/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 03:39:58,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:39:58,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:39:58,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:39:58,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:39:58,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:39:58,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:39:58,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:39:58,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:39:58,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:39:58,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:39:58,260 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:39:58,260 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:39:58,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:39:58,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:39:58,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:39:58,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:39:58,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:39:58,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:39:58,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:39:58,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:39:58,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:39:58,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:39:58,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:39:58,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:39:58,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:39:58,303 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:39:58,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:39:58,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:39:58,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 03:39:58,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 03:39:58,308 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 03:39:58,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 03:39:58,310 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 03:39:58,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 03:39:58,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 03:39:58,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 03:39:58,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 03:39:58,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:39:58,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:39:58,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:39:58,318 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 [2020-08-22 03:39:58,359 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:39:58,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:39:58,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:39:58,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:39:58,362 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:39:58,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:39:58,362 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:39:58,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:39:58,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:39:58,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:39:58,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:39:58,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:39:58,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:39:58,365 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:39:58,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:39:58,365 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:39:58,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:39:58,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:39:58,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:39:58,366 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:39:58,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:39:58,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:39:58,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:39:58,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:39:58,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:39:58,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:39:58,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:39:58,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:39:58,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:39:58,368 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-08-22 03:39:58,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:39:58,656 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:39:58,660 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:39:58,661 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:39:58,662 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:39:58,662 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product62.cil.c [2020-08-22 03:39:58,728 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1bf775f75/d2e5bfbc21c2433eb4c943bb36c0e05f/FLAG86ee69352 [2020-08-22 03:39:59,315 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:39:59,318 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product62.cil.c [2020-08-22 03:39:59,332 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1bf775f75/d2e5bfbc21c2433eb4c943bb36c0e05f/FLAG86ee69352 [2020-08-22 03:39:59,558 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1bf775f75/d2e5bfbc21c2433eb4c943bb36c0e05f [2020-08-22 03:39:59,567 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:39:59,569 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:39:59,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:39:59,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:39:59,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:39:59,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:39:59" (1/1) ... [2020-08-22 03:39:59,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2894617f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:39:59, skipping insertion in model container [2020-08-22 03:39:59,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:39:59" (1/1) ... [2020-08-22 03:39:59,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:39:59,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:39:59,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:40:00,010 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:40:00,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:40:00,246 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:40:00,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:40:00 WrapperNode [2020-08-22 03:40:00,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:40:00,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:40:00,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:40:00,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:40:00,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:40:00" (1/1) ... [2020-08-22 03:40:00,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:40:00" (1/1) ... [2020-08-22 03:40:00,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:40:00" (1/1) ... [2020-08-22 03:40:00,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:40:00" (1/1) ... [2020-08-22 03:40:00,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:40:00" (1/1) ... [2020-08-22 03:40:00,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:40:00" (1/1) ... [2020-08-22 03:40:00,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:40:00" (1/1) ... [2020-08-22 03:40:00,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:40:00,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:40:00,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:40:00,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:40:00,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:40:00" (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 [2020-08-22 03:40:00,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:40:00,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:40:00,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 03:40:00,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 03:40:00,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 03:40:00,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 03:40:00,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 03:40:00,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 03:40:00,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 03:40:00,418 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 03:40:00,418 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 03:40:00,418 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 03:40:00,419 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 03:40:00,419 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:40:00,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 03:40:00,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-22 03:40:00,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-22 03:40:00,419 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 03:40:00,420 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 03:40:00,420 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 03:40:00,420 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 03:40:00,420 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 03:40:00,420 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 03:40:00,420 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 03:40:00,420 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 03:40:00,421 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 03:40:00,421 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 03:40:00,421 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 03:40:00,421 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 03:40:00,421 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 03:40:00,421 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 03:40:00,422 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 03:40:00,422 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 03:40:00,422 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 03:40:00,422 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 03:40:00,422 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 03:40:00,422 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 03:40:00,423 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 