:03:59,869 INFO L87 Difference]: Start difference. First operand 1717 states and 2029 transitions. Second operand 11 states. [2020-08-21 22:04:00,298 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:04:02,492 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:04:02,716 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:04:02,963 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:04:03,209 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:04:03,453 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:04:04,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:04:04,084 INFO L93 Difference]: Finished difference Result 2048 states and 2598 transitions. [2020-08-21 22:04:04,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 22:04:04,085 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 151 [2020-08-21 22:04:04,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:04:04,096 INFO L225 Difference]: With dead ends: 2048 [2020-08-21 22:04:04,097 INFO L226 Difference]: Without dead ends: 2045 [2020-08-21 22:04:04,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2020-08-21 22:04:04,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2020-08-21 22:04:04,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1717. [2020-08-21 22:04:04,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1717 states. [2020-08-21 22:04:04,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2019 transitions. [2020-08-21 22:04:04,461 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2019 transitions. Word has length 151 [2020-08-21 22:04:04,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:04:04,462 INFO L479 AbstractCegarLoop]: Abstraction has 1717 states and 2019 transitions. [2020-08-21 22:04:04,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 22:04:04,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2019 transitions. [2020-08-21 22:04:04,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-21 22:04:04,467 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:04:04,468 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:04,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 22:04:04,468 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:04:04,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:04:04,468 INFO L82 PathProgramCache]: Analyzing trace with hash -220870584, now seen corresponding path program 1 times [2020-08-21 22:04:04,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:04:04,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091561825] [2020-08-21 22:04:04,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:04:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:04:04,765 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:04:04,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:04:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:04:04,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:04:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:04:04,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:04:04,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:04:04,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:04:04,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:04:04,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:04:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:04:04,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 22:04:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:04:04,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:04:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:04:04,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:04:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:04:04,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:04:04,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:04:04,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:04:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:04:04,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:04:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:04:04,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:04:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:04:04,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:04:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:04:04,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:04:04,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:04:04,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:04:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:04:04,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 22:04:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:04:04,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:04:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:04:04,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 22:04:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:04:04,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 22:04:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:04:04,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:04:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:04:04,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:04:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:04:04,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 22:04:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:04:04,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:04:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:04:04,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-21 22:04:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:04:04,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 22:04:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:04:04,948 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 22:04:04,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091561825] [2020-08-21 22:04:04,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:04:04,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 22:04:04,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098752123] [2020-08-21 22:04:04,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 22:04:04,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:04:04,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 22:04:04,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 22:04:04,950 INFO L87 Difference]: Start difference. First operand 1717 states and 