/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 21:45:53,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 21:45:53,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 21:45:53,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 21:45:53,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:45:53,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:45:53,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:45:53,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:45:53,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:45:53,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:45:53,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:45:53,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:45:53,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:45:53,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:45:53,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:45:53,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:45:53,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:45:53,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:45:53,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:45:53,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:45:53,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:45:53,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:45:53,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:45:53,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:45:53,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 21:45:53,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 21:45:53,664 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 21:45:53,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 21:45:53,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 21:45:53,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 21:45:53,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 21:45:53,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 21:45:53,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 21:45:53,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 21:45:53,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 21:45:53,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 21:45:53,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 21:45:53,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 21:45:53,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:45:53,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:45:53,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:45:53,679 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-27 21:45:53,734 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:45:53,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:45:53,737 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:45:53,738 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:45:53,739 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:45:53,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:45:53,739 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:45:53,739 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:45:53,739 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:45:53,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:45:53,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:45:53,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:45:53,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:45:53,740 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:45:53,741 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:45:53,742 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:45:53,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:45:53,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:45:53,742 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:45:53,743 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:45:53,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:45:53,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:45:53,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:45:53,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:45:53,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:45:53,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:45:53,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:45:53,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:45:53,745 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:45:53,745 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-27 21:45:54,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:45:54,247 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:45:54,251 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:45:54,253 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:45:54,254 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:45:54,255 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product62.cil.c [2020-08-27 21:45:54,326 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d3fa0366/291a9619547f45518b09d87769aff761/FLAG3f11bb210 [2020-08-27 21:45:54,962 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:45:54,963 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product62.cil.c [2020-08-27 21:45:54,980 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d3fa0366/291a9619547f45518b09d87769aff761/FLAG3f11bb210 [2020-08-27 21:45:55,230 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d3fa0366/291a9619547f45518b09d87769aff761 [2020-08-27 21:45:55,244 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:45:55,246 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:45:55,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:45:55,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:45:55,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:45:55,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:45:55" (1/1) ... [2020-08-27 21:45:55,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27030054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:55, skipping insertion in model container [2020-08-27 21:45:55,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:45:55" (1/1) ... [2020-08-27 21:45:55,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:45:55,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:45:55,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:45:55,914 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:45:55,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:45:56,045 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:45:56,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:56 WrapperNode [2020-08-27 21:45:56,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:45:56,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:45:56,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:45:56,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:45:56,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:56" (1/1) ... [2020-08-27 21:45:56,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:56" (1/1) ... [2020-08-27 21:45:56,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:56" (1/1) ... [2020-08-27 21:45:56,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:56" (1/1) ... [2020-08-27 21:45:56,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:56" (1/1) ... [2020-08-27 21:45:56,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:56" (1/1) ... [2020-08-27 21:45:56,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:56" (1/1) ... [2020-08-27 21:45:56,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:45:56,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:45:56,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:45:56,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:45:56,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:45:56,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:45:56,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:45:56,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-27 21:45:56,253 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-27 21:45:56,254 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-27 21:45:56,255 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-27 21:45:56,255 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-27 21:45:56,256 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-27 21:45:56,256 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-27 21:45:56,256 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-27 21:45:56,256 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-27 21:45:56,258 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-27 21:45:56,258 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-27 21:45:56,258 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-27 21:45:56,258 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-27 21:45:56,261 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-27 21:45:56,262 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-27 21:45:56,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-27 21:45:56,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-27 21:45:56,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-27 21:45:56,263 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-27 21:45:56,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-27 21:45:56,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-27 21:45:56,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-27 21:45:56,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-27 21:45:56,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-27 21:45:56,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-27 21:45:56,264 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-27 21:45:56,264 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-27 21:45:56,264 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-27 21:45:56,265 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-27 21:45:56,265 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-27 21:45:56,265 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-27 21:45:56,265 