/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 --rcfgbuilder.size.of.a.code.block SingleStatement --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_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:39:14,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:39:14,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:39:14,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:39:14,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:39:14,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:39:14,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:39:14,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:39:14,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:39:14,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:39:14,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:39:14,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:39:14,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:39:14,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:39:14,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:39:14,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:39:14,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:39:14,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:39:14,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:39:14,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:39:14,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:39:14,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:39:14,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:39:14,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:39:14,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 14:39:14,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 14:39:14,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 14:39:14,505 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 14:39:14,506 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 14:39:14,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 14:39:14,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 14:39:14,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 14:39:14,517 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 14:39:14,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 14:39:14,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 14:39:14,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 14:39:14,522 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 14:39:14,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 14:39:14,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:39:14,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:39:14,525 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:39:14,526 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 [2020-09-24 14:39:14,571 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:39:14,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:39:14,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:39:14,574 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:39:14,574 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:39:14,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:39:14,574 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:39:14,575 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:39:14,575 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:39:14,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:39:14,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:39:14,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:39:14,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:39:14,577 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:39:14,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:39:14,577 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:39:14,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:39:14,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:39:14,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:39:14,578 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:39:14,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:39:14,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:39:14,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:39:14,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:39:14,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:39:14,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:39:14,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:39:14,580 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:39:14,580 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:39:14,580 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.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 14:39:15,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:39:15,081 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:39:15,086 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:39:15,087 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:39:15,088 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:39:15,089 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_productSimulator.cil.c [2020-09-24 14:39:15,185 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/467fe2b91/73abee7995bf475ebcceb9d5049fc176/FLAGffcb23fbc [2020-09-24 14:39:15,803 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:39:15,805 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_productSimulator.cil.c [2020-09-24 14:39:15,830 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/467fe2b91/73abee7995bf475ebcceb9d5049fc176/FLAGffcb23fbc [2020-09-24 14:39:16,069 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/467fe2b91/73abee7995bf475ebcceb9d5049fc176 [2020-09-24 14:39:16,084 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:39:16,091 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:39:16,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:39:16,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:39:16,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:39:16,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:39:16" (1/1) ... [2020-09-24 14:39:16,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fa7080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:39:16, skipping insertion in model container [2020-09-24 14:39:16,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:39:16" (1/1) ... [2020-09-24 14:39:16,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:39:16,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:39:16,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:39:16,641 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:39:16,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:39:16,813 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:39:16,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:39:16 WrapperNode [2020-09-24 14:39:16,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:39:16,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:39:16,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:39:16,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:39:16,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:39:16" (1/1) ... [2020-09-24 14:39:16,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:39:16" (1/1) ... [2020-09-24 14:39:16,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:39:16" (1/1) ... [2020-09-24 14:39:16,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:39:16" (1/1) ... [2020-09-24 14:39:16,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:39:16" (1/1) ... [2020-09-24 14:39:16,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:39:16" (1/1) ... [2020-09-24 14:39:16,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:39:16" (1/1) ... [2020-09-24 14:39:16,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:39:16,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:39:16,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:39:16,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:39:16,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:39:16" (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 [2020-09-24 14:39:17,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:39:17,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:39:17,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 14:39:17,001 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 14:39:17,001 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 14:39:17,001 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2020-09-24 14:39:17,002 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__highWaterSensor [2020-09-24 14:39:17,002 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2020-09-24 14:39:17,002 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__lowWaterSensor [2020-09-24 14:39:17,002 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2020-09-24 14:39:17,002 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__methaneAlarm [2020-09-24 14:39:17,003 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 14:39:17,003 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2020-09-24 14:39:17,003 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__role__methaneQuery [2020-09-24 14:39:17,003 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 14:39:17,003 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 14:39:17,003 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 14:39:17,004 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 14:39:17,004 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 14:39:17,004 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 14:39:17,004 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 14:39:17,005 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 14:39:17,005 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 14:39:17,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 14:39:17,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 14:39:17,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 14:39:17,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 14:39:17,006 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 14:39:17,006 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 14:39:17,006 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 14:39:17,006 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 14:39:17,006 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 14:39:17,006 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 14:39:17,006 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-24 14:39:17,007 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 14:39:17,007 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 14:39:17,007 