2019 transitions. Second operand 12 states. [2020-08-21 22:04:05,373 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:04:05,935 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:04:06,450 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:04:06,720 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:04:06,969 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:04:07,239 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:04:07,539 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:04:07,799 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:04:09,676 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:04:10,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:04:10,434 INFO L93 Difference]: Finished difference Result 4124 states and 5229 transitions. [2020-08-21 22:04:10,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-21 22:04:10,434 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 151 [2020-08-21 22:04:10,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:04:10,450 INFO L225 Difference]: With dead ends: 4124 [2020-08-21 22:04:10,450 INFO L226 Difference]: Without dead ends: 2749 [2020-08-21 22:04:10,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-21 22:04:10,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2749 states. [2020-08-21 22:04:10,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2749 to 2293. [2020-08-21 22:04:10,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2293 states. [2020-08-21 22:04:10,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2293 states to 2293 states and 2743 transitions. [2020-08-21 22:04:10,889 INFO L78 Accepts]: Start accepts. Automaton has 2293 states and 2743 transitions. Word has length 151 [2020-08-21 22:04:10,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:04:10,890 INFO L479 AbstractCegarLoop]: Abstraction has 2293 states and 2743 transitions. [2020-08-21 22:04:10,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 22:04:10,890 INFO L276 IsEmpty]: Start isEmpty. Operand 2293 states and 2743 transitions. [2020-08-21 22:04:10,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-08-21 22:04:10,899 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:04:10,899 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-21 22:04:10,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 22:04:10,899 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:04:10,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:04:10,900 INFO L82 PathProgramCache]: Analyzing trace with hash 402231489, now seen corresponding path program 2 times [2020-08-21 22:04:10,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:04:10,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723559305] [2020-08-21 22:04:10,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:04:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 22:04:10,960 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 22:04:10,961 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 22:04:10,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 22:04:11,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:04:11 BoogieIcfgContainer [2020-08-21 22:04:11,000 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:04:11,002 INFO L168 Benchmark]: Toolchain (without parser) took 54497.53 ms. Allocated memory was 141.0 MB in the beginning and 871.4 MB in the end (delta: 730.3 MB). Free memory was 102.8 MB in the beginning and 723.9 MB in the end (delta: -621.1 MB). Peak memory consumption was 109.2 MB. Max. memory is 7.1 GB. [2020-08-21 22:04:11,002 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 22:04:11,003 INFO L168 Benchmark]: CACSL2BoogieTranslator took 639.41 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.6 MB in the beginning and 170.2 MB in the end (delta: -67.6 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-08-21 22:04:11,004 INFO L168 Benchmark]: Boogie Preprocessor took 91.76 ms. Allocated memory is still 204.5 MB. Free memory was 170.2 MB in the beginning and 165.7 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2020-08-21 22:04:11,004 INFO L168 Benchmark]: RCFGBuilder took 1137.46 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 165.7 MB in the beginning and 188.0 MB in the end (delta: -22.3 MB). Peak memory consumption was 78.6 MB. Max. memory is 7.1 GB. [2020-08-21 22:04:11,005 INFO L168 Benchmark]: TraceAbstraction took 52622.28 ms. Allocated memory was 234.9 MB in the beginning and 871.4 MB in the end (delta: 636.5 MB). Free memory was 188.0 MB in the beginning and 723.9 MB in the end (delta: -535.9 MB). Peak memory consumption was 100.6 MB. Max. memory is 7.1 GB. [2020-08-21 22:04:11,007 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 639.41 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.6 MB in the beginning and 170.2 MB in the end (delta: -67.6 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.76 ms. Allocated memory is still 204.5 MB. Free memory was 170.2 MB in the beginning and 165.7 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1137.46 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 165.7 MB in the beginning and 188.0 MB in the end (delta: -22.3 MB). Peak memory consumption was 78.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 52622.28 ms. Allocated memory was 234.9 MB in the beginning and 871.4 MB in the end (delta: 636.5 MB). Free memory was 188.0 MB in the beginning and 723.9 MB in the end (delta: -535.9 MB). Peak memory consumption was 100.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 439]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L238] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L444] int cleanupTimeShifts = 4; [L556] int pumpRunning = 0; [L557] int systemActive = 1; [L774] int waterLevel = 1; [L775] int methaneLevelCritical = 0; [L525] int retValue_acc ; [L526] int tmp ; [L530] FCALL select_helpers() [L531] FCALL select_features() [L532] CALL, EXPR valid_product() [L963] int retValue_acc ; [L966] retValue_acc = 1 [L967] return (retValue_acc); [L532] RET, EXPR valid_product() [L532] tmp = valid_product() [L534] COND TRUE \read(tmp) [L536] FCALL setup() [L537] CALL runTest() [L516] CALL test() [L869] int splverifierCounter ; [L870] int tmp ; [L871] int tmp___0 ; [L872] int tmp___1 ; [L873] int tmp___2 ; [L876] splverifierCounter = 0 [L878] COND TRUE 1 [L880] COND TRUE splverifierCounter < 4 [L886] tmp = __VERIFIER_nondet_int() [L888] COND TRUE \read(tmp) [L890] CALL waterRise() [L792] COND TRUE waterLevel < 2 [L793] waterLevel = waterLevel + 1 [L890] RET waterRise() [L896] tmp___0 = __VERIFIER_nondet_int() [L898] COND FALSE !