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-27 21:45:56,266 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-27 21:45:56,266 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-27 21:45:56,266 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-27 21:45:56,266 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-27 21:45:56,267 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-27 21:45:56,267 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:45:56,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-27 21:45:56,267 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-27 21:45:56,267 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-27 21:45:56,267 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-27 21:45:56,268 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-27 21:45:56,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:45:56,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-27 21:45:56,268 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-27 21:45:56,268 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-27 21:45:56,268 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-27 21:45:56,268 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-27 21:45:56,269 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-27 21:45:56,269 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-27 21:45:56,269 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-27 21:45:56,269 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-27 21:45:56,269 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-27 21:45:56,269 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-27 21:45:56,270 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-27 21:45:56,270 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-27 21:45:56,271 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-27 21:45:56,271 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-27 21:45:56,271 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-27 21:45:56,271 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-27 21:45:56,271 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-27 21:45:56,272 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-27 21:45:56,272 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-27 21:45:56,272 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-27 21:45:56,272 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-27 21:45:56,272 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-27 21:45:56,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-27 21:45:56,273 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-27 21:45:56,273 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-27 21:45:56,274 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-27 21:45:56,274 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-27 21:45:56,275 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-27 21:45:56,275 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-27 21:45:56,276 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-27 21:45:56,276 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-27 21:45:56,276 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-27 21:45:56,276 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-27 21:45:56,277 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-27 21:45:56,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-27 21:45:56,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-27 21:45:56,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-27 21:45:56,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-27 21:45:56,278 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-27 21:45:56,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-27 21:45:56,278 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-27 21:45:56,280 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-27 21:45:56,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-27 21:45:56,280 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-27 21:45:56,280 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-27 21:45:56,280 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-27 21:45:56,281 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-27 21:45:56,281 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-27 21:45:56,281 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-27 21:45:56,281 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-27 21:45:56,281 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-27 21:45:56,281 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-27 21:45:56,281 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:45:56,281 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-27 21:45:56,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:45:56,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-27 21:45:56,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:45:57,461 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:45:57,461 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-27 21:45:57,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:45:57 BoogieIcfgContainer [2020-08-27 21:45:57,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:45:57,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:45:57,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:45:57,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:45:57,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:45:55" (1/3) ... [2020-08-27 21:45:57,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d20b96c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:45:57, skipping insertion in model container [2020-08-27 21:45:57,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:45:56" (2/3) ... [2020-08-27 21:45:57,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d20b96c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:45:57, skipping insertion in model container [2020-08-27 21:45:57,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:45:57" (3/3) ... [2020-08-27 21:45:57,483 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product62.cil.c [2020-08-27 21:45:57,494 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:45:57,507 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 21:45:57,529 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 21:45:57,561 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:45:57,562 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:45:57,562 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:45:57,562 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:45:57,562 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:45:57,562 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:45:57,562 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:45:57,563 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:45:57,591 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states. [2020-08-27 21:45:57,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-27 21:45:57,604 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:45:57,606 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:45:57,607 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:45:57,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:45:57,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1456889578, now seen corresponding path program 1 times [2020-08-27 21:45:57,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:45:57,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328126224] [2020-08-27 21:45:57,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:45:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:58,392 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:45:58,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:58,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:45:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:58,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:45:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:58,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:45:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:58,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:45:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:58,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:45:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:58,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:45:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:58,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:45:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:58,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-27 21:45:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:58,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-27 21:45:58,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:45:58,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:45:58,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328126224] [2020-08-27 21:45:58,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:45:58,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 21:45:58,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404151367] [2020-08-27 21:45:58,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 21:45:58,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:45:58,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 21:45:58,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:45:58,587 INFO L87 Difference]: Start difference. First operand 210 states. Second operand 4 states. [2020-08-27 21:45:59,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:45:59,905 INFO L93 Difference]: Finished difference Result 367 states and 468 transitions. [2020-08-27 21:45:59,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-27 21:45:59,908 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-27 21:45:59,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:45:59,926 INFO L225 Difference]: With dead ends: 367 [2020-08-27 21:45:59,927 INFO L226 Difference]: Without dead ends: 201 [2020-08-27 