/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:02:10,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:02:10,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:02:10,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:02:10,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:02:10,553 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:02:10,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:02:10,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:02:10,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:02:10,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:02:10,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:02:10,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:02:10,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:02:10,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:02:10,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:02:10,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:02:10,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:02:10,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:02:10,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:02:10,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:02:10,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:02:10,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:02:10,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:02:10,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:02:10,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:02:10,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:02:10,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:02:10,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:02:10,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:02:10,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:02:10,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:02:10,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:02:10,598 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:02:10,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:02:10,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:02:10,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:02:10,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:02:10,604 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:02:10,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:02:10,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:02:10,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:02:10,609 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 [2020-09-21 10:02:10,667 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:02:10,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:02:10,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:02:10,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:02:10,670 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:02:10,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:02:10,671 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:02:10,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:02:10,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:02:10,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:02:10,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:02:10,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:02:10,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:02:10,674 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:02:10,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:02:10,674 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:02:10,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:02:10,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:02:10,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:02:10,675 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:02:10,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:02:10,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:02:10,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:02:10,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:02:10,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:02:10,676 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:02:10,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:02:10,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:02:10,677 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:02:10,677 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 -> false [2020-09-21 10:02:11,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:02:11,197 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:02:11,201 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:02:11,203 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:02:11,204 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:02:11,205 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product46.cil.c [2020-09-21 10:02:11,292 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49e322439/39b2c97c6e564f139f0a6aae0e377a12/FLAGcb528dd87 [2020-09-21 10:02:11,979 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:02:11,981 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product46.cil.c [2020-09-21 10:02:12,006 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49e322439/39b2c97c6e564f139f0a6aae0e377a12/FLAGcb528dd87 [2020-09-21 10:02:12,180 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49e322439/39b2c97c6e564f139f0a6aae0e377a12 [2020-09-21 10:02:12,196 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:02:12,202 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:02:12,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:02:12,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:02:12,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:02:12,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:02:12" (1/1) ... [2020-09-21 10:02:12,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51800d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:12, skipping insertion in model container [2020-09-21 10:02:12,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:02:12" (1/1) ... [2020-09-21 10:02:12,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:02:12,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:02:12,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:02:12,799 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:02:12,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:02:12,977 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:02:12,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:12 WrapperNode [2020-09-21 10:02:12,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:02:12,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:02:12,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:02:12,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:02:12,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:12" (1/1) ... [2020-09-21 10:02:12,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:12" (1/1) ... [2020-09-21 10:02:13,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:12" (1/1) ... [2020-09-21 10:02:13,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:12" (1/1) ... [2020-09-21 10:02:13,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:12" (1/1) ... [2020-09-21 10:02:13,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:12" (1/1) ... [2020-09-21 10:02:13,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:12" (1/1) ... [2020-09-21 10:02:13,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:02:13,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:02:13,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:02:13,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:02:13,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:12" (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 [2020-09-21 10:02:13,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:02:13,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:02:13,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 10:02:13,179 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 10:02:13,179 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 10:02:13,179 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 10:02:13,179 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-21 10:02:13,180 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 10:02:13,180 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-21 10:02:13,180 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 10:02:13,180 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 10:02:13,180 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 10:02:13,180 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 10:02:13,181 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 10:02:13,181 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 10:02:13,181 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 10:02:13,181 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 10:02:13,181 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 10:02:13,182 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 10:02:13,182 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 10:02:13,182 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:02:13,182 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 10:02:13,183 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 10:02:13,183 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 10:02:13,183 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 10:02:13,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 10:02:13,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-21 10:02:13,183 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 10:02:13,184 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 10:02:13,184 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 10:02:13,184 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 10:02:13,184 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 10:02:13,184 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 10:02:13,184 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 10:02:13,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 10:02:13,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 10:02:13,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 10:02:13,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 10:02:13,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 10:02:13,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 10:02:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:02:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:02:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 10:02:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 