(\read(tmp___0)) [L906] tmp___2 = __VERIFIER_nondet_int() [L908] COND FALSE !(\read(tmp___2)) [L914] tmp___1 = __VERIFIER_nondet_int() [L916] COND FALSE !(\read(tmp___1)) [L925] CALL timeShift() [L563] COND FALSE !(\read(pumpRunning)) [L570] COND TRUE \read(systemActive) [L572] CALL processEnvironment() [L618] int tmp ; [L621] COND FALSE !(\read(pumpRunning)) [L636] CALL processEnvironment__wrappee__methaneQuery() [L592] int tmp ; [L595] COND TRUE ! pumpRunning [L597] CALL, EXPR isHighWaterLevel() [L732] int retValue_acc ; [L733] int tmp ; [L734] int tmp___0 ; [L738] CALL, EXPR isHighWaterSensorDry() [L854] int retValue_acc ; [L857] COND FALSE !(waterLevel < 2) [L861] retValue_acc = 0 [L862] return (retValue_acc); [L738] RET, EXPR isHighWaterSensorDry() [L738] tmp = isHighWaterSensorDry() [L740] COND FALSE !(\read(tmp)) [L743] tmp___0 = 1 [L745] retValue_acc = tmp___0 [L746] return (retValue_acc); [L597] RET, EXPR isHighWaterLevel() [L597] tmp = isHighWaterLevel() [L599] COND TRUE \read(tmp) [L601] CALL activatePump() [L651] int tmp ; [L655] CALL, EXPR isMethaneAlarm() [L676] int retValue_acc ; [L680] CALL, EXPR isMethaneLevelCritical() [L813] int retValue_acc ; [L816] retValue_acc = methaneLevelCritical [L817] return (retValue_acc); [L680] RET, EXPR isMethaneLevelCritical() [L680] retValue_acc = isMethaneLevelCritical() [L682] return (retValue_acc); [L655] RET, EXPR isMethaneAlarm() [L655] tmp = isMethaneAlarm() [L657] COND FALSE !(\read(tmp)) [L661] CALL activatePump__wrappee__highWaterSensor() [L646] pumpRunning = 1 [L661] RET activatePump__wrappee__highWaterSensor() [L601] RET activatePump() [L636] RET processEnvironment__wrappee__methaneQuery() [L572] RET processEnvironment() [L578] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L845] int retValue_acc ; [L848] retValue_acc = waterLevel [L849] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) [L578] RET __utac_acc__Specification4_spec__1() [L925] RET timeShift() [L878] COND TRUE 1 [L880] COND TRUE splverifierCounter < 4 [L886] tmp = __VERIFIER_nondet_int() [L888] COND FALSE !(\read(tmp)) [L896] tmp___0 = __VERIFIER_nondet_int() [L898] COND FALSE !(\read(tmp___0)) [L906] tmp___2 = __VERIFIER_nondet_int() [L908] COND FALSE !(\read(tmp___2)) [L914] tmp___1 = __VERIFIER_nondet_int() [L916] COND FALSE !(\read(tmp___1)) [L925] CALL timeShift() [L563] COND TRUE \read(pumpRunning) [L565] CALL lowerWaterLevel() [L780] COND TRUE waterLevel > 0 [L781] waterLevel = waterLevel - 1 [L565] RET lowerWaterLevel() [L570] COND TRUE \read(systemActive) [L572] CALL processEnvironment() [L618] int tmp ; [L621] COND TRUE \read(pumpRunning) [L623] CALL, EXPR isMethaneAlarm() [L676] int retValue_acc ; [L680] CALL, EXPR isMethaneLevelCritical() [L813] int retValue_acc ; [L816] retValue_acc = methaneLevelCritical [L817] return (retValue_acc); [L680] RET, EXPR isMethaneLevelCritical() [L680] retValue_acc = isMethaneLevelCritical() [L682] return (retValue_acc); [L623] RET, EXPR isMethaneAlarm() [L623] tmp = isMethaneAlarm() [L625] COND FALSE !(\read(tmp)) [L631] CALL processEnvironment__wrappee__methaneQuery() [L592] int tmp ; [L595] COND FALSE !(! pumpRunning) [L610] FCALL processEnvironment__wrappee__base() [L631] RET processEnvironment__wrappee__methaneQuery() [L572] RET processEnvironment() [L578] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L845] int retValue_acc ; [L848] retValue_acc = waterLevel [L849] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) [L578] RET __utac_acc__Specification4_spec__1() [L925] RET timeShift() [L878] COND TRUE 1 [L880] COND TRUE splverifierCounter < 4 [L886] tmp = __VERIFIER_nondet_int() [L888] COND FALSE !(\read(tmp)) [L896] tmp___0 = __VERIFIER_nondet_int() [L898] COND FALSE !(\read(tmp___0)) [L906] tmp___2 = __VERIFIER_nondet_int() [L908] COND FALSE !(\read(tmp___2)) [L914] tmp___1 = __VERIFIER_nondet_int() [L916] COND FALSE !(\read(tmp___1)) [L925] CALL timeShift() [L563] COND TRUE \read(pumpRunning) [L565] CALL lowerWaterLevel() [L780] COND TRUE waterLevel > 0 [L781] waterLevel = waterLevel - 1 [L565] RET lowerWaterLevel() [L570] COND TRUE \read(systemActive) [L572] CALL processEnvironment() [L618] int tmp ; [L621] COND TRUE \read(pumpRunning) [L623] CALL, EXPR isMethaneAlarm() [L676] int retValue_acc ; [L680] CALL, EXPR isMethaneLevelCritical() [L813] int retValue_acc ; [L816] retValue_acc = methaneLevelCritical [L817] return (retValue_acc); [L680] RET, EXPR isMethaneLevelCritical() [L680] retValue_acc = isMethaneLevelCritical() [L682] return (retValue_acc); [L623] RET, EXPR isMethaneAlarm() [L623] tmp = isMethaneAlarm() [L625] COND FALSE !(\read(tmp)) [L631] CALL processEnvironment__wrappee__methaneQuery() [L592] int tmp ; [L595] COND FALSE !(! pumpRunning) [L610] FCALL processEnvironment__wrappee__base() [L631] RET processEnvironment__wrappee__methaneQuery() [L572] RET processEnvironment() [L578] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L845] int retValue_acc ; [L848] retValue_acc = waterLevel [L849] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND TRUE tmp == 0 [L53] CALL, EXPR isPumpRunning() [L687] int retValue_acc ; [L690] retValue_acc = pumpRunning [L691] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L439] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 242 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 52.5s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 43.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1588 SDtfs, 3981 SDslu, 1800 SDs, 0 SdLazy, 11218 SolverSat, 2877 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 578 GetRequests, 390 SyntacticMatches, 6 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 851 ImplicationChecksByTransitivity, 18.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2293occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 1512 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 1294 NumberOfCodeBlocks, 1294 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1080 ConstructedInterpolants, 0 QuantifiedInterpolants, 405647 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 172/193 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...