21:45:59,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:45:59,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-08-27 21:46:00,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 167. [2020-08-27 21:46:00,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-08-27 21:46:00,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 197 transitions. [2020-08-27 21:46:00,072 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 197 transitions. Word has length 59 [2020-08-27 21:46:00,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:46:00,073 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 197 transitions. [2020-08-27 21:46:00,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 21:46:00,073 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 197 transitions. [2020-08-27 21:46:00,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-27 21:46:00,077 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:46:00,077 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:46:00,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:46:00,078 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:46:00,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:46:00,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1129690590, now seen corresponding path program 1 times [2020-08-27 21:46:00,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:46:00,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470365767] [2020-08-27 21:46:00,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:46:00,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:00,417 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:46:00,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:00,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:46:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:00,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:46:00,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:00,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:00,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:46:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:00,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:46:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:00,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-27 21:46:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:00,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:00,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-27 21:46:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:00,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-27 21:46:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:00,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:46:00,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470365767] [2020-08-27 21:46:00,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:46:00,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-27 21:46:00,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088240823] [2020-08-27 21:46:00,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-27 21:46:00,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:46:00,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-27 21:46:00,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-27 21:46:00,500 INFO L87 Difference]: Start difference. First operand 167 states and 197 transitions. Second operand 5 states. [2020-08-27 21:46:01,011 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:02,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:46:02,227 INFO L93 Difference]: Finished difference Result 308 states and 376 transitions. [2020-08-27 21:46:02,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-27 21:46:02,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-27 21:46:02,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:46:02,232 INFO L225 Difference]: With dead ends: 308 [2020-08-27 21:46:02,232 INFO L226 Difference]: Without dead ends: 191 [2020-08-27 21:46:02,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-27 21:46:02,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-08-27 21:46:02,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 158. [2020-08-27 21:46:02,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-08-27 21:46:02,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 185 transitions. [2020-08-27 21:46:02,281 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 185 transitions. Word has length 60 [2020-08-27 21:46:02,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:46:02,281 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 185 transitions. [2020-08-27 21:46:02,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-27 21:46:02,281 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 185 transitions. [2020-08-27 21:46:02,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-27 21:46:02,284 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:46:02,284 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:46:02,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 21:46:02,285 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:46:02,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:46:02,285 INFO L82 PathProgramCache]: Analyzing trace with hash -651026134, now seen corresponding path program 1 times [2020-08-27 21:46:02,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:46:02,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255056415] [2020-08-27 21:46:02,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:46:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:02,705 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:46:02,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:02,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:02,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:46:02,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:02,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:46:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:02,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:02,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:46:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:02,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:46:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:02,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:46:02,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:02,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:02,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-27 21:46:02,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:02,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-27 21:46:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:02,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:46:02,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255056415] [2020-08-27 21:46:02,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:46:02,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-27 21:46:02,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838918450] [2020-08-27 21:46:02,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 21:46:02,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:46:02,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 21:46:02,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-27 21:46:02,888 INFO L87 Difference]: Start difference. First operand 158 states and 185 transitions. Second operand 9 states. [2020-08-27 21:46:03,285 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:46:03,675 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:46:03,993 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:46:04,303 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:46:05,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:46:05,870 INFO L93 Difference]: Finished difference Result 321 states and 395 transitions. [2020-08-27 21:46:05,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-27 21:46:05,873 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-27 21:46:05,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:46:05,876 INFO L225 Difference]: With dead ends: 321 [2020-08-27 21:46:05,876 INFO L226 Difference]: Without dead ends: 191 [2020-08-27 21:46:05,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-27 21:46:05,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-08-27 21:46:05,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 158. [2020-08-27 21:46:05,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-08-27 21:46:05,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 184 transitions. [2020-08-27 21:46:05,918 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 184 transitions. Word has length 65 [2020-08-27 21:46:05,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:46:05,918 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 184 transitions. [2020-08-27 21:46:05,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 21:46:05,919 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 184 transitions. [2020-08-27 21:46:05,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-27 21:46:05,921 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:46:05,922 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:46:05,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-27 21:46:05,922 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:46:05,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:46:05,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1717523051, now seen corresponding path program 1 times [2020-08-27 21:46:05,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:46:05,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325833699] [2020-08-27 21:46:05,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:46:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:06,370 