10:02:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 10:02:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 10:02:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 10:02:13,187 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 10:02:13,187 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 10:02:13,187 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 10:02:13,187 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 10:02:13,187 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 10:02:13,187 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 10:02:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 10:02:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 10:02:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 10:02:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 10:02:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-21 10:02:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 10:02:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 10:02:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 10:02:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-21 10:02:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 10:02:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-21 10:02:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:02:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 10:02:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 10:02:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 10:02:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 10:02:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 10:02:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 10:02:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:02:13,191 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 10:02:13,191 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 10:02:13,191 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 10:02:13,191 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 10:02:13,191 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:02:13,191 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 10:02:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 10:02:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:02:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 10:02:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:02:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 10:02:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 10:02:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:02:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 10:02:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 10:02:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:02:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 10:02:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 10:02:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 10:02:13,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:02:13,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 10:02:13,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:02:14,396 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:02:14,397 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 10:02:14,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:02:14 BoogieIcfgContainer [2020-09-21 10:02:14,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:02:14,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:02:14,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:02:14,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:02:14,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:02:12" (1/3) ... [2020-09-21 10:02:14,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316f5da4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:02:14, skipping insertion in model container [2020-09-21 10:02:14,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:12" (2/3) ... [2020-09-21 10:02:14,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316f5da4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:02:14, skipping insertion in model container [2020-09-21 10:02:14,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:02:14" (3/3) ... [2020-09-21 10:02:14,412 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product46.cil.c [2020-09-21 10:02:14,424 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:02:14,435 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:02:14,458 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:02:14,490 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:02:14,490 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:02:14,490 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:02:14,491 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:02:14,491 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:02:14,491 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:02:14,491 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:02:14,491 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:02:14,519 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-09-21 10:02:14,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 10:02:14,531 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:14,533 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] [2020-09-21 10:02:14,533 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:14,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:14,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1417441614, now seen corresponding path program 1 times [2020-09-21 10:02:14,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:14,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077658928] [2020-09-21 10:02:14,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:15,333 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:02:15,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:02:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:15,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:02:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:15,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:02:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:15,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:15,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:02:15,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:15,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:02:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:15,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:02:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:15,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:02:15,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077658928] [2020-09-21 10:02:15,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:02:15,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 10:02:15,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755156839] [2020-09-21 10:02:15,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 10:02:15,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:02:15,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 10:02:15,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:02:15,453 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 3 states. [2020-09-21 10:02:16,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:02:16,749 INFO L93 Difference]: Finished difference Result 312 states and 408 transitions. [2020-09-21 10:02:16,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 10:02:16,751 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-21 10:02:16,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:02:16,770 INFO L225 Difference]: With dead ends: 312 [2020-09-21 10:02:16,770 INFO L226 Difference]: Without dead ends: 169 [2020-09-21 10:02:16,776 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 [2020-09-21 10:02:16,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-09-21 10:02:16,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 134. [2020-09-21 10:02:16,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-09-21 10:02:16,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 158 transitions. [2020-09-21 10:02:16,885 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 158 transitions. Word has length 46 [2020-09-21 10:02:16,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:02:16,886 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 158 transitions. [2020-09-21 10:02:16,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 10:02:16,886 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 158 transitions. [2020-09-21 10:02:16,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 10:02:16,890 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:16,890 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] [2020-09-21 10:02:16,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:02:16,891 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:16,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:16,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1689810546, now seen corresponding path program 1 times [2020-09-21 10:02:16,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:16,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223461293] [2020-09-21 10:02:16,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:17,266 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:02:17,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:02:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:17,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:02:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:17,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:02:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:17,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:17,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:02:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:17,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:02:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:17,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 10:02:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:17,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:02:17,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223461293] [2020-09-21 10:02:17,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:02:17,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:02:17,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777529933] [2020-09-21 10:02:17,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:02:17,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:02:17,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:02:17,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:02:17,323 