/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:11:08,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:11:08,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:11:08,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:11:08,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:11:08,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:11:08,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:11:08,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:11:08,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:11:08,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:11:08,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:11:08,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:11:08,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:11:08,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:11:08,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:11:08,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:11:08,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:11:08,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:11:08,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:11:08,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:11:08,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:11:08,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:11:08,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:11:08,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:11:08,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:11:08,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:11:08,259 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:11:08,260 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:11:08,260 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:11:08,263 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:11:08,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:11:08,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:11:08,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:11:08,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:11:08,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:11:08,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:11:08,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:11:08,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:11:08,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:11:08,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:11:08,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:11:08,277 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 [2020-08-18 16:11:08,313 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:11:08,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:11:08,315 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:11:08,315 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:11:08,316 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:11:08,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:11:08,316 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:11:08,316 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:11:08,316 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:11:08,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:11:08,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:11:08,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:11:08,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:11:08,319 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:11:08,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:11:08,319 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:11:08,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:11:08,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:11:08,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:11:08,320 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:11:08,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:11:08,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:11:08,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:11:08,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:11:08,321 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:11:08,321 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:11:08,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:11:08,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:11:08,322 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:11:08,322 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true [2020-08-18 16:11:08,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:11:08,638 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:11:08,641 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:11:08,643 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:11:08,643 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:11:08,644 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product36.cil.c [2020-08-18 16:11:08,719 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8de4ec8bf/aa82c92fc548453ea8cc2bd57129f24b/FLAGd1029d717 [2020-08-18 16:11:09,225 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:11:09,230 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product36.cil.c [2020-08-18 16:11:09,250 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8de4ec8bf/aa82c92fc548453ea8cc2bd57129f24b/FLAGd1029d717 [2020-08-18 16:11:09,529 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8de4ec8bf/aa82c92fc548453ea8cc2bd57129f24b [2020-08-18 16:11:09,540 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:11:09,542 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:11:09,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:11:09,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:11:09,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:11:09,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:11:09" (1/1) ... [2020-08-18 16:11:09,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11967da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:09, skipping insertion in model container [2020-08-18 16:11:09,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:11:09" (1/1) ... [2020-08-18 16:11:09,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:11:09,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:11:09,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:11:10,091 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:11:10,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:11:10,226 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:11:10,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:10 WrapperNode [2020-08-18 16:11:10,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:11:10,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:11:10,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:11:10,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:11:10,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:10" (1/1) ... [2020-08-18 16:11:10,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:10" (1/1) ... [2020-08-18 16:11:10,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:10" (1/1) ... [2020-08-18 16:11:10,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:10" (1/1) ... [2020-08-18 16:11:10,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:10" (1/1) ... [2020-08-18 16:11:10,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:10" (1/1) ... [2020-08-18 16:11:10,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:10" (1/1) ... [2020-08-18 16:11:10,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:11:10,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:11:10,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:11:10,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:11:10,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:10" (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 [2020-08-18 16:11:10,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:11:10,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:11:10,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:11:10,390 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:11:10,398 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:11:10,398 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:11:10,398 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:11:10,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:11:10,398 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:11:10,398 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 16:11:10,399 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:11:10,399 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:11:10,399 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:11:10,399 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:11:10,399 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:11:10,399 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:11:10,400 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 16:11:10,400 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 16:11:10,400 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 16:11:10,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:11:10,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:11:10,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:11:10,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:11:10,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:11:10,401 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:11:10,401 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:11:10,401 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:11:10,401 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:11:10,401 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:11:10,401 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:11:10,401 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:11:10,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 