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:46:06,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:06,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:46:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:06,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:46:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:06,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:06,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:06,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:46:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:06,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:46:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:06,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:46:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:06,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:06,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:06,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-27 21:46:06,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:06,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:06,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:06,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:06,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-27 21:46:06,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:06,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:46:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:06,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:46:06,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325833699] [2020-08-27 21:46:06,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:46:06,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-27 21:46:06,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647669823] [2020-08-27 21:46:06,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-27 21:46:06,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:46:06,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-27 21:46:06,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-27 21:46:06,513 INFO L87 Difference]: Start difference. First operand 158 states and 184 transitions. Second operand 7 states. [2020-08-27 21:46:06,878 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:46:08,719 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:09,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:46:09,514 INFO L93 Difference]: Finished difference Result 439 states and 543 transitions. [2020-08-27 21:46:09,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-27 21:46:09,520 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-08-27 21:46:09,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:46:09,524 INFO L225 Difference]: With dead ends: 439 [2020-08-27 21:46:09,524 INFO L226 Difference]: Without dead ends: 309 [2020-08-27 21:46:09,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-27 21:46:09,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-08-27 21:46:09,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 263. [2020-08-27 21:46:09,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-08-27 21:46:09,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 298 transitions. [2020-08-27 21:46:09,586 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 298 transitions. Word has length 83 [2020-08-27 21:46:09,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:46:09,586 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 298 transitions. [2020-08-27 21:46:09,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-27 21:46:09,586 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 298 transitions. [2020-08-27 21:46:09,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-27 21:46:09,591 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:46:09,591 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:46:09,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-27 21:46:09,592 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:46:09,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:46:09,592 INFO L82 PathProgramCache]: Analyzing trace with hash 119397721, now seen corresponding path program 1 times [2020-08-27 21:46:09,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:46:09,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929752455] [2020-08-27 21:46:09,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:46:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:09,945 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:46:09,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:09,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:09,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:46:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:10,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:46:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:10,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:10,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:10,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:46:10,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:10,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:46:10,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:10,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:46:10,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:10,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:10,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-27 21:46:10,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:10,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:10,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:10,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:10,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:10,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:10,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:46:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:10,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-27 21:46:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:10,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-27 21:46:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:10,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-27 21:46:10,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929752455] [2020-08-27 21:46:10,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:46:10,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-27 21:46:10,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512969664] [2020-08-27 21:46:10,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 21:46:10,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:46:10,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 21:46:10,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-27 21:46:10,197 INFO L87 Difference]: Start difference. First operand 263 states and 298 transitions. Second operand 9 states. [2020-08-27 21:46:10,553 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:46:11,324 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:46:12,390 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:46:12,719 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:13,229 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:46:13,539 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:46:14,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:46:14,317 INFO L93 Difference]: Finished difference Result 543 states and 648 transitions. [2020-08-27 21:46:14,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-27 21:46:14,317 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2020-08-27 21:46:14,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:46:14,322 INFO L225 Difference]: With dead ends: 543 [2020-08-27 21:46:14,322 INFO L226 Difference]: Without dead ends: 308 [2020-08-27 21:46:14,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-27 21:46:14,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-08-27 21:46:14,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 262. [2020-08-27 21:46:14,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-08-27 21:46:14,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 295 transitions. [2020-08-27 21:46:14,378 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 295 transitions. Word has length 97 [2020-08-27 21:46:14,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:46:14,379 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 295 transitions. [2020-08-27 21:46:14,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 21:46:14,379 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 295 transitions. [2020-08-27 21:46:14,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-27 21:46:14,381 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:46:14,381 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:46:14,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-27 21:46:14,381 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:46:14,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:46:14,382 INFO L82 PathProgramCache]: Analyzing trace with hash 299468705, now seen corresponding path program 1 times [2020-08-27 21:46:14,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:46:14,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026428341] [2020-08-27 21:46:14,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:46:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,671 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:46:14,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:46:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:46:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:46:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:46:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:46:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-27 21:46:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:46:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:14,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 21:46:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-27 21:46:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:14,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:46:14,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026428341] [2020-08-27 