INFO L87 Difference]: Start difference. First operand 134 states and 158 transitions. Second operand 4 states. [2020-09-21 10:02:17,772 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:18,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:02:18,692 INFO L93 Difference]: Finished difference Result 241 states and 295 transitions. [2020-09-21 10:02:18,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 10:02:18,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-21 10:02:18,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:02:18,696 INFO L225 Difference]: With dead ends: 241 [2020-09-21 10:02:18,696 INFO L226 Difference]: Without dead ends: 153 [2020-09-21 10:02:18,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:02:18,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-21 10:02:18,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 125. [2020-09-21 10:02:18,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-21 10:02:18,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 146 transitions. [2020-09-21 10:02:18,739 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 146 transitions. Word has length 47 [2020-09-21 10:02:18,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:02:18,739 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 146 transitions. [2020-09-21 10:02:18,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:02:18,739 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 146 transitions. [2020-09-21 10:02:18,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 10:02:18,741 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:18,742 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] [2020-09-21 10:02:18,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:02:18,742 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:18,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:18,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1011180464, now seen corresponding path program 1 times [2020-09-21 10:02:18,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:18,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521040318] [2020-09-21 10:02:18,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:19,224 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:02:19,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:02:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:19,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:02:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:19,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:02:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:19,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:19,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:02:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:19,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:02:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:19,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:02:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:19,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:02:19,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521040318] [2020-09-21 10:02:19,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:02:19,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:02:19,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456354897] [2020-09-21 10:02:19,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:02:19,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:02:19,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:02:19,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:02:19,354 INFO L87 Difference]: Start difference. First operand 125 states and 146 transitions. Second operand 8 states. [2020-09-21 10:02:19,833 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:02:20,219 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:20,536 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:20,865 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:22,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:02:22,210 INFO L93 Difference]: Finished difference Result 254 states and 313 transitions. [2020-09-21 10:02:22,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 10:02:22,211 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-09-21 10:02:22,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:02:22,214 INFO L225 Difference]: With dead ends: 254 [2020-09-21 10:02:22,215 INFO L226 Difference]: Without dead ends: 153 [2020-09-21 10:02:22,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:02:22,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-21 10:02:22,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 125. [2020-09-21 10:02:22,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-21 10:02:22,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 145 transitions. [2020-09-21 10:02:22,252 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 145 transitions. Word has length 52 [2020-09-21 10:02:22,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:02:22,253 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 145 transitions. [2020-09-21 10:02:22,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:02:22,253 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 145 transitions. [2020-09-21 10:02:22,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-21 10:02:22,255 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:22,255 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, 1, 1, 1, 1] [2020-09-21 10:02:22,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:02:22,256 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:22,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:22,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1017334303, now seen corresponding path program 1 times [2020-09-21 10:02:22,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:22,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640169362] [2020-09-21 10:02:22,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:22,560 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:02:22,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:02:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:22,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:02:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:22,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:02:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:22,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:22,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:02:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:22,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 10:02:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:22,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:22,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:22,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-21 10:02:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:22,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-21 10:02:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:22,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:02:22,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640169362] [2020-09-21 10:02:22,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:02:22,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:02:22,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466773322] [2020-09-21 10:02:22,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:02:22,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:02:22,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:02:22,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:02:22,717 INFO L87 Difference]: Start difference. First operand 125 states and 145 transitions. Second operand 6 states. [2020-09-21 10:02:23,108 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:02:24,438 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:25,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:02:25,261 INFO L93 Difference]: Finished difference Result 356 states and 440 transitions. [2020-09-21 10:02:25,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 10:02:25,262 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-09-21 10:02:25,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:02:25,265 INFO L225 Difference]: With dead ends: 356 [2020-09-21 10:02:25,265 INFO L226 Difference]: Without dead ends: 255 [2020-09-21 10:02:25,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-21 10:02:25,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-09-21 10:02:25,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 212. [2020-09-21 10:02:25,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-09-21 10:02:25,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 241 transitions. [2020-09-21 10:02:25,321 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 241 transitions. Word has length 65 [2020-09-21 10:02:25,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:02:25,322 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 241 transitions. [2020-09-21 10:02:25,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:02:25,322 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 241 transitions. [2020-09-21 10:02:25,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-21 10:02:25,324 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:25,324 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:02:25,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:02:25,324 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:25,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:25,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1244154125, now seen corresponding path program 1 times [2020-09-21 10:02:25,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:25,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574989246] [2020-09-21 10:02:25,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:25,668 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:02:25,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:02:25,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:25,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:02:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:25,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:02:25,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:25,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:25,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:25,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:02:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:25,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 