16:11:10,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 16:11:10,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 16:11:10,402 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:11:10,402 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:11:10,402 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:11:10,402 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:11:10,402 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:11:10,402 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:11:10,403 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 16:11:10,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:11:10,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:11:10,403 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:11:10,403 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:11:10,403 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:11:10,403 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:11:10,403 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:11:10,403 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:11:10,403 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:11:10,404 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:11:10,404 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:11:10,404 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 16:11:10,404 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:11:10,404 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:11:10,404 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:11:10,404 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:11:10,405 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:11:10,405 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 16:11:10,405 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 16:11:10,405 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 16:11:10,405 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 16:11:10,405 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:11:10,406 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 16:11:10,406 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 16:11:10,406 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:11:10,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:11:10,406 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:11:10,406 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:11:10,406 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:11:10,407 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:11:10,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:11:10,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:11:10,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:11:10,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:11:10,407 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:11:10,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:11:10,408 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:11:10,408 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:11:10,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:11:10,408 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:11:10,408 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:11:10,408 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:11:10,409 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:11:10,409 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:11:10,409 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:11:10,409 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:11:10,409 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:11:10,409 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:11:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 16:11:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:11:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:11:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:11:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:11:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:11:10,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:11:11,476 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:11:11,476 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:11:11,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:11:11 BoogieIcfgContainer [2020-08-18 16:11:11,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:11:11,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:11:11,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:11:11,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:11:11,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:11:09" (1/3) ... [2020-08-18 16:11:11,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303716b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:11:11, skipping insertion in model container [2020-08-18 16:11:11,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:10" (2/3) ... [2020-08-18 16:11:11,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303716b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:11:11, skipping insertion in model container [2020-08-18 16:11:11,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:11:11" (3/3) ... [2020-08-18 16:11:11,491 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product36.cil.c [2020-08-18 16:11:11,502 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:11:11,510 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:11:11,525 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:11:11,550 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:11:11,550 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:11:11,551 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:11:11,551 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:11:11,551 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:11:11,551 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:11:11,552 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:11:11,552 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:11:11,574 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-08-18 16:11:11,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 16:11:11,585 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:11:11,587 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] [2020-08-18 16:11:11,587 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:11:11,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:11:11,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1424451371, now seen corresponding path program 1 times [2020-08-18 16:11:11,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:11:11,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216206933] [2020-08-18 16:11:11,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:11:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:12,267 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:11:12,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:12,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:11:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:12,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:12,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:11:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:12,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:11:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:12,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:12,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:12,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:11:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:12,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:12,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:11:12,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:12,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 16:11:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:12,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:11:12,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216206933] [2020-08-18 16:11:12,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:11:12,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:11:12,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398801843] [2020-08-18 16:11:12,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:11:12,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:11:12,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:11:12,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:11:12,467 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 4 states. [2020-08-18 16:11:13,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:11:13,518 INFO L93 Difference]: Finished difference Result 286 states and 369 transitions. [2020-08-18 16:11:13,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:11:13,520 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 16:11:13,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:11:13,545 INFO L225 Difference]: With dead ends: 286 [2020-08-18 16:11:13,545 INFO L226 Difference]: Without dead ends: 159 [2020-08-18 16:11:13,553 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 [2020-08-18 16:11:13,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-08-18 16:11:13,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 128. [2020-08-18 16:11:13,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-18 16:11:13,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 149 transitions. [2020-08-18 16:11:13,678 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 149 transitions. Word has length 59 [2020-08-18 16:11:13,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:11:13,678 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 149 transitions. [2020-08-18 16:11:13,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:11:13,679 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 149 transitions. [2020-08-18 