21:46:14,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:46:14,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-27 21:46:14,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257066964] [2020-08-27 21:46:14,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 21:46:14,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:46:14,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 21:46:14,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-27 21:46:14,871 INFO L87 Difference]: Start difference. First operand 262 states and 295 transitions. Second operand 9 states. [2020-08-27 21:46:15,939 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:16,252 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:46:16,572 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:16,871 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:17,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:46:17,887 INFO L93 Difference]: Finished difference Result 543 states and 653 transitions. [2020-08-27 21:46:17,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-27 21:46:17,890 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 113 [2020-08-27 21:46:17,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:46:17,894 INFO L225 Difference]: With dead ends: 543 [2020-08-27 21:46:17,894 INFO L226 Difference]: Without dead ends: 309 [2020-08-27 21:46:17,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-27 21:46:17,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-08-27 21:46:17,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 267. [2020-08-27 21:46:17,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-08-27 21:46:17,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 300 transitions. [2020-08-27 21:46:17,981 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 300 transitions. Word has length 113 [2020-08-27 21:46:17,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:46:17,982 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 300 transitions. [2020-08-27 21:46:17,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 21:46:17,982 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 300 transitions. [2020-08-27 21:46:17,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-27 21:46:17,984 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:46:17,984 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:46:17,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-27 21:46:17,985 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:46:17,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:46:17,985 INFO L82 PathProgramCache]: Analyzing trace with hash -2056336545, now seen corresponding path program 1 times [2020-08-27 21:46:17,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:46:17,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740198094] [2020-08-27 21:46:17,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:46:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:18,411 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:46:18,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:18,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:46:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:18,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:46:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:18,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:18,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:46:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:18,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:46:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:18,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:46:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:18,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:18,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-27 21:46:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:18,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:18,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:18,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:18,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:18,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:46:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:18,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:18,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:18,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:18,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:18,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 21:46:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:18,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-27 21:46:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:18,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:46:18,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740198094] [2020-08-27 21:46:18,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:46:18,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-27 21:46:18,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712052794] [2020-08-27 21:46:18,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-27 21:46:18,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:46:18,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-27 21:46:18,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-27 21:46:18,720 INFO L87 Difference]: Start difference. First operand 267 states and 300 transitions. Second operand 11 states. [2020-08-27 21:46:19,406 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:19,713 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:19,946 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:20,826 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:21,133 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:21,451 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:22,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:46:22,838 INFO L93 Difference]: Finished difference Result 553 states and 664 transitions. [2020-08-27 21:46:22,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-27 21:46:22,840 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 113 [2020-08-27 21:46:22,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:46:22,846 INFO L225 Difference]: With dead ends: 553 [2020-08-27 21:46:22,846 INFO L226 Difference]: Without dead ends: 314 [2020-08-27 21:46:22,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-27 21:46:22,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-08-27 21:46:22,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 271. [2020-08-27 21:46:22,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-08-27 21:46:22,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 304 transitions. [2020-08-27 21:46:22,934 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 304 transitions. Word has length 113 [2020-08-27 21:46:22,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:46:22,934 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 304 transitions. [2020-08-27 21:46:22,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-27 21:46:22,935 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 304 transitions. [2020-08-27 21:46:22,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-27 21:46:22,939 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:46:22,939 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:46:22,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-27 21:46:22,940 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:46:22,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:46:22,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1287166530, now seen corresponding path program 1 times [2020-08-27 21:46:22,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:46:22,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289213824] [2020-08-27 21:46:22,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:46:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:23,266 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:46:23,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:23,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:46:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:23,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:46:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:23,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:23,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:46:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:23,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:46:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:23,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:46:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:23,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:23,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-27 21:46:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:23,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:23,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:23,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:23,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:23,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:46:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:23,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:23,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:23,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:23,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:23,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 21:46:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:23,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-27 21:46:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:23,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:46:23,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289213824] [2020-08-27 21:46:23,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:46:23,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-27 21:46:23,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697222683] [2020-08-27 21:46:23,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-27 21:46:23,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:46:23,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-27 21:46:23,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-27 21:46:23,544 INFO L87 Difference]: Start difference. First operand 271 states and 304 transitions. Second operand 7 states. [2020-08-27 21:46:23,895 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:46:24,435 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:46:26,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:46:26,922 INFO L93 Difference]: Finished difference Result 745 states and 915 transitions. [2020-08-27 21:46:26,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-27 21:46:26,923 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2020-08-27 21:46:26,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:46:26,926 INFO L225 Difference]: With dead ends: 745 [2020-08-27 21:46:26,926 INFO L226 Difference]: Without dead ends: 502 [2020-08-27 21:46:26,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-27 21:46:26,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-08-27 21:46:27,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 460. [2020-08-27 21:46:27,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-08-27 21:46:27,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 532 transitions. [2020-08-27 21:46:27,011 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 532 transitions. Word has length 113 [2020-08-27 21:46:27,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:46:27,012 INFO L479 AbstractCegarLoop]: Abstraction has 460 states and 532 transitions. [2020-08-27 21:46:27,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-27 21:46:27,012 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 532 transitions. [2020-08-27 21:46:27,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-27 21:46:27,014 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:46:27,014 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:46:27,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-27 21:46:27,014 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:46:27,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:46:27,015 INFO L82 PathProgramCache]: Analyzing trace with hash -803017404, now seen corresponding path program 1 times [2020-08-27 21:46:27,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:46:27,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974347628] [2020-08-27 21:46:27,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:46:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:27,552 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:46:27,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:27,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:46:27,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:27,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:46:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:27,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:27,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:46:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:27,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:46:27,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:27,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:46:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:27,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-27 21:46:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:27,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:27,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-27 21:46:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:27,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:27,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:27,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:27,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:27,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:27,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:46:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:27,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:27,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:27,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:27,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-27 21:46:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:27,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-27 21:46:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:27,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:46:27,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974347628] [2020-08-27 21:46:27,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:46:27,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-27 21:46:27,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634514498] [2020-08-27 21:46:27,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 21:46:27,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:46:27,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 21:46:27,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:46:27,828 INFO L87 Difference]: Start difference. First operand 460 states and 532 transitions. Second operand 12 states. [2020-08-27 21:46:28,291 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:46:29,107 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:46:30,531 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:46:30,911 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:46:31,210 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:46:31,559 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:46:31,924 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:46:33,501 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:46:33,755 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:34,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:46:34,813 INFO L93 Difference]: Finished difference Result 1281 states and 1569 transitions. [2020-08-27 21:46:34,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-27 21:46:34,814 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 117 [2020-08-27 21:46:34,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:46:34,823 INFO L225 Difference]: With dead ends: 1281 [2020-08-27 21:46:34,823 INFO L226 Difference]: Without dead ends: 928 [2020-08-27 21:46:34,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-27 21:46:34,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2020-08-27 21:46:34,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 803. [2020-08-27 21:46:34,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-27 21:46:34,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 919 transitions. [2020-08-27 21:46:34,955 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 919 transitions. Word has length 117 [2020-08-27 21:46:34,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:46:34,955 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 919 transitions. [2020-08-27 21:46:34,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 21:46:34,956 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 919 transitions. [2020-08-27 21:46:34,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-08-27 21:46:34,959 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:46:34,960 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:46:34,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-27 21:46:34,960 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:46:34,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:46:34,961 INFO L82 PathProgramCache]: Analyzing trace with hash -394036424, now seen corresponding path program 1 times [2020-08-27 21:46:34,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:46:34,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728179036] [2020-08-27 21:46:34,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:46:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,368 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:46:35,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:46:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:46:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:46:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:46:35,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:46:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-27 21:46:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-27 21:46:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:35,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:46:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-27 21:46:35,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-27 21:46:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-27 21:46:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-27 21:46:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:35,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-27 21:46:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-27 21:46:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-08-27 21:46:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-08-27 21:46:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:35,798 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-08-27 21:46:35,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728179036] [2020-08-27 21:46:35,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:46:35,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-27 21:46:35,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748357334] [2020-08-27 21:46:35,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-27 21:46:35,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:46:35,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-27 21:46:35,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-27 21:46:35,801 INFO L87 Difference]: Start difference. First operand 803 states and 919 transitions. Second operand 16 states. [2020-08-27 21:46:36,413 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-27 21:46:36,807 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-27 21:46:37,100 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-27 21:46:37,391 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-27 21:46:38,173 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-27 21:46:38,507 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-27 21:46:39,007 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-08-27 21:46:40,014 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-27 21:46:40,736 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:46:41,352 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-27 21:46:42,169 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-27 21:46:42,754 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-27 21:46:43,113 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:46:43,738 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:44,233 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-27 21:46:45,006 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-27 21:46:45,637 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-08-27 21:46:46,458 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-27 21:46:47,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:46:47,105 INFO L93 Difference]: Finished difference Result 1744 states and 2052 transitions. [2020-08-27 21:46:47,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-08-27 21:46:47,106 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 195 [2020-08-27 21:46:47,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:46:47,113 INFO L225 Difference]: With dead ends: 1744 [2020-08-27 21:46:47,114 INFO L226 Difference]: Without dead ends: 1044 [2020-08-27 21:46:47,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=618, Invalid=2462, Unknown=0, NotChecked=0, Total=3080 [2020-08-27 21:46:47,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2020-08-27 21:46:47,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 951. [2020-08-27 21:46:47,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 951 states. [2020-08-27 21:46:47,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1097 transitions. [2020-08-27 21:46:47,271 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1097 transitions. Word has length 195 [2020-08-27 21:46:47,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:46:47,272 INFO L479 AbstractCegarLoop]: Abstraction has 951 states and 1097 transitions. [2020-08-27 21:46:47,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-27 21:46:47,272 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1097 transitions. [2020-08-27 21:46:47,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-08-27 21:46:47,279 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:46:47,280 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:46:47,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-27 21:46:47,280 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:46:47,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:46:47,281 INFO L82 PathProgramCache]: Analyzing trace with hash -604725475, now seen corresponding path program 1 times [2020-08-27 21:46:47,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:46:47,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48285092] [2020-08-27 21:46:47,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:46:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:47,667 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:46:47,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:47,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:47,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:46:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:47,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:46:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:47,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:47,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:46:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:47,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:46:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:47,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:46:47,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:47,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-27 21:46:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:47,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:47,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:47,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-27 21:46:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:47,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:47,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:47,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:47,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:47,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:46:47,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:47,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:47,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:47,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:47,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-27 21:46:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:47,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:47,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-27 21:46:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:47,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:47,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:47,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:46:47,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:47,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-27 21:46:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:47,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:47,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:47,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-27 21:46:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:47,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:48,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:48,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-27 21:46:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:48,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:48,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-27 21:46:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:48,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:48,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:48,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-27 21:46:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:48,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:48,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:48,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:46:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:48,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-27 21:46:48,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:48,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:48,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:48,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-27 21:46:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:48,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-27 21:46:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:48,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:48,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:48,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-08-27 21:46:48,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:48,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:46:48,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:48,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-08-27 21:46:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:48,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:48,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:48,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:46:48,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:48,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:48,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:46:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:48,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:48,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:46:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:48,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:46:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:48,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-08-27 21:46:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:48,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-27 21:46:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:46:48,287 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 77 proven. 21 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2020-08-27 21:46:48,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48285092] [2020-08-27 21:46:48,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:46:48,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-27 21:46:48,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619801452] [2020-08-27 21:46:48,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-27 21:46:48,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:46:48,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-27 21:46:48,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-08-27 21:46:48,291 INFO L87 Difference]: Start difference. First operand 951 states and 1097 transitions. Second operand 16 states. [2020-08-27 21:46:48,767 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:46:49,738 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:46:51,142 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:46:51,528 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:46:51,871 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:46:52,248 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:46:52,663 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 192