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 14:39:17,007 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 14:39:17,007 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 14:39:17,007 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 14:39:17,008 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 14:39:17,008 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 14:39:17,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 14:39:17,008 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 14:39:17,008 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 14:39:17,009 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 14:39:17,009 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 14:39:17,009 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:39:17,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:39:17,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 14:39:17,010 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 14:39:17,010 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 14:39:17,010 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 14:39:17,010 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 14:39:17,010 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 14:39:17,010 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 14:39:17,011 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 14:39:17,011 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 14:39:17,011 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 14:39:17,011 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 14:39:17,011 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 14:39:17,011 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 14:39:17,011 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 14:39:17,012 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 14:39:17,012 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 14:39:17,012 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 14:39:17,012 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 14:39:17,012 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-24 14:39:17,012 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 14:39:17,013 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2020-09-24 14:39:17,013 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 14:39:17,013 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__highWaterSensor [2020-09-24 14:39:17,013 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2020-09-24 14:39:17,013 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 14:39:17,014 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__lowWaterSensor [2020-09-24 14:39:17,014 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2020-09-24 14:39:17,014 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 14:39:17,014 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__methaneAlarm [2020-09-24 14:39:17,014 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2020-09-24 14:39:17,014 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__role__methaneQuery [2020-09-24 14:39:17,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 14:39:17,015 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 14:39:17,015 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 14:39:17,015 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 14:39:17,015 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 14:39:17,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 14:39:17,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 14:39:17,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 14:39:17,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 14:39:17,016 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 14:39:17,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 14:39:17,017 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 14:39:17,017 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 14:39:17,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 14:39:17,017 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 14:39:17,017 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 14:39:17,017 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 14:39:17,017 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 14:39:17,018 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 14:39:17,018 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 14:39:17,018 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 14:39:17,018 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 14:39:17,018 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 14:39:17,018 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 14:39:17,019 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 14:39:17,019 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 14:39:17,019 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:39:17,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:39:17,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 14:39:17,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:39:18,252 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:39:18,252 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 14:39:18,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:39:18 BoogieIcfgContainer [2020-09-24 14:39:18,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:39:18,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:39:18,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:39:18,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:39:18,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:39:16" (1/3) ... [2020-09-24 14:39:18,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca38b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:39:18, skipping insertion in model container [2020-09-24 14:39:18,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:39:16" (2/3) ... [2020-09-24 14:39:18,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca38b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:39:18, skipping insertion in model container [2020-09-24 14:39:18,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:39:18" (3/3) ... [2020-09-24 14:39:18,270 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_productSimulator.cil.c [2020-09-24 14:39:18,283 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:39:18,295 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:39:18,318 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:39:18,351 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:39:18,352 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:39:18,352 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:39:18,352 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:39:18,352 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:39:18,352 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:39:18,353 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:39:18,353 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:39:18,384 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states. [2020-09-24 14:39:18,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-24 14:39:18,406 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:39:18,408 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:39:18,409 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:39:18,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:39:18,416 INFO L82 PathProgramCache]: Analyzing trace with hash -539985006, now seen corresponding path program 1 times [2020-09-24 14:39:18,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:39:18,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [579917827] [2020-09-24 14:39:18,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:39:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:19,425 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-09-24 14:39:19,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:39:19,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:19,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-24 14:39:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:19,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-09-24 14:39:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:19,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:39:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:19,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 14:39:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:19,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 14:39:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:19,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 14:39:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:19,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-24 14:39:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:19,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-24 14:39:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:19,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-09-24 14:39:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:19,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-09-24 14:39:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:19,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-09-24 14:39:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:19,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-09-24 14:39:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:19,693 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-09-24 14:39:19,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [579917827] [2020-09-24 14:39:19,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:39:19,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 14:39:19,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201133504] [2020-09-24 14:39:19,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 14:39:19,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:39:19,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 14:39:19,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 14:39:19,723 INFO L87 Difference]: Start difference. First operand 415 states. Second operand 5 states. [2020-09-24 14:39:22,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:39:22,352 INFO L93 Difference]: Finished difference Result 666 states and 807 transitions. [2020-09-24 14:39:22,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 14:39:22,354 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2020-09-24 14:39:22,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:39:22,379 INFO L225 Difference]: With dead ends: 666 [2020-09-24 14:39:22,380 INFO L226 Difference]: Without dead ends: 422 [2020-09-24 14:39:22,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-09-24 14:39:22,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2020-09-24 14:39:22,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 364. [2020-09-24 14:39:22,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-09-24 14:39:22,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 410 transitions. [2020-09-24 14:39:22,525 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 410 transitions. Word has length 224 [2020-09-24 14:39:22,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:39:22,526 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 410 transitions. [2020-09-24 14:39:22,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 14:39:22,527 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 410 transitions. [2020-09-24 14:39:22,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-24 14:39:22,533 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:39:22,534 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:39:22,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:39:22,534 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:39:22,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:39:22,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1802220362, now seen corresponding path program 1 times [2020-09-24 14:39:22,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:39:22,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145312147] [2020-09-24 14:39:22,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:39:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:23,169 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-09-24 14:39:23,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:39:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:23,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-24 14:39:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:23,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-09-24 14:39:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:23,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:39:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:23,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 14:39:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:23,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 14:39:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:23,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 14:39:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:23,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-24 14:39:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:23,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-24 14:39:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:23,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-09-24 14:39:23,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:23,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-09-24 14:39:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:23,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-09-24 14:39:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:23,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-09-24 14:39:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:23,388 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-09-24 14:39:23,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145312147] [2020-09-24 14:39:23,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:39:23,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 14:39:23,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114776578] [2020-09-24 14:39:23,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 14:39:23,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:39:23,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 14:39:23,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 14:39:23,396 INFO L87 Difference]: Start difference. First operand 364 states and 410 transitions. Second operand 6 states. [2020-09-24 14:39:24,908 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-09-24 14:39:27,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:39:27,149 INFO L93 Difference]: Finished difference Result 575 states and 670 transitions. [2020-09-24 14:39:27,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 14:39:27,150 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 225 [2020-09-24 14:39:27,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:39:27,161 INFO L225 Difference]: With dead ends: 575 [2020-09-24 14:39:27,162 INFO L226 Difference]: Without dead ends: 405 [2020-09-24 14:39:27,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-09-24 14:39:27,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-09-24 14:39:27,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 354. [2020-09-24 14:39:27,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-09-24 14:39:27,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 397 transitions. [2020-09-24 14:39:27,229 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 397 transitions. Word has length 225 [2020-09-24 14:39:27,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:39:27,230 INFO L479 AbstractCegarLoop]: Abstraction has 354 states and 397 transitions. [2020-09-24 14:39:27,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 14:39:27,230 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 397 transitions. [2020-09-24 14:39:27,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-24 14:39:27,237 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:39:27,237 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:39:27,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:39:27,238 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:39:27,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:39:27,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1784223748, now seen corresponding path program 1 times [2020-09-24 14:39:27,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:39:27,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467872445] [2020-09-24 14:39:27,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:39:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:27,926 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-09-24 14:39:27,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:39:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:28,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-24 14:39:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:28,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-09-24 14:39:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:28,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:39:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:28,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 14:39:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:28,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 14:39:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:28,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 14:39:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:28,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-24 14:39:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:28,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-24 14:39:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:28,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-09-24 14:39:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:28,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-09-24 14:39:28,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:28,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-09-24 14:39:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:28,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-24 14:39:28,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:28,371 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-09-24 14:39:28,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467872445] [2020-09-24 14:39:28,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:39:28,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-24 14:39:28,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340097124] [2020-09-24 14:39:28,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 14:39:28,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:39:28,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 14:39:28,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-24 14:39:28,378 INFO L87 Difference]: Start difference. First operand 354 states and 397 transitions. Second operand 13 states. [2020-09-24 14:39:29,140 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-09-24 14:39:29,947 WARN L193 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-09-24 14:39:30,884 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 213 [2020-09-24 14:39:31,577 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 215 [2020-09-24 14:39:33,170 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-09-24 14:39:33,626 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-09-24 14:39:38,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:39:38,742 INFO L93 Difference]: Finished difference Result 920 states and 1091 transitions. [2020-09-24 14:39:38,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 14:39:38,743 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 235 [2020-09-24 14:39:38,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:39:38,749 INFO L225 Difference]: With dead ends: 920 [2020-09-24 14:39:38,749 INFO L226 Difference]: Without dead ends: 718 [2020-09-24 14:39:38,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=196, Invalid=616, Unknown=0, NotChecked=0, Total=812 [2020-09-24 14:39:38,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-09-24 14:39:38,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 618. [2020-09-24 14:39:38,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-09-24 14:39:38,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 715 transitions. [2020-09-24 14:39:38,866 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 715 transitions. Word has length 235 [2020-09-24 14:39:38,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:39:38,867 INFO L479 AbstractCegarLoop]: Abstraction has 618 states and 715 transitions. [2020-09-24 14:39:38,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 14:39:38,867 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 715 transitions. [2020-09-24 14:39:38,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-24 14:39:38,872 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:39:38,873 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:39:38,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 14:39:38,873 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:39:38,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:39:38,874 INFO L82 PathProgramCache]: Analyzing trace with hash -52491671, now seen corresponding path program 1 times [2020-09-24 14:39:38,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:39:38,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51854454] [2020-09-24 14:39:38,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:39:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:39,452 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-09-24 14:39:39,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:39:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:39,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-24 14:39:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:39,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-09-24 14:39:39,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:39,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:39:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:39,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 14:39:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:39,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 14:39:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:39,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 14:39:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:39,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-24 14:39:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:39,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-24 14:39:39,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:39,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-09-24 14:39:39,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:39,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-09-24 14:39:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:39,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-09-24 14:39:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:39,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-09-24 14:39:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:39,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-24 14:39:39,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:39,708 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-09-24 14:39:39,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51854454] [2020-09-24 14:39:39,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:39:39,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 14:39:39,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926890909] [2020-09-24 14:39:39,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 14:39:39,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:39:39,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 14:39:39,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 14:39:39,711 INFO L87 Difference]: Start difference. First operand 618 states and 715 transitions. Second operand 11 states. [2020-09-24 14:39:40,330 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-09-24 14:39:42,455 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-09-24 14:39:42,918 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-09-24 14:39:43,560 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-09-24 14:39:43,988 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-09-24 14:39:44,499 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-09-24 14:39:44,968 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-09-24 14:39:45,357 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-09-24 14:39:46,009 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-09-24 14:39:48,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:39:48,744 INFO L93 Difference]: Finished difference Result 1722 states and 2111 transitions. [2020-09-24 14:39:48,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 14:39:48,745 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 244 [2020-09-24 14:39:48,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:39:48,756 INFO L225 Difference]: With dead ends: 1722 [2020-09-24 14:39:48,757 INFO L226 Difference]: Without dead ends: 1256 [2020-09-24 14:39:48,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756 [2020-09-24 14:39:48,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2020-09-24 14:39:48,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1045. [2020-09-24 14:39:48,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1045 states. [2020-09-24 14:39:48,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1229 transitions. [2020-09-24 14:39:48,970 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1229 transitions. Word has length 244 [2020-09-24 14:39:48,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:39:48,971 INFO L479 AbstractCegarLoop]: Abstraction has 1045 states and 1229 transitions. [2020-09-24 14:39:48,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 14:39:48,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1229 transitions. [2020-09-24 14:39:48,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-09-24 14:39:48,977 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:39:48,977 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:39:48,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 14:39:48,978 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:39:48,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:39:48,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1229880781, now seen corresponding path program 1 times [2020-09-24 14:39:48,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:39:48,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680587424] [2020-09-24 14:39:48,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:39:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:49,405 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-09-24 14:39:49,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:39:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:49,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-24 14:39:49,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:49,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-09-24 14:39:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:49,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:39:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:49,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 14:39:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:49,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 14:39:49,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:49,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 14:39:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:49,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-24 14:39:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:49,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-24 14:39:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:49,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-09-24 14:39:49,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:49,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-09-24 14:39:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:49,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-09-24 14:39:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:49,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-09-24 14:39:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:49,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-24 14:39:49,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:49,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-09-24 14:39:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:49,668 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-09-24 14:39:49,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680587424] [2020-09-24 14:39:49,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:39:49,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 14:39:49,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153363475] [2020-09-24 14:39:49,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 14:39:49,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:39:49,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 14:39:49,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-24 14:39:49,671 INFO L87 Difference]: Start difference. First operand 1045 states and 1229 transitions. Second operand 12 states. [2020-09-24 14:39:50,424 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-09-24 14:39:52,674 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-09-24 14:39:53,060 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-09-24 14:39:53,489 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-09-24 14:39:53,900 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-09-24 14:39:54,289 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-09-24 14:39:55,270 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-09-24 14:39:55,624 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-09-24 14:39:56,112 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-09-24 14:39:58,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:39:58,515 INFO L93 Difference]: Finished difference Result 2722 states and 3496 transitions. [2020-09-24 14:39:58,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 14:39:58,515 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 249 [2020-09-24 14:39:58,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:39:58,526 INFO L225 Difference]: With dead ends: 2722 [2020-09-24 14:39:58,527 INFO L226 Difference]: Without dead ends: 1829 [2020-09-24 14:39:58,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=339, Invalid=851, Unknown=0, NotChecked=0, Total=1190 [2020-09-24 14:39:58,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1829 states. [2020-09-24 14:39:58,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1829 to 1543. [2020-09-24 14:39:58,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1543 states. [2020-09-24 14:39:58,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 1876 transitions. [2020-09-24 14:39:58,741 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 1876 transitions. Word has length 249 [2020-09-24 14:39:58,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:39:58,741 INFO L479 AbstractCegarLoop]: Abstraction has 1543 states and 1876 transitions. [2020-09-24 14:39:58,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 