16:11:13,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 16:11:13,683 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:11:13,683 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] [2020-08-18 16:11:13,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:11:13,683 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:11:13,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:11:13,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1343962066, now seen corresponding path program 1 times [2020-08-18 16:11:13,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:11:13,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023540038] [2020-08-18 16:11:13,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:11:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:14,083 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:11:14,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:14,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:11:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:14,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:14,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:11:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:14,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:11:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:14,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:14,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:11:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:14,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:14,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 16:11:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:14,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 16:11:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:14,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:11:14,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023540038] [2020-08-18 16:11:14,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:11:14,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:11:14,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097499353] [2020-08-18 16:11:14,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:11:14,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:11:14,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:11:14,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:11:14,142 INFO L87 Difference]: Start difference. First operand 128 states and 149 transitions. Second operand 5 states. [2020-08-18 16:11:14,576 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:15,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:11:15,309 INFO L93 Difference]: Finished difference Result 218 states and 267 transitions. [2020-08-18 16:11:15,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 16:11:15,310 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-18 16:11:15,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:11:15,313 INFO L225 Difference]: With dead ends: 218 [2020-08-18 16:11:15,313 INFO L226 Difference]: Without dead ends: 149 [2020-08-18 16:11:15,314 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 [2020-08-18 16:11:15,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-18 16:11:15,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2020-08-18 16:11:15,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-18 16:11:15,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 137 transitions. [2020-08-18 16:11:15,352 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 137 transitions. Word has length 60 [2020-08-18 16:11:15,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:11:15,352 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 137 transitions. [2020-08-18 16:11:15,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:11:15,353 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 137 transitions. [2020-08-18 16:11:15,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 16:11:15,355 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:11:15,355 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] [2020-08-18 16:11:15,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:11:15,355 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:11:15,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:11:15,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1988567769, now seen corresponding path program 1 times [2020-08-18 16:11:15,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:11:15,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341975993] [2020-08-18 16:11:15,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:11:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:15,727 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:11:15,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:15,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:11:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:15,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:15,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:11:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:15,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:11:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:15,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:15,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:11:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:15,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:15,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 16:11:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:15,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 16:11:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:15,831 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:11:15,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341975993] [2020-08-18 16:11:15,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:11:15,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:11:15,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275117029] [2020-08-18 16:11:15,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:11:15,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:11:15,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:11:15,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:11:15,834 INFO L87 Difference]: Start difference. First operand 119 states and 137 transitions. Second operand 9 states. [2020-08-18 16:11:16,252 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:11:16,586 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:16,840 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:17,096 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:18,052 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:19,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:11:19,304 INFO L93 Difference]: Finished difference Result 402 states and 496 transitions. [2020-08-18 16:11:19,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 16:11:19,305 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-18 16:11:19,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:11:19,309 INFO L225 Difference]: With dead ends: 402 [2020-08-18 16:11:19,310 INFO L226 Difference]: Without dead ends: 311 [2020-08-18 16:11:19,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:11:19,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-08-18 16:11:19,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 242. [2020-08-18 16:11:19,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-08-18 16:11:19,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 290 transitions. [2020-08-18 16:11:19,380 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 290 transitions. Word has length 65 [2020-08-18 16:11:19,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:11:19,380 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 290 transitions. [2020-08-18 16:11:19,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:11:19,380 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 290 transitions. [2020-08-18 16:11:19,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 16:11:19,383 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:11:19,384 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:11:19,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:11:19,384 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:11:19,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:11:19,384 INFO L82 PathProgramCache]: Analyzing trace with hash 827482166, now seen corresponding path program 1 times [2020-08-18 16:11:19,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:11:19,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925742286] [2020-08-18 16:11:19,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:11:19,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:19,697 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:11:19,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:19,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:11:19,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:19,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:19,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:19,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:11:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:19,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:11:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:19,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:19,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:19,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:11:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:19,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:11:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:19,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:19,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 