10:02:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:25,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:25,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:25,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:25,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:02:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:25,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-21 10:02:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:25,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-21 10:02:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:25,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:02:25,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574989246] [2020-09-21 10:02:25,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:02:25,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:02:25,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535990610] [2020-09-21 10:02:25,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:02:25,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:02:25,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:02:25,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:02:25,826 INFO L87 Difference]: Start difference. First operand 212 states and 241 transitions. Second operand 8 states. [2020-09-21 10:02:26,248 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:02:27,428 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:27,823 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:02:28,502 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:28,786 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:29,131 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:30,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:02:30,221 INFO L93 Difference]: Finished difference Result 634 states and 779 transitions. [2020-09-21 10:02:30,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 10:02:30,222 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-09-21 10:02:30,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:02:30,227 INFO L225 Difference]: With dead ends: 634 [2020-09-21 10:02:30,227 INFO L226 Difference]: Without dead ends: 446 [2020-09-21 10:02:30,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-21 10:02:30,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2020-09-21 10:02:30,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 379. [2020-09-21 10:02:30,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-09-21 10:02:30,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 432 transitions. [2020-09-21 10:02:30,330 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 432 transitions. Word has length 79 [2020-09-21 10:02:30,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:02:30,331 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 432 transitions. [2020-09-21 10:02:30,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:02:30,331 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 432 transitions. [2020-09-21 10:02:30,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-21 10:02:30,333 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:30,333 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:02:30,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:02:30,334 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:30,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:30,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1996569391, now seen corresponding path program 1 times [2020-09-21 10:02:30,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:30,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804414293] [2020-09-21 10:02:30,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:30,685 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:02:30,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:02:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:30,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:02:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:30,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:02:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:30,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:30,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:02:30,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:30,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 10:02:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:30,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:02:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:30,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:30,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:30,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:30,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:30,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:30,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:02:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:30,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-21 10:02:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:30,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-21 10:02:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:30,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:02:30,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804414293] [2020-09-21 10:02:30,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:02:30,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:02:30,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073635087] [2020-09-21 10:02:30,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:02:30,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:02:30,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:02:30,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:02:30,883 INFO L87 Difference]: Start difference. First operand 379 states and 432 transitions. Second operand 9 states. [2020-09-21 10:02:31,333 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:02:32,636 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:02:32,976 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:34,121 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:34,442 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:34,733 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:35,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:02:35,164 INFO L93 Difference]: Finished difference Result 488 states and 612 transitions. [2020-09-21 10:02:35,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 10:02:35,164 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-09-21 10:02:35,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:02:35,169 INFO L225 Difference]: With dead ends: 488 [2020-09-21 10:02:35,169 INFO L226 Difference]: Without dead ends: 485 [2020-09-21 10:02:35,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-09-21 10:02:35,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-09-21 10:02:35,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 379. [2020-09-21 10:02:35,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-09-21 10:02:35,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 431 transitions. [2020-09-21 10:02:35,271 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 431 transitions. Word has length 83 [2020-09-21 10:02:35,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:02:35,272 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 431 transitions. [2020-09-21 10:02:35,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:02:35,272 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 431 transitions. [2020-09-21 10:02:35,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-21 10:02:35,274 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:35,275 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:02:35,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 10:02:35,275 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:35,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:35,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1098775200, now seen corresponding path program 1 times [2020-09-21 10:02:35,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:35,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498542690] [2020-09-21 10:02:35,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,584 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:02:35,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:02:35,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:02:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:02:35,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:35,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:02:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 10:02:35,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:02:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:35,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:02:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-21 10:02:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-21 10:02:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:35,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:02:35,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498542690] [2020-09-21 10:02:35,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:02:35,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:02:35,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9903804] [2020-09-21 10:02:35,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:02:35,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:02:35,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:02:35,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:02:35,772 INFO L87 Difference]: Start difference. First operand 379 states and 431 transitions. Second operand 9 states. [2020-09-21 10:02:37,294 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:37,610 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:02:37,852 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:38,167 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:39,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:02:39,370 INFO L93 Difference]: Finished difference Result 848 states and 1052 transitions. [2020-09-21 10:02:39,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 10:02:39,371 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-09-21 10:02:39,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:02:39,375 INFO L225 Difference]: With dead ends: 848 [2020-09-21 10:02:39,375 INFO L226 Difference]: Without dead ends: 493 [2020-09-21 