03:40:00,423 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 03:40:00,423 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 03:40:00,423 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 03:40:00,423 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 03:40:00,423 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 03:40:00,423 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 03:40:00,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:40:00,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 03:40:00,424 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 03:40:00,424 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 03:40:00,424 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 03:40:00,424 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 03:40:00,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 03:40:00,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 03:40:00,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 03:40:00,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 03:40:00,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 03:40:00,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 03:40:00,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 03:40:00,426 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 03:40:00,426 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 03:40:00,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 03:40:00,426 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 03:40:00,426 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 03:40:00,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 03:40:00,427 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 03:40:00,427 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 03:40:00,427 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 03:40:00,427 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 03:40:00,427 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 03:40:00,427 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 03:40:00,428 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 03:40:00,428 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 03:40:00,428 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-22 03:40:00,428 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 03:40:00,428 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 03:40:00,428 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 03:40:00,428 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 03:40:00,429 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 03:40:00,429 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:40:00,429 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 03:40:00,429 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 03:40:00,429 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 03:40:00,429 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-22 03:40:00,430 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 03:40:00,430 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 03:40:00,430 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 03:40:00,430 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 03:40:00,430 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 03:40:00,430 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 03:40:00,430 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 03:40:00,431 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 03:40:00,431 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 03:40:00,431 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 03:40:00,431 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 03:40:00,431 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 03:40:00,431 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 03:40:00,431 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 03:40:00,432 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 03:40:00,432 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 03:40:00,432 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 03:40:00,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:40:00,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 03:40:00,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:40:01,517 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:40:01,518 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 03:40:01,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:40:01 BoogieIcfgContainer [2020-08-22 03:40:01,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:40:01,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:40:01,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:40:01,528 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:40:01,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:39:59" (1/3) ... [2020-08-22 03:40:01,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c95bb22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:40:01, skipping insertion in model container [2020-08-22 03:40:01,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:40:00" (2/3) ... [2020-08-22 03:40:01,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c95bb22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:40:01, skipping insertion in model container [2020-08-22 03:40:01,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:40:01" (3/3) ... [2020-08-22 03:40:01,532 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product62.cil.c [2020-08-22 03:40:01,543 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:40:01,552 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 03:40:01,566 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 03:40:01,592 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:40:01,593 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:40:01,593 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:40:01,593 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:40:01,594 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:40:01,594 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:40:01,594 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:40:01,594 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:40:01,618 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states. [2020-08-22 03:40:01,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 03:40:01,630 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:40:01,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:40:01,631 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:40:01,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:40:01,638 INFO L82 PathProgramCache]: Analyzing trace with hash -519940638, now seen corresponding path program 1 times [2020-08-22 03:40:01,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:40:01,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612727233] [2020-08-22 03:40:01,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:40:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:02,316 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:40:02,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:40:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:02,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:40:02,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:02,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:40:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:02,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:40:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:02,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:40:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:02,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 03:40:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:02,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 03:40:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:02,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 03:40:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:02,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:40:02,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612727233] [2020-08-22 03:40:02,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:40:02,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 03:40:02,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624046667] [2020-08-22 03:40:02,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 03:40:02,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:40:02,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 03:40:02,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:40:02,479 INFO L87 Difference]: Start difference. First operand 202 states. Second operand 4 states. [2020-08-22 03:40:03,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:40:03,869 INFO L93 Difference]: Finished difference Result 354 states and 460 transitions. [2020-08-22 03:40:03,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 03:40:03,871 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-22 03:40:03,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:40:03,902 INFO L225 Difference]: With dead ends: 354 [2020-08-22 03:40:03,902 INFO L226 Difference]: Without dead ends: 196 [2020-08-22 03:40:03,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:40:03,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-22 03:40:04,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 159. [2020-08-22 03:40:04,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-08-22 03:40:04,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 189 transitions. [2020-08-22 03:40:04,010 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 189 transitions. Word has length 51 [2020-08-22 03:40:04,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:40:04,013 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 189 transitions. [2020-08-22 03:40:04,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 03:40:04,013 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 189 transitions. [2020-08-22 03:40:04,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 03:40:04,018 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:40:04,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:40:04,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:40:04,019 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:40:04,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:40:04,019 