16:11:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:19,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 16:11:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:19,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 16:11:19,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925742286] [2020-08-18 16:11:19,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:11:19,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:11:19,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194733636] [2020-08-18 16:11:19,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:11:19,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:11:19,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:11:19,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:11:19,845 INFO L87 Difference]: Start difference. First operand 242 states and 290 transitions. Second operand 9 states. [2020-08-18 16:11:20,199 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:11:20,945 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:21,767 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:11:22,084 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:22,376 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:22,658 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:23,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:11:23,256 INFO L93 Difference]: Finished difference Result 631 states and 816 transitions. [2020-08-18 16:11:23,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 16:11:23,257 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-18 16:11:23,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:11:23,263 INFO L225 Difference]: With dead ends: 631 [2020-08-18 16:11:23,263 INFO L226 Difference]: Without dead ends: 417 [2020-08-18 16:11:23,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 16:11:23,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-08-18 16:11:23,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 353. [2020-08-18 16:11:23,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-08-18 16:11:23,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 423 transitions. [2020-08-18 16:11:23,346 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 423 transitions. Word has length 70 [2020-08-18 16:11:23,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:11:23,347 INFO L479 AbstractCegarLoop]: Abstraction has 353 states and 423 transitions. [2020-08-18 16:11:23,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:11:23,347 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 423 transitions. [2020-08-18 16:11:23,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 16:11:23,350 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:11:23,350 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] [2020-08-18 16:11:23,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:11:23,351 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:11:23,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:11:23,351 INFO L82 PathProgramCache]: Analyzing trace with hash 361073596, now seen corresponding path program 1 times [2020-08-18 16:11:23,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:11:23,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483946014] [2020-08-18 16:11:23,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:11:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:23,709 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:11:23,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:23,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:11:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:23,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:23,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:23,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:11:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:23,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:11:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:23,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:23,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:11:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:23,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:23,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 16:11:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:23,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:23,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:23,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:11:23,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:23,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 16:11:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:23,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 16:11:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:23,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:11:23,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483946014] [2020-08-18 16:11:23,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:11:23,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:11:23,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491496988] [2020-08-18 16:11:23,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:11:23,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:11:23,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:11:23,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:11:23,910 INFO L87 Difference]: Start difference. First operand 353 states and 423 transitions. Second operand 9 states. [2020-08-18 16:11:24,275 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:11:25,356 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:25,625 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:11:25,896 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:26,169 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:27,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:11:27,202 INFO L93 Difference]: Finished difference Result 1112 states and 1489 transitions. [2020-08-18 16:11:27,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 16:11:27,209 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-18 16:11:27,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:11:27,214 INFO L225 Difference]: With dead ends: 1112 [2020-08-18 16:11:27,215 INFO L226 Difference]: Without dead ends: 787 [2020-08-18 16:11:27,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:11:27,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-08-18 16:11:27,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 665. [2020-08-18 16:11:27,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-08-18 16:11:27,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 802 transitions. [2020-08-18 16:11:27,359 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 802 transitions. Word has length 88 [2020-08-18 16:11:27,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:11:27,359 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 802 transitions. [2020-08-18 16:11:27,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:11:27,360 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 802 transitions. [2020-08-18 16:11:27,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 16:11:27,362 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:11:27,362 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] [2020-08-18 16:11:27,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:11:27,363 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:11:27,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:11:27,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1750216773, now seen corresponding path program 1 times [2020-08-18 16:11:27,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:11:27,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530789894] [2020-08-18 16:11:27,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:11:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:27,657 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:11:27,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:27,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:11:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:27,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:27,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:11:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:27,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:11:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:27,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:27,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:11:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:27,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:27,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 16:11:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:27,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:27,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:27,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:11:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:27,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 16:11:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:27,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 16:11:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:27,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:11:27,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530789894] [2020-08-18 16:11:27,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:11:27,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:11:27,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089517886] [2020-08-18 16:11:27,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:11:27,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:11:27,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:11:27,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:11:27,815 