14:39:58,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 1876 transitions. [2020-09-24 14:39:58,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-09-24 14:39:58,749 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:39:58,750 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:39:58,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 14:39:58,750 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:39:58,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:39:58,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1567732772, now seen corresponding path program 1 times [2020-09-24 14:39:58,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:39:58,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305264381] [2020-09-24 14:39:58,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:39:58,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:59,214 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-09-24 14:39:59,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:39:59,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:59,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-24 14:39:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:59,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-09-24 14:39:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:59,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:39:59,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:59,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 14:39:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:59,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 14:39:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:59,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 14:39:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:59,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-24 14:39:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:59,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-24 14:39:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:59,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-09-24 14:39:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:59,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-09-24 14:39:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:59,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-09-24 14:39:59,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:59,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-09-24 14:39:59,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:59,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:39:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:59,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:39:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:59,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:39:59,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:59,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:39:59,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:59,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:39:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:59,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:39:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:59,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:39:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:59,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-09-24 14:39:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:59,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-24 14:39:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:39:59,796 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-09-24 14:39:59,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305264381] [2020-09-24 14:39:59,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:39:59,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 14:39:59,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103090252] [2020-09-24 14:39:59,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 14:39:59,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:39:59,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 14:39:59,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-24 14:39:59,802 INFO L87 Difference]: Start difference. First operand 1543 states and 1876 transitions. Second operand 12 states. [2020-09-24 14:40:00,550 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-09-24 14:40:03,114 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-09-24 14:40:03,527 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-09-24 14:40:03,950 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-09-24 14:40:04,317 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-09-24 14:40:04,787 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-09-24 14:40:05,184 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-09-24 14:40:08,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:40:08,895 INFO L93 Difference]: Finished difference Result 4728 states and 6330 transitions. [2020-09-24 14:40:08,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-24 14:40:08,896 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 289 [2020-09-24 14:40:08,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:40:08,914 INFO L225 Difference]: With dead ends: 4728 [2020-09-24 14:40:08,915 INFO L226 Difference]: Without dead ends: 3337 [2020-09-24 14:40:08,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=265, Invalid=791, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 14:40:08,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3337 states. [2020-09-24 14:40:09,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3337 to 2573. [2020-09-24 14:40:09,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2573 states. [2020-09-24 14:40:09,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2573 states to 2573 states and 3093 transitions. [2020-09-24 14:40:09,445 INFO L78 Accepts]: Start accepts. Automaton has 2573 states and 3093 transitions. Word has length 289 [2020-09-24 14:40:09,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:40:09,446 INFO L479 AbstractCegarLoop]: Abstraction has 2573 states and 3093 transitions. [2020-09-24 14:40:09,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 14:40:09,446 INFO L276 IsEmpty]: Start isEmpty. Operand 2573 states and 3093 transitions. [2020-09-24 14:40:09,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-09-24 14:40:09,453 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:40:09,453 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:40:09,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 14:40:09,454 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:40:09,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:40:09,454 INFO L82 PathProgramCache]: Analyzing trace with hash 332197249, now seen corresponding path program 1 times [2020-09-24 14:40:09,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:40:09,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817080397] [2020-09-24 14:40:09,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:40:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:40:09,847 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-09-24 14:40:09,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:40:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:40:09,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-24 14:40:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:40:09,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-09-24 14:40:09,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:40:09,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:40:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:40:09,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 14:40:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:40:09,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 14:40:09,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:40:09,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 14:40:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:40:09,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-24 14:40:09,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:40:09,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-24 14:40:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:40:09,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-09-24 14:40:09,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:40:09,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-09-24 14:40:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:40:09,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-09-24 14:40:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:40:09,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-09-24 14:40:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:40:09,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:40:09,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:40:09,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:40:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:40:09,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:40:09,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:40:10,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:40:10,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:40:10,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:40:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:40:10,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:40:10,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:40:10,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:40:10,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:40:10,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-09-24 14:40:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:40:10,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-24 14:40:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:40:10,207 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-09-24 14:40:10,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817080397] [2020-09-24 14:40:10,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:40:10,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 14:40:10,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002701400] [2020-09-24 14:40:10,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 14:40:10,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:40:10,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 14:40:10,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-24 14:40:10,210 INFO L87 Difference]: Start difference. First operand 2573 states and 3093 transitions. Second operand 12 states.