10:02:39,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:02:39,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-09-21 10:02:39,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 389. [2020-09-21 10:02:39,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2020-09-21 10:02:39,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 441 transitions. [2020-09-21 10:02:39,461 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 441 transitions. Word has length 99 [2020-09-21 10:02:39,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:02:39,461 INFO L479 AbstractCegarLoop]: Abstraction has 389 states and 441 transitions. [2020-09-21 10:02:39,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:02:39,462 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 441 transitions. [2020-09-21 10:02:39,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-21 10:02:39,464 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:39,464 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:02:39,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 10:02:39,465 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:39,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:39,465 INFO L82 PathProgramCache]: Analyzing trace with hash -205288862, now seen corresponding path program 1 times [2020-09-21 10:02:39,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:39,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999655503] [2020-09-21 10:02:39,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:39,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:39,797 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:02:39,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:02:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:39,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:02:39,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:39,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:02:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:39,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:39,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:02:39,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:39,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 10:02:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:39,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:02:39,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:39,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:39,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:39,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:39,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:02:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:39,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:39,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:39,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:39,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-21 10:02:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:39,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-21 10:02:39,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:40,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:02:40,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999655503] [2020-09-21 10:02:40,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:02:40,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-21 10:02:40,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133810895] [2020-09-21 10:02:40,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 10:02:40,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:02:40,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 10:02:40,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-21 10:02:40,015 INFO L87 Difference]: Start difference. First operand 389 states and 441 transitions. Second operand 11 states. [2020-09-21 10:02:40,662 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:40,981 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:41,278 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:42,038 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:42,347 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:42,654 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:43,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:02:43,985 INFO L93 Difference]: Finished difference Result 868 states and 1074 transitions. [2020-09-21 10:02:43,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 10:02:43,987 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 99 [2020-09-21 10:02:43,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:02:43,993 INFO L225 Difference]: With dead ends: 868 [2020-09-21 10:02:43,993 INFO L226 Difference]: Without dead ends: 503 [2020-09-21 10:02:43,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-09-21 10:02:43,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2020-09-21 10:02:44,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 397. [2020-09-21 10:02:44,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-09-21 10:02:44,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 449 transitions. [2020-09-21 10:02:44,077 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 449 transitions. Word has length 99 [2020-09-21 10:02:44,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:02:44,078 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 449 transitions. [2020-09-21 10:02:44,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 10:02:44,078 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 449 transitions. [2020-09-21 10:02:44,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-21 10:02:44,080 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:44,080 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:02:44,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 10:02:44,081 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:44,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:44,081 INFO L82 PathProgramCache]: Analyzing trace with hash -213048221, now seen corresponding path program 1 times [2020-09-21 10:02:44,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:44,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394908202] [2020-09-21 10:02:44,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,394 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:02:44,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:02:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:02:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:02:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:02:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 10:02:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:02:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:44,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:02:44,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-21 10:02:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-21 10:02:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:44,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:02:44,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394908202] [2020-09-21 10:02:44,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:02:44,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 10:02:44,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929707225] [2020-09-21 10:02:44,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 10:02:44,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:02:44,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 10:02:44,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:02:44,619 INFO L87 Difference]: Start difference. First operand 397 states and 449 transitions. Second operand 7 states. [2020-09-21 10:02:45,082 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:02:45,716 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:02:48,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:02:48,310 INFO L93 Difference]: Finished difference Result 1210 states and 1548 transitions. [2020-09-21 10:02:48,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 10:02:48,311 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-09-21 10:02:48,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:02:48,316 INFO L225 Difference]: With dead ends: 1210 [2020-09-21 10:02:48,317 INFO L226 Difference]: Without dead ends: 837 [2020-09-21 10:02:48,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-09-21 10:02:48,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2020-09-21 10:02:48,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 717. [2020-09-21 10:02:48,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2020-09-21 10:02:48,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 843 transitions. [2020-09-21 10:02:48,430 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 843 transitions. Word has length 99 [2020-09-21 10:02:48,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:02:48,430 INFO L479 AbstractCegarLoop]: Abstraction has 717 states and 843 transitions. [2020-09-21 10:02:48,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 10:02:48,430 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 843 transitions. [2020-09-21 10:02:48,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-21 10:02:48,432 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:48,433 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:02:48,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 10:02:48,433 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:48,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:48,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1140072279, now seen corresponding path program 1 times [2020-09-21 10:02:48,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:48,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524922821] [2020-09-21 10:02:48,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:48,792 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:02:48,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:02:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:48,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:02:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:48,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:02:48,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:48,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:48,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:02:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:48,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 10:02:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:48,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 10:02:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:48,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:02:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:48,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:48,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:48,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:48,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:02:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:49,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:49,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:49,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:49,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-21 10:02:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:49,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-09-21 10:02:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:49,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 10:02:49,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524922821] [2020-09-21 10:02:49,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:02:49,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-21 10:02:49,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929109290] [2020-09-21 10:02:49,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-21 10:02:49,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:02:49,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-21 10:02:49,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-09-21 10:02:49,146 INFO L87 Difference]: Start difference. First operand 717 states and 843 transitions. Second operand 17 states. [2020-09-21 10:02:49,964 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:02:50,331 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:02:50,649 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:02:50,947 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:02:51,721 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:02:52,892 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:53,288 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:53,625 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:53,983 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:54,395 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:54,728 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:55,458 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-09-21 10:02:56,138 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-09-21 10:02:58,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:02:58,478 INFO L93 Difference]: Finished difference Result 1499 states and 1843 transitions. [2020-09-21 10:02:58,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-21 10:02:58,478 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 103 [2020-09-21 10:02:58,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:02:58,485 INFO L225 Difference]: With dead ends: 1499 [2020-09-21 10:02:58,485 INFO L226 Difference]: Without dead ends: 806 [2020-09-21 10:02:58,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=342, Invalid=1380, Unknown=0, NotChecked=0, Total=1722 [2020-09-21 10:02:58,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-09-21 10:02:58,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 689. [2020-09-21 10:02:58,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-09-21 10:02:58,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 797 transitions. [2020-09-21 10:02:58,631 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 797 transitions. Word has length 103 [2020-09-21 10:02:58,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:02:58,632 INFO L479 AbstractCegarLoop]: Abstraction has 689 states and 797 transitions. [2020-09-21 10:02:58,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-21 10:02:58,632 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 797 transitions. [2020-09-21 10:02:58,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-21 10:02:58,635 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:58,636 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 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] [2020-09-21 10:02:58,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 10:02:58,637 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:58,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:58,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1934361844, now seen corresponding path program 1 times [2020-09-21 10:02:58,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:58,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421520694] [2020-09-21 10:02:58,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:58,956 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:02:58,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:02:58,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:58,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:02:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:58,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:02:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:58,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:58,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:59,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:02:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:59,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 10:02:59,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:59,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 10:02:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:59,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:59,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:59,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:59,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:59,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:02:59,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:59,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:59,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:59,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:59,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 10:02:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:59,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:59,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-21 10:02:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:59,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-21 10:02:59,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:59,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-21 10:02:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:59,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:59,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:59,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:59,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-21 10:02:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:59,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:59,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-21 10:02:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:59,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-09-21 10:02:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:59,310 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-21 10:02:59,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421520694] [2020-09-21 10:02:59,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:02:59,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-21 10:02:59,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017789258] [2020-09-21 10:02:59,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-21 10:02:59,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:02:59,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-21 10:02:59,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-09-21 10:02:59,313 INFO L87 Difference]: Start difference. First operand 689 states and 797 transitions. Second operand 18 states. [2020-09-21 10:03:00,163 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:03:00,575 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:03:00,911 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:03:01,214 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:03:02,015 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:03:03,252 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:03:03,637 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:03:03,973 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:03:04,332 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:03:04,736 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:03:05,072 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:03:06,430 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:03:06,729 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:03:07,069 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:03:07,400 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:03:08,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:03:08,377 INFO L93 Difference]: Finished difference Result 1274 states and 1566 transitions. [2020-09-21 10:03:08,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-21 10:03:08,378 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 155 [2020-09-21 10:03:08,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:03:08,379 INFO L225 Difference]: With dead ends: 1274 [2020-09-21 10:03:08,379 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 10:03:08,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=378, Invalid=1692, Unknown=0, NotChecked=0, Total=2070 [2020-09-21 10:03:08,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 10:03:08,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 10:03:08,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 10:03:08,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 10:03:08,386 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 155 [2020-09-21 10:03:08,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:03:08,386 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 10:03:08,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-21 10:03:08,387 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 10:03:08,387 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 10:03:08,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 10:03:08,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 10:03:08,586 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:03:08,780 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:03:08,946 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:03:09,107 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:03:09,271 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 190