INFO L87 Difference]: Start difference. First operand 665 states and 802 transitions. Second operand 9 states. [2020-08-18 16:11:28,869 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:29,136 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 16:11:29,415 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:29,668 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:30,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:11:30,256 INFO L93 Difference]: Finished difference Result 1429 states and 1823 transitions. [2020-08-18 16:11:30,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:11:30,257 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-18 16:11:30,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:11:30,262 INFO L225 Difference]: With dead ends: 1429 [2020-08-18 16:11:30,262 INFO L226 Difference]: Without dead ends: 792 [2020-08-18 16:11:30,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:11:30,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2020-08-18 16:11:30,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 685. [2020-08-18 16:11:30,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 685 states. [2020-08-18 16:11:30,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 822 transitions. [2020-08-18 16:11:30,426 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 822 transitions. Word has length 88 [2020-08-18 16:11:30,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:11:30,426 INFO L479 AbstractCegarLoop]: Abstraction has 685 states and 822 transitions. [2020-08-18 16:11:30,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:11:30,427 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 822 transitions. [2020-08-18 16:11:30,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 16:11:30,434 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:11:30,435 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] [2020-08-18 16:11:30,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:11:30,435 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:11:30,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:11:30,436 INFO L82 PathProgramCache]: Analyzing trace with hash -364013379, now seen corresponding path program 1 times [2020-08-18 16:11:30,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:11:30,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524134914] [2020-08-18 16:11:30,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:11:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:30,722 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:11:30,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:30,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:11:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:30,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:30,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:11:30,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:30,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:11:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:30,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:30,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:11:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:30,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:30,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 16:11:30,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:30,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:30,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:30,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:11:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:30,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 16:11:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:30,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 16:11:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:30,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:11:30,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524134914] [2020-08-18 16:11:30,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:11:30,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 16:11:30,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472199543] [2020-08-18 16:11:30,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 16:11:30,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:11:30,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 16:11:30,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:11:30,880 INFO L87 Difference]: Start difference. First operand 685 states and 822 transitions. Second operand 11 states. [2020-08-18 16:11:31,328 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:31,563 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:31,800 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:32,582 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:32,849 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:33,095 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:33,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:11:33,785 INFO L93 Difference]: Finished difference Result 1290 states and 1630 transitions. [2020-08-18 16:11:33,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 16:11:33,786 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2020-08-18 16:11:33,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:11:33,791 INFO L225 Difference]: With dead ends: 1290 [2020-08-18 16:11:33,791 INFO L226 Difference]: Without dead ends: 633 [2020-08-18 16:11:33,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:11:33,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2020-08-18 16:11:33,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 556. [2020-08-18 16:11:33,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-08-18 16:11:33,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 650 transitions. [2020-08-18 16:11:33,944 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 650 transitions. Word has length 88 [2020-08-18 16:11:33,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:11:33,945 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 650 transitions. [2020-08-18 16:11:33,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 16:11:33,945 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 650 transitions. [2020-08-18 16:11:33,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 16:11:33,949 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:11:33,949 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] [2020-08-18 16:11:33,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:11:33,950 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:11:33,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:11:33,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1797836392, now seen corresponding path program 1 times [2020-08-18 16:11:33,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:11:33,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087303478] [2020-08-18 16:11:33,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:11:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:34,362 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:11:34,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:34,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:11:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:34,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:34,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:11:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:34,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:11:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:34,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:34,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:11:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:34,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 16:11:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:34,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:34,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 16:11:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:34,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:34,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:34,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:11:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:34,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 16:11:34,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:34,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 16:11:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:34,528 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:11:34,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087303478] [2020-08-18 16:11:34,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:11:34,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 16:11:34,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716193191] [2020-08-18 16:11:34,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:11:34,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:11:34,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:11:34,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:11:34,533 INFO L87 Difference]: Start difference. First operand 556 states and 650 transitions. Second operand 12 states. [2020-08-18 16:11:34,968 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:11:35,604 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:11:36,300 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:36,643 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:36,888 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:11:37,180 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:37,483 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:38,901 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:11:39,171 