INFO L82 PathProgramCache]: Analyzing trace with hash -183354494, now seen corresponding path program 1 times [2020-08-22 03:40:04,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:40:04,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085957663] [2020-08-22 03:40:04,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:40:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:04,379 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:40:04,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:40:04,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:04,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:40:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:04,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:40:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:04,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:40:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:04,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:40:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:04,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 03:40:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:04,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 03:40:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:04,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 03:40:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:04,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:40:04,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085957663] [2020-08-22 03:40:04,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:40:04,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:40:04,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398765690] [2020-08-22 03:40:04,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:40:04,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:40:04,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:40:04,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:40:04,441 INFO L87 Difference]: Start difference. First operand 159 states and 189 transitions. Second operand 5 states. [2020-08-22 03:40:04,928 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:40:06,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:40:06,120 INFO L93 Difference]: Finished difference Result 295 states and 367 transitions. [2020-08-22 03:40:06,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 03:40:06,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-22 03:40:06,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:40:06,125 INFO L225 Difference]: With dead ends: 295 [2020-08-22 03:40:06,125 INFO L226 Difference]: Without dead ends: 186 [2020-08-22 03:40:06,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 03:40:06,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-22 03:40:06,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 150. [2020-08-22 03:40:06,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-22 03:40:06,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 177 transitions. [2020-08-22 03:40:06,193 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 177 transitions. Word has length 52 [2020-08-22 03:40:06,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:40:06,194 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 177 transitions. [2020-08-22 03:40:06,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:40:06,194 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 177 transitions. [2020-08-22 03:40:06,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 03:40:06,206 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:40:06,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:40:06,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:40:06,207 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:40:06,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:40:06,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1707012514, now seen corresponding path program 1 times [2020-08-22 03:40:06,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:40:06,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563615905] [2020-08-22 03:40:06,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:40:06,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:06,649 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:40:06,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:40:06,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:06,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:40:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:06,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:40:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:06,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:40:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:06,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:40:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:06,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 03:40:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:06,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 03:40:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:06,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 03:40:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:06,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:40:06,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563615905] [2020-08-22 03:40:06,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:40:06,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 03:40:06,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166483490] [2020-08-22 03:40:06,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 03:40:06,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:40:06,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 03:40:06,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 03:40:06,768 INFO L87 Difference]: Start difference. First operand 150 states and 177 transitions. Second operand 9 states. [2020-08-22 03:40:07,141 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:40:07,455 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:40:07,727 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:40:07,971 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:40:09,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:40:09,483 INFO L93 Difference]: Finished difference Result 308 states and 386 transitions. [2020-08-22 03:40:09,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 03:40:09,487 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-22 03:40:09,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:40:09,490 INFO L225 Difference]: With dead ends: 308 [2020-08-22 03:40:09,490 INFO L226 Difference]: Without dead ends: 186 [2020-08-22 03:40:09,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-22 03:40:09,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-22 03:40:09,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 150. [2020-08-22 03:40:09,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-22 03:40:09,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 176 transitions. [2020-08-22 03:40:09,534 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 176 transitions. Word has length 57 [2020-08-22 03:40:09,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:40:09,535 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 176 transitions. [2020-08-22 03:40:09,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 03:40:09,535 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 176 transitions. [2020-08-22 03:40:09,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-22 03:40:09,537 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:40:09,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:40:09,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 03:40:09,537 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:40:09,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:40:09,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1819519357, now seen corresponding path program 1 times [2020-08-22 03:40:09,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:40:09,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204895239] [2020-08-22 03:40:09,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:40:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:09,812 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:40:09,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:40:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:09,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:40:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:09,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:40:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:09,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:40:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:09,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:40:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:09,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 03:40:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:09,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 03:40:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:09,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:40:09,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:09,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:40:09,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:09,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:40:09,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:09,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-22 03:40:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:09,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 03:40:09,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:09,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:40:09,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204895239] [2020-08-22 03:40:09,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:40:09,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 03:40:09,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507236964] [2020-08-22 03:40:09,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 03:40:09,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:40:09,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 03:40:09,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 03:40:09,950 INFO L87 Difference]: Start difference. First operand 150 states and 176 transitions. Second operand 7 states. [2020-08-22 03:40:10,285 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:40:11,566 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:40:12,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:40:12,498 INFO L93 Difference]: Finished difference Result 418 states and 526 transitions. [2020-08-22 03:40:12,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 03:40:12,499 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 75 [2020-08-22 03:40:12,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:40:12,503 INFO L225 Difference]: With dead ends: 418 [2020-08-22 03:40:12,504 INFO L226 Difference]: Without dead ends: 296 [2020-08-22 03:40:12,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-22 03:40:12,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-08-22 03:40:12,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 247. [2020-08-22 03:40:12,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-08-22 03:40:12,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 282 transitions. [2020-08-22 03:40:12,577 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 282 transitions. Word has length 75 [2020-08-22 03:40:12,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:40:12,577 INFO L479 AbstractCegarLoop]: Abstraction has 247 states and 282 transitions. [2020-08-22 03:40:12,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 03:40:12,577 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 282 transitions. [2020-08-22 03:40:12,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-22 03:40:12,579 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:40:12,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:40:12,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 03:40:12,579 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:40:12,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:40:12,580 INFO L82 PathProgramCache]: Analyzing trace with hash 948942276, now seen corresponding path program 1 times [2020-08-22 03:40:12,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:40:12,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004565949] [2020-08-22 03:40:12,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:40:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:12,890 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:40:12,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:40:12,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:12,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:40:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:12,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:40:12,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:12,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:40:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:12,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:40:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:12,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 03:40:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:12,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 03:40:12,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:12,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:40:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:12,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:40:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:12,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:40:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:12,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:40:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:12,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:40:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:12,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 03:40:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:12,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 03:40:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:13,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:40:13,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004565949] [2020-08-22 03:40:13,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:40:13,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 03:40:13,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739628874] [2020-08-22 03:40:13,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 03:40:13,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:40:13,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 03:40:13,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 03:40:13,010 INFO L87 Difference]: Start difference. First operand 247 states and 282 transitions. Second operand 9 states. [2020-08-22 03:40:13,353 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:40:14,452 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:40:14,785 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:40:15,422 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:40:15,680 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:40:17,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:40:17,060 INFO L93 Difference]: Finished difference Result 737 states and 912 transitions. [2020-08-22 03:40:17,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 03:40:17,062 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-08-22 03:40:17,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:40:17,068 INFO L225 Difference]: With dead ends: 737 [2020-08-22 03:40:17,068 INFO L226 Difference]: Without dead ends: 518 [2020-08-22 03:40:17,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-22 03:40:17,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2020-08-22 03:40:17,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 442. [2020-08-22 03:40:17,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-08-22 03:40:17,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 504 transitions. [2020-08-22 03:40:17,193 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 504 transitions. Word has length 89 [2020-08-22 03:40:17,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:40:17,194 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 504 transitions. [2020-08-22 03:40:17,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 03:40:17,194 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 504 transitions. [2020-08-22 03:40:17,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 03:40:17,196 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:40:17,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:40:17,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 03:40:17,197 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:40:17,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:40:17,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1944159016, now seen corresponding path program 1 times [2020-08-22 03:40:17,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:40:17,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871411697] [2020-08-22 03:40:17,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:40:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:17,477 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:40:17,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:40:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:17,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:40:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:17,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:40:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:17,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:40:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:17,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:40:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:17,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 03:40:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:17,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 03:40:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:17,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 03:40:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:17,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:40:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:17,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:40:17,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:17,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:40:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:17,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:40:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:17,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:40:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:17,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 03:40:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:17,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 03:40:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:17,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:40:17,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871411697] [2020-08-22 03:40:17,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:40:17,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 03:40:17,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871022637] [2020-08-22 03:40:17,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 03:40:17,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:40:17,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 03:40:17,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 03:40:17,653 INFO L87 Difference]: Start difference. First operand 442 states and 504 transitions. Second operand 10 states. [2020-08-22 03:40:18,070 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:40:19,305 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:40:20,519 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:40:20,778 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:40:21,069 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:40:21,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:40:21,534 INFO L93 Difference]: Finished difference Result 970 states and 1183 transitions. [2020-08-22 03:40:21,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 03:40:21,535 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2020-08-22 03:40:21,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:40:21,542 INFO L225 Difference]: With dead ends: 970 [2020-08-22 03:40:21,543 INFO L226 Difference]: Without dead ends: 556 [2020-08-22 03:40:21,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-22 03:40:21,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2020-08-22 03:40:21,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 441. [2020-08-22 03:40:21,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-08-22 03:40:21,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 501 transitions. [2020-08-22 03:40:21,676 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 501 transitions. Word has length 93 [2020-08-22 03:40:21,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:40:21,678 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 501 transitions. [2020-08-22 03:40:21,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 03:40:21,678 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 501 transitions. [2020-08-22 03:40:21,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-22 03:40:21,681 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:40:21,681 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:40:21,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 03:40:21,682 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:40:21,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:40:21,682 INFO L82 PathProgramCache]: Analyzing trace with hash -412136482, now seen corresponding path program 1 times [2020-08-22 03:40:21,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:40:21,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939055484] [2020-08-22 03:40:21,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:40:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:21,975 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:40:21,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:40:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:21,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:40:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:21,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:40:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:21,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:40:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:22,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:40:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:22,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 03:40:22,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:22,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 03:40:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:22,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 03:40:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:22,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:40:22,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:22,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:40:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:22,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:40:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:22,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:40:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:22,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:40:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:22,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:40:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:22,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:40:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:22,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:40:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:22,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 03:40:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:22,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 03:40:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:22,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 03:40:22,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939055484] [2020-08-22 03:40:22,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:40:22,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 03:40:22,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89912009] [2020-08-22 03:40:22,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 03:40:22,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:40:22,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 03:40:22,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 03:40:22,165 INFO L87 Difference]: Start difference. First operand 441 states and 501 transitions. Second operand 10 states. [2020-08-22 03:40:23,198 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:40:23,444 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 03:40:23,700 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:40:23,942 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:40:25,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:40:25,316 INFO L93 Difference]: Finished difference Result 977 states and 1216 transitions. [2020-08-22 03:40:25,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 03:40:25,317 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 109 [2020-08-22 03:40:25,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:40:25,323 INFO L225 Difference]: With dead ends: 977 [2020-08-22 03:40:25,323 INFO L226 Difference]: Without dead ends: 564 [2020-08-22 03:40:25,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-22 03:40:25,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-08-22 03:40:25,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 451. [2020-08-22 03:40:25,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2020-08-22 03:40:25,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 511 transitions. [2020-08-22 03:40:25,459 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 511 transitions. Word has length 109 [2020-08-22 03:40:25,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:40:25,459 INFO L479 AbstractCegarLoop]: Abstraction has 451 states and 511 transitions. [2020-08-22 03:40:25,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 03:40:25,460 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 511 transitions. [2020-08-22 03:40:25,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-22 03:40:25,463 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:40:25,464 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:40:25,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 03:40:25,465 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:40:25,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:40:25,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1527025564, now seen corresponding path program 1 times [2020-08-22 03:40:25,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:40:25,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706792851] [2020-08-22 03:40:25,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:40:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:25,856 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:40:25,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:40:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:25,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:40:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:25,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:40:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:25,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:40:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:25,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:40:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:25,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 03:40:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:25,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 03:40:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:25,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 03:40:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:25,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:40:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:25,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:40:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:25,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:40:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:25,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:40:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:26,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:40:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:26,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:40:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:26,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:40:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:26,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:40:26,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:26,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 03:40:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:26,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 03:40:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:26,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 03:40:26,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706792851] [2020-08-22 03:40:26,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:40:26,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 03:40:26,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938995840] [2020-08-22 03:40:26,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 03:40:26,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:40:26,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 03:40:26,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-22 03:40:26,047 INFO L87 Difference]: Start difference. First operand 451 states and 511 transitions. Second operand 12 states. [2020-08-22 03:40:26,569 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:40:26,832 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:40:27,075 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:40:27,792 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:40:28,052 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:40:28,300 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:40:29,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:40:29,871 INFO L93 Difference]: Finished difference Result 997 states and 1238 transitions. [2020-08-22 03:40:29,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 03:40:29,872 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-08-22 03:40:29,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:40:29,877 INFO L225 Difference]: With dead ends: 997 [2020-08-22 03:40:29,878 INFO L226 Difference]: Without dead ends: 574 [2020-08-22 03:40:29,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-22 03:40:29,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-08-22 03:40:29,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 459. [2020-08-22 03:40:29,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-08-22 03:40:29,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 519 transitions. [2020-08-22 03:40:29,972 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 519 transitions. Word has length 109 [2020-08-22 03:40:29,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:40:29,972 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 519 transitions. [2020-08-22 03:40:29,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 03:40:29,973 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 519 transitions. [2020-08-22 03:40:29,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-22 03:40:29,974 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:40:29,975 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:40:29,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 03:40:29,975 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:40:29,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:40:29,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1998771717, now seen corresponding path program 1 times [2020-08-22 03:40:29,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:40:29,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557266624] [2020-08-22 03:40:29,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:40:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:30,227 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:40:30,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:40:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:30,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:40:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:30,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:40:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:30,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:40:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:30,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:40:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:30,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 03:40:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:30,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 03:40:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:30,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 03:40:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:30,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:40:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:30,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:40:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:30,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:40:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:30,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:40:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:30,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:40:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:30,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:40:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:30,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:40:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:30,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:40:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:30,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 03:40:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:30,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 03:40:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:30,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 03:40:30,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557266624] [2020-08-22 03:40:30,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:40:30,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 03:40:30,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055188768] [2020-08-22 03:40:30,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 03:40:30,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:40:30,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 03:40:30,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-22 03:40:30,418 INFO L87 Difference]: Start difference. First operand 459 states and 519 transitions. Second operand 8 states. [2020-08-22 03:40:30,853 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:40:31,405 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:40:34,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:40:34,046 INFO L93 Difference]: Finished difference Result 1365 states and 1751 transitions. [2020-08-22 03:40:34,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 03:40:34,046 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 109 [2020-08-22 03:40:34,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:40:34,053 INFO L225 Difference]: With dead ends: 1365 [2020-08-22 03:40:34,053 INFO L226 Difference]: Without dead ends: 934 [2020-08-22 03:40:34,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-22 03:40:34,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2020-08-22 03:40:34,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 789. [2020-08-22 03:40:34,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2020-08-22 03:40:34,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 921 transitions. [2020-08-22 03:40:34,185 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 921 transitions. Word has length 109 [2020-08-22 03:40:34,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:40:34,186 INFO L479 AbstractCegarLoop]: Abstraction has 789 states and 921 transitions. [2020-08-22 03:40:34,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 03:40:34,186 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 921 transitions. [2020-08-22 03:40:34,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-22 03:40:34,188 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:40:34,188 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:40:34,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 03:40:34,189 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:40:34,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:40:34,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1262789055, now seen corresponding path program 1 times [2020-08-22 03:40:34,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:40:34,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157481954] [2020-08-22 03:40:34,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:40:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:34,444 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:40:34,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:40:34,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:34,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:40:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:34,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:40:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:34,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:40:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:34,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:40:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:34,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 03:40:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:34,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 03:40:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:34,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 03:40:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:34,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 03:40:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:34,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:40:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:34,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:40:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:34,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:40:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:34,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:40:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:34,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:40:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:34,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:40:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:34,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:40:34,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:34,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:40:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:35,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-22 03:40:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:35,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 03:40:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:35,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 03:40:35,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157481954] [2020-08-22 03:40:35,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:40:35,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-22 03:40:35,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883798170] [2020-08-22 03:40:35,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-22 03:40:35,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:40:35,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-22 03:40:35,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-22 03:40:35,041 INFO L87 Difference]: Start difference. First operand 789 states and 921 transitions. Second operand 18 states. [2020-08-22 03:40:35,981 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:40:36,292 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 03:40:36,534 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 03:40:36,778 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 03:40:37,477 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:40:38,589 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 03:40:38,900 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 03:40:39,181 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 03:40:39,449 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 03:40:39,783 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 03:40:40,066 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 03:40:40,594 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-08-22 03:40:41,167 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-08-22 03:40:44,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:40:44,132 INFO L93 Difference]: Finished difference Result 1665 states and 2044 transitions. [2020-08-22 03:40:44,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-08-22 03:40:44,133 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 113 [2020-08-22 03:40:44,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:40:44,140 INFO L225 Difference]: With dead ends: 1665 [2020-08-22 03:40:44,140 INFO L226 Difference]: Without dead ends: 904 [2020-08-22 03:40:44,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=554, Invalid=2308, Unknown=0, NotChecked=0, Total=2862 [2020-08-22 03:40:44,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2020-08-22 03:40:44,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 768. [2020-08-22 03:40:44,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 768 states. [2020-08-22 03:40:44,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 886 transitions. [2020-08-22 03:40:44,279 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 886 transitions. Word has length 113 [2020-08-22 03:40:44,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:40:44,280 INFO L479 AbstractCegarLoop]: Abstraction has 768 states and 886 transitions. [2020-08-22 03:40:44,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-22 03:40:44,280 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 886 transitions. [2020-08-22 03:40:44,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-08-22 03:40:44,284 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:40:44,284 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:40:44,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 03:40:44,285 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:40:44,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:40:44,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1271659967, now seen corresponding path program 1 times [2020-08-22 03:40:44,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:40:44,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886575104] [2020-08-22 03:40:44,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:40:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:44,586 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:40:44,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:40:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:44,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:40:44,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:44,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:40:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:44,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:40:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:44,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:40:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:44,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 03:40:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:44,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 03:40:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:44,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 03:40:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:44,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:40:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:44,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:40:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:44,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:40:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:44,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:40:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:44,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:40:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:44,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:40:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:44,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:40:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:44,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:40:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:44,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:40:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:44,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 03:40:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:44,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:40:44,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:44,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-22 03:40:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:44,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-22 03:40:44,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:44,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 03:40:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:44,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:40:44,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:44,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:40:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:44,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 03:40:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:44,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:40:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:44,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:40:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:44,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 03:40:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:44,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:40:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:44,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-08-22 03:40:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:44,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-22 03:40:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:44,969 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-22 03:40:44,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886575104] [2020-08-22 03:40:44,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:40:44,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-22 03:40:44,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431013889] [2020-08-22 03:40:44,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 03:40:44,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:40:44,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 03:40:44,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-22 03:40:44,976 INFO L87 Difference]: Start difference. First operand 768 states and 886 transitions. Second operand 19 states. [2020-08-22 03:40:45,720 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:40:46,044 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 03:40:46,311 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 03:40:46,555 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 03:40:47,267 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:40:48,399 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:40:48,736 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:40:49,008 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:40:49,273 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:40:49,593 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:40:49,874 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:40:51,238 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:40:51,493 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:40:51,779 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:40:52,035 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:40:53,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:40:53,324 INFO L93 Difference]: Finished difference Result 1426 states and 1761 transitions. [2020-08-22 03:40:53,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-22 03:40:53,324 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 183 [2020-08-22 03:40:53,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:40:53,326 INFO L225 Difference]: With dead ends: 1426 [2020-08-22 03:40:53,326 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 03:40:53,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=591, Invalid=2715, Unknown=0, NotChecked=0, Total=3306 [2020-08-22 03:40:53,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 03:40:53,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 03:40:53,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 03:40:53,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 03:40:53,332 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 183 [2020-08-22 03:40:53,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:40:53,333 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 03:40:53,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 03:40:53,333 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 03:40:53,333 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 03:40:53,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 03:40:53,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 03:40:54,744 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 300 DAG size of output: 256 [2020-08-22 03:40:55,729 WARN L193 SmtUtils]: Spent 742.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 256 [2020-08-22 03:40:57,005 WARN L193 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 282