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:39,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:11:39,691 INFO L93 Difference]: Finished difference Result 1629 states and 2065 transitions. [2020-08-18 16:11:39,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 16:11:39,692 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 92 [2020-08-18 16:11:39,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:11:39,700 INFO L225 Difference]: With dead ends: 1629 [2020-08-18 16:11:39,700 INFO L226 Difference]: Without dead ends: 1277 [2020-08-18 16:11:39,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 16:11:39,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2020-08-18 16:11:39,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1157. [2020-08-18 16:11:39,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2020-08-18 16:11:39,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1355 transitions. [2020-08-18 16:11:39,899 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1355 transitions. Word has length 92 [2020-08-18 16:11:39,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:11:39,901 INFO L479 AbstractCegarLoop]: Abstraction has 1157 states and 1355 transitions. [2020-08-18 16:11:39,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:11:39,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1355 transitions. [2020-08-18 16:11:39,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-18 16:11:39,906 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:11:39,906 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:11:39,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:11:39,906 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:11:39,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:11:39,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1966372220, now seen corresponding path program 1 times [2020-08-18 16:11:39,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:11:39,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560724989] [2020-08-18 16:11:39,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:11:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:40,214 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:11:40,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:40,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:11:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:40,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:40,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:11:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:40,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:11:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:40,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:40,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:11:40,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:40,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 16:11:40,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:40,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:40,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:40,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 16:11:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:40,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:40,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:40,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:11:40,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:40,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:11:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:40,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:40,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 16:11:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:40,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:40,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 16:11:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:40,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 16:11:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:40,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:40,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-18 16:11:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:40,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 16:11:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:40,515 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-18 16:11:40,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560724989] [2020-08-18 16:11:40,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:11:40,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 16:11:40,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44918379] [2020-08-18 16:11:40,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 16:11:40,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:11:40,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 16:11:40,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:11:40,517 INFO L87 Difference]: Start difference. First operand 1157 states and 1355 transitions. Second operand 16 states. [2020-08-18 16:11:41,031 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 16:11:41,397 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-18 16:11:41,679 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 16:11:41,949 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 16:11:42,619 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-08-18 16:11:42,986 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-18 16:11:43,312 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 16:11:43,727 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 16:11:44,089 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 16:11:45,073 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:11:46,190 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-18 16:11:46,714 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-18 16:11:47,038 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:11:47,741 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-08-18 16:11:48,657 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-18 16:11:48,889 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:49,190 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-18 16:11:49,483 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 16:11:50,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:11:50,237 INFO L93 Difference]: Finished difference Result 2376 states and 2878 transitions. [2020-08-18 16:11:50,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-08-18 16:11:50,237 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 136 [2020-08-18 16:11:50,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:11:50,245 INFO L225 Difference]: With dead ends: 2376 [2020-08-18 16:11:50,246 INFO L226 Difference]: Without dead ends: 1417 [2020-08-18 16:11:50,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=630, Invalid=2562, Unknown=0, NotChecked=0, Total=3192 [2020-08-18 16:11:50,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2020-08-18 16:11:50,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 1269. [2020-08-18 16:11:50,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1269 states. [2020-08-18 16:11:50,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1463 transitions. [2020-08-18 16:11:50,525 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1463 transitions. Word has length 136 [2020-08-18 16:11:50,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:11:50,526 INFO L479 AbstractCegarLoop]: Abstraction has 1269 states and 1463 transitions. [2020-08-18 16:11:50,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 16:11:50,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1463 transitions. [2020-08-18 16:11:50,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-08-18 16:11:50,536 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:11:50,536 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:11:50,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 16:11:50,537 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:11:50,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:11:50,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1880321482, now seen corresponding path program 1 times [2020-08-18 16:11:50,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:11:50,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833514763] [2020-08-18 16:11:50,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:11:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:50,860 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:11:50,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:50,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:11:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:50,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:50,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:11:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:50,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:11:50,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:50,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:50,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:11:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:50,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 16:11:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:50,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:50,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:50,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 16:11:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:50,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:50,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:50,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:50,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:11:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:50,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:11:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:50,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:50,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:50,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 16:11:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 16:11:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:51,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-18 16:11:51,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 16:11:51,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 16:11:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:51,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-08-18 16:11:51,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-08-18 16:11:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:11:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 16:11:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-18 16:11:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,270 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 81 proven. 31 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-08-18 16:11:51,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833514763] [2020-08-18 16:11:51,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:11:51,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 16:11:51,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446286237] [2020-08-18 16:11:51,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 16:11:51,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:11:51,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 16:11:51,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:11:51,274 INFO L87 Difference]: Start difference. First operand 1269 states and 1463 transitions. Second operand 16 states. [2020-08-18 16:11:52,781 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:53,028 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:11:53,319 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:11:53,590 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:11:53,840 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:11:54,532 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:11:55,081 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-18 16:11:55,553 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-18 16:11:56,146 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:58,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:11:58,133 INFO L93 Difference]: Finished difference Result 3631 states and 4392 transitions. [2020-08-18 16:11:58,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-18 16:11:58,133 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 244 [2020-08-18 16:11:58,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:11:58,146 INFO L225 Difference]: With dead ends: 3631 [2020-08-18 16:11:58,147 INFO L226 Difference]: Without dead ends: 2241 [2020-08-18 16:11:58,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=449, Invalid=1807, Unknown=0, NotChecked=0, Total=2256 [2020-08-18 16:11:58,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2241 states. [2020-08-18 16:11:58,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2241 to 1858. [2020-08-18 16:11:58,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1858 states. [2020-08-18 16:11:58,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2154 transitions. [2020-08-18 16:11:58,642 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2154 transitions. Word has length 244 [2020-08-18 16:11:58,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:11:58,644 INFO L479 AbstractCegarLoop]: Abstraction has 1858 states and 2154 transitions. [2020-08-18 16:11:58,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 16:11:58,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2154 transitions. [2020-08-18 16:11:58,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-08-18 16:11:58,651 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:11:58,652 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:11:58,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 16:11:58,652 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:11:58,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:11:58,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1137238651, now seen corresponding path program 1 times [2020-08-18 16:11:58,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:11:58,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144902323] [2020-08-18 16:11:58,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:11:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:58,947 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:11:58,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:58,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:11:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:58,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:58,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:11:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:11:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:59,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:11:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 16:11:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 16:11:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:11:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:11:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 16:11:59,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 16:11:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:11:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-18 16:11:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 16:11:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-08-18 16:11:59,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-08-18 16:11:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-08-18 16:11:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:11:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-18 16:11:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-18 16:11:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:59,445 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 90 proven. 31 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-08-18 16:11:59,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144902323] [2020-08-18 16:11:59,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:11:59,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 16:11:59,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256092318] [2020-08-18 16:11:59,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 16:11:59,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:11:59,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 16:11:59,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-08-18 16:11:59,450 INFO L87 Difference]: Start difference. First operand 1858 states and 2154 transitions. Second operand 17 states. [2020-08-18 16:12:00,390 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:00,749 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 16:12:01,021 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:12:01,277 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:12:02,044 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:02,931 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:03,279 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:03,524 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:04,357 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:05,027 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:05,271 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:06,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:12:06,192 INFO L93 Difference]: Finished difference Result 3499 states and 4139 transitions. [2020-08-18 16:12:06,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 16:12:06,193 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 250 [2020-08-18 16:12:06,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:12:06,205 INFO L225 Difference]: With dead ends: 3499 [2020-08-18 16:12:06,205 INFO L226 Difference]: Without dead ends: 1909 [2020-08-18 16:12:06,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=385, Invalid=1507, Unknown=0, NotChecked=0, Total=1892 [2020-08-18 16:12:06,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1909 states. [2020-08-18 16:12:06,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1909 to 1807. [2020-08-18 16:12:06,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1807 states. [2020-08-18 16:12:06,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 2067 transitions. [2020-08-18 16:12:06,608 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 2067 transitions. Word has length 250 [2020-08-18 16:12:06,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:12:06,609 INFO L479 AbstractCegarLoop]: Abstraction has 1807 states and 2067 transitions. [2020-08-18 16:12:06,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 16:12:06,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 2067 transitions. [2020-08-18 16:12:06,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-08-18 16:12:06,618 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:06,618 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:12:06,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 16:12:06,618 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:06,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:06,619 INFO L82 PathProgramCache]: Analyzing trace with hash 507686355, now seen corresponding path program 1 times [2020-08-18 16:12:06,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:06,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781722102] [2020-08-18 16:12:06,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat