/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 03:26:47,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:26:47,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:26:47,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:26:47,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:26:47,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:26:47,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:26:47,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:26:47,310 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:26:47,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:26:47,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:26:47,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:26:47,315 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:26:47,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:26:47,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:26:47,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:26:47,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:26:47,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:26:47,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:26:47,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:26:47,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:26:47,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:26:47,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:26:47,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:26:47,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:26:47,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:26:47,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:26:47,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:26:47,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:26:47,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 03:26:47,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 03:26:47,359 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 03:26:47,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 03:26:47,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 03:26:47,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 03:26:47,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 03:26:47,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 03:26:47,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 03:26:47,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:26:47,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:26:47,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:26:47,364 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 [2020-08-19 03:26:47,385 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:26:47,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:26:47,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:26:47,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:26:47,387 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:26:47,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:26:47,387 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:26:47,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:26:47,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:26:47,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:26:47,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:26:47,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:26:47,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:26:47,389 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:26:47,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:26:47,389 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:26:47,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:26:47,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:26:47,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:26:47,390 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:26:47,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:26:47,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:26:47,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:26:47,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:26:47,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:26:47,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:26:47,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:26:47,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:26:47,392 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:26:47,392 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=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:26:47,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:26:47,720 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:26:47,724 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:26:47,725 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:26:47,726 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:26:47,726 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product40.cil.c [2020-08-19 03:26:47,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4be069ec/60f5be298ff74f51ac61909773168c88/FLAG1722e6311 [2020-08-19 03:26:48,321 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:26:48,323 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product40.cil.c [2020-08-19 03:26:48,343 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4be069ec/60f5be298ff74f51ac61909773168c88/FLAG1722e6311 [2020-08-19 03:26:48,586 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4be069ec/60f5be298ff74f51ac61909773168c88 [2020-08-19 03:26:48,597 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:26:48,599 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:26:48,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:26:48,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:26:48,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:26:48,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:26:48" (1/1) ... [2020-08-19 03:26:48,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5395a65d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:26:48, skipping insertion in model container [2020-08-19 03:26:48,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:26:48" (1/1) ... [2020-08-19 03:26:48,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:26:48,684 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:26:49,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:26:49,035 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:26:49,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:26:49,269 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:26:49,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:26:49 WrapperNode [2020-08-19 03:26:49,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:26:49,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:26:49,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:26:49,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:26:49,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:26:49" (1/1) ... [2020-08-19 03:26:49,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:26:49" (1/1) ... [2020-08-19 03:26:49,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:26:49" (1/1) ... [2020-08-19 03:26:49,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:26:49" (1/1) ... [2020-08-19 03:26:49,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:26:49" (1/1) ... [2020-08-19 03:26:49,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:26:49" (1/1) ... [2020-08-19 03:26:49,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:26:49" (1/1) ... [2020-08-19 03:26:49,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:26:49,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:26:49,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:26:49,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:26:49,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:26:49" (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 [2020-08-19 03:26:49,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:26:49,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:26:49,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 03:26:49,425 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 03:26:49,425 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 03:26:49,425 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 03:26:49,425 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 03:26:49,426 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 03:26:49,426 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 03:26:49,426 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 03:26:49,426 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 03:26:49,426 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 03:26:49,426 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 03:26:49,426 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 03:26:49,427 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 03:26:49,427 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 03:26:49,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 03:26:49,427 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 03:26:49,427 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 03:26:49,427 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 03:26:49,427 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 03:26:49,428 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:26:49,428 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 03:26:49,428 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 03:26:49,428 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 03:26:49,428 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 03:26:49,429 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 03:26:49,429 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 03:26:49,429 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 03:26:49,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 03:26:49,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 03:26:49,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 03:26:49,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 03:26:49,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 03:26:49,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 03:26:49,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-19 03:26:49,430 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 03:26:49,430 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 03:26:49,430 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 03:26:49,431 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 03:26:49,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:26:49,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 03:26:49,431 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 03:26:49,431 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 03:26:49,431 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 03:26:49,432 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 03:26:49,432 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 03:26:49,432 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 03:26:49,432 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 03:26:49,432 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 03:26:49,432 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 03:26:49,432 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 03:26:49,433 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 03:26:49,433 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 03:26:49,433 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 03:26:49,433 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 03:26:49,433 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 03:26:49,433 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 03:26:49,434 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-19 03:26:49,434 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 03:26:49,434 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 03:26:49,434 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 03:26:49,434 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 03:26:49,434 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 03:26:49,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 03:26:49,435 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 03:26:49,435 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 03:26:49,435 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 03:26:49,435 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 03:26:49,435 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 03:26:49,435 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 03:26:49,436 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 03:26:49,436 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:26:49,436 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 03:26:49,436 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 03:26:49,436 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 03:26:49,436 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 03:26:49,437 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 03:26:49,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 03:26:49,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 03:26:49,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 03:26:49,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 03:26:49,437 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 03:26:49,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 03:26:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 03:26:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 03:26:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 03:26:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 03:26:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 03:26:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 03:26:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 03:26:49,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:26:49,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 03:26:49,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:26:50,545 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:26:50,546 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 03:26:50,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:26:50 BoogieIcfgContainer [2020-08-19 03:26:50,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:26:50,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:26:50,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:26:50,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:26:50,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:26:48" (1/3) ... [2020-08-19 03:26:50,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6059f922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:26:50, skipping insertion in model container [2020-08-19 03:26:50,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:26:49" (2/3) ... [2020-08-19 03:26:50,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6059f922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:26:50, skipping insertion in model container [2020-08-19 03:26:50,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:26:50" (3/3) ... [2020-08-19 03:26:50,566 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product40.cil.c [2020-08-19 03:26:50,577 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:26:50,586 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:26:50,600 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:26:50,627 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:26:50,627 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:26:50,627 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:26:50,627 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:26:50,627 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:26:50,628 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:26:50,628 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:26:50,628 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:26:50,650 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2020-08-19 03:26:50,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 03:26:50,661 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:26:50,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:26:50,662 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:26:50,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:26:50,669 INFO L82 PathProgramCache]: Analyzing trace with hash -656044244, now seen corresponding path program 1 times [2020-08-19 03:26:50,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:26:50,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599583517] [2020-08-19 03:26:50,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:26:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:51,282 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:26:51,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:26:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:51,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:26:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:51,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:26:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:51,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:26:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:51,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:26:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:51,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 03:26:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:51,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 03:26:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:51,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:26:51,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599583517] [2020-08-19 03:26:51,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:26:51,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:26:51,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731441592] [2020-08-19 03:26:51,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:26:51,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:26:51,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:26:51,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:26:51,479 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 3 states. [2020-08-19 03:26:52,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:26:52,675 INFO L93 Difference]: Finished difference Result 316 states and 411 transitions. [2020-08-19 03:26:52,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:26:52,678 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 03:26:52,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:26:52,693 INFO L225 Difference]: With dead ends: 316 [2020-08-19 03:26:52,693 INFO L226 Difference]: Without dead ends: 171 [2020-08-19 03:26:52,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:26:52,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-08-19 03:26:52,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 136. [2020-08-19 03:26:52,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-08-19 03:26:52,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 159 transitions. [2020-08-19 03:26:52,821 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 159 transitions. Word has length 46 [2020-08-19 03:26:52,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:26:52,822 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 159 transitions. [2020-08-19 03:26:52,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:26:52,822 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 159 transitions. [2020-08-19 03:26:52,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 03:26:52,833 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:26:52,833 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:26:52,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:26:52,834 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:26:52,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:26:52,834 INFO L82 PathProgramCache]: Analyzing trace with hash 679222766, now seen corresponding path program 1 times [2020-08-19 03:26:52,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:26:52,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602785066] [2020-08-19 03:26:52,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:26:52,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:53,199 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:26:53,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:26:53,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:53,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:26:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:53,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:26:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:53,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:26:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:53,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:26:53,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:53,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 03:26:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:53,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:26:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:53,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:26:53,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602785066] [2020-08-19 03:26:53,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:26:53,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:26:53,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340693446] [2020-08-19 03:26:53,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:26:53,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:26:53,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:26:53,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:26:53,244 INFO L87 Difference]: Start difference. First operand 136 states and 159 transitions. Second operand 4 states. [2020-08-19 03:26:53,631 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:26:54,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:26:54,534 INFO L93 Difference]: Finished difference Result 239 states and 290 transitions. [2020-08-19 03:26:54,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:26:54,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 03:26:54,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:26:54,538 INFO L225 Difference]: With dead ends: 239 [2020-08-19 03:26:54,539 INFO L226 Difference]: Without dead ends: 155 [2020-08-19 03:26:54,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:26:54,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-19 03:26:54,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 127. [2020-08-19 03:26:54,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-19 03:26:54,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 147 transitions. [2020-08-19 03:26:54,620 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 147 transitions. Word has length 47 [2020-08-19 03:26:54,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:26:54,621 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 147 transitions. [2020-08-19 03:26:54,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:26:54,621 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 147 transitions. [2020-08-19 03:26:54,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 03:26:54,626 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:26:54,626 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] [2020-08-19 03:26:54,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:26:54,627 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:26:54,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:26:54,627 INFO L82 PathProgramCache]: Analyzing trace with hash 496169114, now seen corresponding path program 1 times [2020-08-19 03:26:54,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:26:54,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42342650] [2020-08-19 03:26:54,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:26:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:54,973 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:26:54,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:26:54,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:55,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:26:55,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:55,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:26:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:55,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:26:55,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:55,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:26:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:55,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 03:26:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:55,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 03:26:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:55,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:26:55,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42342650] [2020-08-19 03:26:55,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:26:55,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 03:26:55,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537810351] [2020-08-19 03:26:55,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 03:26:55,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:26:55,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 03:26:55,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:26:55,061 INFO L87 Difference]: Start difference. First operand 127 states and 147 transitions. Second operand 8 states. [2020-08-19 03:26:55,410 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:26:55,755 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:26:56,011 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:26:56,245 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:26:56,956 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:26:58,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:26:58,718 INFO L93 Difference]: Finished difference Result 436 states and 538 transitions. [2020-08-19 03:26:58,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 03:26:58,719 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-19 03:26:58,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:26:58,725 INFO L225 Difference]: With dead ends: 436 [2020-08-19 03:26:58,725 INFO L226 Difference]: Without dead ends: 333 [2020-08-19 03:26:58,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-19 03:26:58,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-08-19 03:26:58,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 268. [2020-08-19 03:26:58,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-19 03:26:58,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 322 transitions. [2020-08-19 03:26:58,828 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 322 transitions. Word has length 52 [2020-08-19 03:26:58,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:26:58,828 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 322 transitions. [2020-08-19 03:26:58,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 03:26:58,829 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 322 transitions. [2020-08-19 03:26:58,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 03:26:58,830 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:26:58,830 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] [2020-08-19 03:26:58,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:26:58,831 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:26:58,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:26:58,831 INFO L82 PathProgramCache]: Analyzing trace with hash 987448314, now seen corresponding path program 1 times [2020-08-19 03:26:58,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:26:58,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038826392] [2020-08-19 03:26:58,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:26:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:59,166 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:26:59,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:26:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:59,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:26:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:59,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:26:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:59,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:26:59,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:59,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:26:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:59,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 03:26:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:59,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 03:26:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:59,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 03:26:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:26:59,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:26:59,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038826392] [2020-08-19 03:26:59,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:26:59,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 03:26:59,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712027738] [2020-08-19 03:26:59,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 03:26:59,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:26:59,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 03:26:59,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:26:59,282 INFO L87 Difference]: Start difference. First operand 268 states and 322 transitions. Second operand 12 states. [2020-08-19 03:26:59,641 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:26:59,956 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:00,228 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:00,457 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:01,013 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:01,745 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:02,100 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:27:02,408 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:27:02,717 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:27:03,024 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:27:03,446 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:27:03,747 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:27:04,011 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:05,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:27:05,866 INFO L93 Difference]: Finished difference Result 1085 states and 1492 transitions. [2020-08-19 03:27:05,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 03:27:05,867 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-19 03:27:05,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:27:05,876 INFO L225 Difference]: With dead ends: 1085 [2020-08-19 03:27:05,877 INFO L226 Difference]: Without dead ends: 841 [2020-08-19 03:27:05,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-19 03:27:05,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2020-08-19 03:27:06,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 744. [2020-08-19 03:27:06,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2020-08-19 03:27:06,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 944 transitions. [2020-08-19 03:27:06,062 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 944 transitions. Word has length 57 [2020-08-19 03:27:06,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:27:06,062 INFO L479 AbstractCegarLoop]: Abstraction has 744 states and 944 transitions. [2020-08-19 03:27:06,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 03:27:06,063 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 944 transitions. [2020-08-19 03:27:06,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 03:27:06,066 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:27:06,066 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] [2020-08-19 03:27:06,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 03:27:06,066 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:27:06,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:27:06,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1158385600, now seen corresponding path program 1 times [2020-08-19 03:27:06,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:27:06,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115062917] [2020-08-19 03:27:06,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:27:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:06,319 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:27:06,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:27:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:06,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:27:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:06,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:27:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:06,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:06,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:27:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:06,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 03:27:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:06,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 03:27:06,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:06,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 03:27:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:06,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 03:27:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:06,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:27:06,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115062917] [2020-08-19 03:27:06,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:27:06,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 03:27:06,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107312326] [2020-08-19 03:27:06,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 03:27:06,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:27:06,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 03:27:06,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:27:06,394 INFO L87 Difference]: Start difference. First operand 744 states and 944 transitions. Second operand 6 states. [2020-08-19 03:27:06,648 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:27:08,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:27:08,171 INFO L93 Difference]: Finished difference Result 1799 states and 2451 transitions. [2020-08-19 03:27:08,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 03:27:08,171 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-19 03:27:08,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:27:08,182 INFO L225 Difference]: With dead ends: 1799 [2020-08-19 03:27:08,182 INFO L226 Difference]: Without dead ends: 1079 [2020-08-19 03:27:08,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-19 03:27:08,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2020-08-19 03:27:08,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 988. [2020-08-19 03:27:08,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2020-08-19 03:27:08,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1244 transitions. [2020-08-19 03:27:08,461 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1244 transitions. Word has length 61 [2020-08-19 03:27:08,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:27:08,461 INFO L479 AbstractCegarLoop]: Abstraction has 988 states and 1244 transitions. [2020-08-19 03:27:08,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 03:27:08,462 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1244 transitions. [2020-08-19 03:27:08,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-19 03:27:08,465 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:27:08,466 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 03:27:08,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 03:27:08,466 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:27:08,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:27:08,467 INFO L82 PathProgramCache]: Analyzing trace with hash -623744306, now seen corresponding path program 1 times [2020-08-19 03:27:08,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:27:08,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133741451] [2020-08-19 03:27:08,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:27:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:08,864 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:27:08,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:27:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:08,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:27:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:08,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:27:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:08,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:08,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:27:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:08,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:27:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:08,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:27:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:08,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 03:27:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:08,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:08,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:08,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 03:27:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:09,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 03:27:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:09,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 03:27:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:09,034 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 03:27:09,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133741451] [2020-08-19 03:27:09,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:27:09,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 03:27:09,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387850942] [2020-08-19 03:27:09,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 03:27:09,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:27:09,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 03:27:09,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:27:09,039 INFO L87 Difference]: Start difference. First operand 988 states and 1244 transitions. Second operand 10 states. [2020-08-19 03:27:09,686 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-19 03:27:10,320 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:27:12,213 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:27:14,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:27:14,197 INFO L93 Difference]: Finished difference Result 1921 states and 2525 transitions. [2020-08-19 03:27:14,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 03:27:14,197 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-19 03:27:14,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:27:14,208 INFO L225 Difference]: With dead ends: 1921 [2020-08-19 03:27:14,208 INFO L226 Difference]: Without dead ends: 1208 [2020-08-19 03:27:14,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-19 03:27:14,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2020-08-19 03:27:14,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 1095. [2020-08-19 03:27:14,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1095 states. [2020-08-19 03:27:14,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1355 transitions. [2020-08-19 03:27:14,451 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1355 transitions. Word has length 89 [2020-08-19 03:27:14,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:27:14,451 INFO L479 AbstractCegarLoop]: Abstraction has 1095 states and 1355 transitions. [2020-08-19 03:27:14,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 03:27:14,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1355 transitions. [2020-08-19 03:27:14,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-19 03:27:14,456 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:27:14,456 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 03:27:14,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 03:27:14,457 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:27:14,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:27:14,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1382968030, now seen corresponding path program 1 times [2020-08-19 03:27:14,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:27:14,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574874471] [2020-08-19 03:27:14,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:27:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:14,723 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:27:14,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:27:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:14,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:27:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:14,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:27:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:14,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:14,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:27:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:14,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 03:27:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:14,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:14,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:14,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:14,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:14,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:27:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:14,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 03:27:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:14,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:14,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 03:27:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:14,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 03:27:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:14,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-19 03:27:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:14,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:14,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:14,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:14,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 03:27:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:14,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-19 03:27:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:14,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-19 03:27:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:14,908 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 03:27:14,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574874471] [2020-08-19 03:27:14,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:27:14,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 03:27:14,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631380673] [2020-08-19 03:27:14,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 03:27:14,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:27:14,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 03:27:14,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:27:14,911 INFO L87 Difference]: Start difference. First operand 1095 states and 1355 transitions. Second operand 12 states. [2020-08-19 03:27:15,894 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:16,144 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:16,379 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:17,113 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:17,367 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:17,613 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:18,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:27:18,843 INFO L93 Difference]: Finished difference Result 2280 states and 2962 transitions. [2020-08-19 03:27:18,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 03:27:18,845 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 132 [2020-08-19 03:27:18,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:27:18,854 INFO L225 Difference]: With dead ends: 2280 [2020-08-19 03:27:18,854 INFO L226 Difference]: Without dead ends: 1209 [2020-08-19 03:27:18,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 03:27:18,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2020-08-19 03:27:19,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1095. [2020-08-19 03:27:19,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1095 states. [2020-08-19 03:27:19,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1351 transitions. [2020-08-19 03:27:19,086 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1351 transitions. Word has length 132 [2020-08-19 03:27:19,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:27:19,087 INFO L479 AbstractCegarLoop]: Abstraction has 1095 states and 1351 transitions. [2020-08-19 03:27:19,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 03:27:19,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1351 transitions. [2020-08-19 03:27:19,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-19 03:27:19,092 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:27:19,092 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 03:27:19,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 03:27:19,093 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:27:19,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:27:19,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1689143082, now seen corresponding path program 1 times [2020-08-19 03:27:19,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:27:19,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853476207] [2020-08-19 03:27:19,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:27:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:19,385 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:27:19,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:27:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:19,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:27:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:19,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:27:19,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:19,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:19,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:27:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:19,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 03:27:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:19,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:19,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:19,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:19,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:19,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:19,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:27:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:19,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 03:27:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:19,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:19,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 03:27:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:19,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-19 03:27:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:19,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:19,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:19,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 03:27:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:19,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 03:27:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:19,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-19 03:27:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:19,599 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 03:27:19,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853476207] [2020-08-19 03:27:19,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:27:19,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 03:27:19,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78347009] [2020-08-19 03:27:19,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 03:27:19,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:27:19,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 03:27:19,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:27:19,602 INFO L87 Difference]: Start difference. First operand 1095 states and 1351 transitions. Second operand 10 states. [2020-08-19 03:27:20,976 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:21,217 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:27:21,479 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:21,716 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:22,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:27:22,551 INFO L93 Difference]: Finished difference Result 2085 states and 2647 transitions. [2020-08-19 03:27:22,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 03:27:22,552 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 128 [2020-08-19 03:27:22,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:27:22,558 INFO L225 Difference]: With dead ends: 2085 [2020-08-19 03:27:22,558 INFO L226 Difference]: Without dead ends: 1014 [2020-08-19 03:27:22,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 03:27:22,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2020-08-19 03:27:22,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 956. [2020-08-19 03:27:22,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 956 states. [2020-08-19 03:27:22,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1156 transitions. [2020-08-19 03:27:22,790 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1156 transitions. Word has length 128 [2020-08-19 03:27:22,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:27:22,791 INFO L479 AbstractCegarLoop]: Abstraction has 956 states and 1156 transitions. [2020-08-19 03:27:22,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 03:27:22,791 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1156 transitions. [2020-08-19 03:27:22,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-19 03:27:22,794 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:27:22,794 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 03:27:22,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 03:27:22,795 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:27:22,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:27:22,795 INFO L82 PathProgramCache]: Analyzing trace with hash -855657151, now seen corresponding path program 1 times [2020-08-19 03:27:22,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:27:22,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782787300] [2020-08-19 03:27:22,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:27:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:23,075 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:27:23,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:27:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:23,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:27:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:23,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:27:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:23,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:23,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:27:23,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:23,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:27:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:23,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:27:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:23,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:23,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:23,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:23,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:23,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:23,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:27:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:23,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 03:27:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:23,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:23,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 03:27:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:23,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-19 03:27:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:23,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:23,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:23,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 03:27:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:23,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-19 03:27:23,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:23,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-19 03:27:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:23,364 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-19 03:27:23,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782787300] [2020-08-19 03:27:23,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:27:23,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 03:27:23,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197827984] [2020-08-19 03:27:23,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 03:27:23,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:27:23,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 03:27:23,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-19 03:27:23,367 INFO L87 Difference]: Start difference. First operand 956 states and 1156 transitions. Second operand 13 states. [2020-08-19 03:27:24,013 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:27:24,697 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:26,812 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:27,092 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:27,330 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:27,581 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:27:27,835 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:28,076 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:27:28,298 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:28,546 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:27:28,811 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:27:29,041 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:27:29,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:27:29,809 INFO L93 Difference]: Finished difference Result 2764 states and 3470 transitions. [2020-08-19 03:27:29,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 03:27:29,810 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 132 [2020-08-19 03:27:29,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:27:29,822 INFO L225 Difference]: With dead ends: 2764 [2020-08-19 03:27:29,822 INFO L226 Difference]: Without dead ends: 1832 [2020-08-19 03:27:29,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2020-08-19 03:27:29,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1832 states. [2020-08-19 03:27:30,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1832 to 1727. [2020-08-19 03:27:30,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1727 states. [2020-08-19 03:27:30,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2059 transitions. [2020-08-19 03:27:30,228 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2059 transitions. Word has length 132 [2020-08-19 03:27:30,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:27:30,230 INFO L479 AbstractCegarLoop]: Abstraction has 1727 states and 2059 transitions. [2020-08-19 03:27:30,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 03:27:30,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2059 transitions. [2020-08-19 03:27:30,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-19 03:27:30,235 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:27:30,236 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 03:27:30,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 03:27:30,236 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:27:30,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:27:30,237 INFO L82 PathProgramCache]: Analyzing trace with hash -242335011, now seen corresponding path program 1 times [2020-08-19 03:27:30,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:27:30,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035870795] [2020-08-19 03:27:30,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:27:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,526 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:27:30,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:27:30,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:27:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:27:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:27:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:27:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 03:27:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 03:27:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:30,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:30,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:27:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 03:27:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-19 03:27:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 03:27:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 03:27:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-19 03:27:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-19 03:27:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:30,682 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-19 03:27:30,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035870795] [2020-08-19 03:27:30,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:27:30,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 03:27:30,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962340637] [2020-08-19 03:27:30,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 03:27:30,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:27:30,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 03:27:30,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-19 03:27:30,685 INFO L87 Difference]: Start difference. First operand 1727 states and 2059 transitions. Second operand 11 states. [2020-08-19 03:27:31,225 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:27:33,346 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:33,579 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:27:33,834 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:34,112 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:34,355 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:34,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:27:34,827 INFO L93 Difference]: Finished difference Result 2058 states and 2631 transitions. [2020-08-19 03:27:34,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 03:27:34,828 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 136 [2020-08-19 03:27:34,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:27:34,841 INFO L225 Difference]: With dead ends: 2058 [2020-08-19 03:27:34,842 INFO L226 Difference]: Without dead ends: 2055 [2020-08-19 03:27:34,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2020-08-19 03:27:34,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2055 states. [2020-08-19 03:27:35,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2055 to 1727. [2020-08-19 03:27:35,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1727 states. [2020-08-19 03:27:35,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2049 transitions. [2020-08-19 03:27:35,205 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2049 transitions. Word has length 136 [2020-08-19 03:27:35,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:27:35,206 INFO L479 AbstractCegarLoop]: Abstraction has 1727 states and 2049 transitions. [2020-08-19 03:27:35,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 03:27:35,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2049 transitions. [2020-08-19 03:27:35,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-19 03:27:35,211 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:27:35,212 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 03:27:35,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 03:27:35,212 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:27:35,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:27:35,213 INFO L82 PathProgramCache]: Analyzing trace with hash 2128978130, now seen corresponding path program 1 times [2020-08-19 03:27:35,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:27:35,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162637927] [2020-08-19 03:27:35,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:27:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:35,487 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:27:35,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:27:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:35,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:27:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:35,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:27:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:35,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:35,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:27:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:35,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:27:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:35,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:27:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:35,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:35,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:35,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:35,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:35,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:35,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:27:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:35,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 03:27:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:35,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:35,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 03:27:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:35,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-19 03:27:35,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:35,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:35,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:35,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 03:27:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:35,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:35,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-19 03:27:35,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:35,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-19 03:27:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:35,791 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-19 03:27:35,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162637927] [2020-08-19 03:27:35,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:27:35,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 03:27:35,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862340832] [2020-08-19 03:27:35,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 03:27:35,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:27:35,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 03:27:35,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:27:35,793 INFO L87 Difference]: Start difference. First operand 1727 states and 2049 transitions. Second operand 12 states. [2020-08-19 03:27:36,212 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:27:36,805 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:27:37,346 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:37,640 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:37,897 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:38,179 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:38,498 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:27:38,750 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:27:40,519 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:27:41,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:27:41,341 INFO L93 Difference]: Finished difference Result 4160 states and 5347 transitions. [2020-08-19 03:27:41,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-19 03:27:41,342 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 136 [2020-08-19 03:27:41,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:27:41,360 INFO L225 Difference]: With dead ends: 4160 [2020-08-19 03:27:41,360 INFO L226 Difference]: Without dead ends: 2775 [2020-08-19 03:27:41,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-19 03:27:41,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2775 states. [2020-08-19 03:27:41,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2775 to 2303. [2020-08-19 03:27:41,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2303 states. [2020-08-19 03:27:41,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 2786 transitions. [2020-08-19 03:27:41,795 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 2786 transitions. Word has length 136 [2020-08-19 03:27:41,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:27:41,798 INFO L479 AbstractCegarLoop]: Abstraction has 2303 states and 2786 transitions. [2020-08-19 03:27:41,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 03:27:41,798 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 2786 transitions. [2020-08-19 03:27:41,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-08-19 03:27:41,806 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:27:41,807 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:27:41,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 03:27:41,807 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:27:41,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:27:41,808 INFO L82 PathProgramCache]: Analyzing trace with hash 2052523815, now seen corresponding path program 2 times [2020-08-19 03:27:41,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:27:41,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958830610] [2020-08-19 03:27:41,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:27:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 03:27:41,901 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 03:27:41,901 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 03:27:41,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 03:27:41,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 03:27:41 BoogieIcfgContainer [2020-08-19 03:27:41,957 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 03:27:41,959 INFO L168 Benchmark]: Toolchain (without parser) took 53359.99 ms. Allocated memory was 140.5 MB in the beginning and 787.5 MB in the end (delta: 647.0 MB). Free memory was 102.3 MB in the beginning and 226.1 MB in the end (delta: -123.7 MB). Peak memory consumption was 523.2 MB. Max. memory is 7.1 GB. [2020-08-19 03:27:41,962 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 03:27:41,964 INFO L168 Benchmark]: CACSL2BoogieTranslator took 667.96 ms. Allocated memory was 140.5 MB in the beginning and 205.0 MB in the end (delta: 64.5 MB). Free memory was 102.1 MB in the beginning and 173.1 MB in the end (delta: -71.0 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2020-08-19 03:27:41,964 INFO L168 Benchmark]: Boogie Preprocessor took 96.84 ms. Allocated memory is still 205.0 MB. Free memory was 173.1 MB in the beginning and 168.3 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-08-19 03:27:41,967 INFO L168 Benchmark]: RCFGBuilder took 1187.28 ms. Allocated memory was 205.0 MB in the beginning and 234.9 MB in the end (delta: 29.9 MB). Free memory was 168.3 MB in the beginning and 194.6 MB in the end (delta: -26.2 MB). Peak memory consumption was 81.4 MB. Max. memory is 7.1 GB. [2020-08-19 03:27:41,971 INFO L168 Benchmark]: TraceAbstraction took 51398.86 ms. Allocated memory was 234.9 MB in the beginning and 787.5 MB in the end (delta: 552.6 MB). Free memory was 194.6 MB in the beginning and 226.1 MB in the end (delta: -31.5 MB). Peak memory consumption was 521.1 MB. Max. memory is 7.1 GB. [2020-08-19 03:27:41,974 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 667.96 ms. Allocated memory was 140.5 MB in the beginning and 205.0 MB in the end (delta: 64.5 MB). Free memory was 102.1 MB in the beginning and 173.1 MB in the end (delta: -71.0 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 96.84 ms. Allocated memory is still 205.0 MB. Free memory was 173.1 MB in the beginning and 168.3 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1187.28 ms. Allocated memory was 205.0 MB in the beginning and 234.9 MB in the end (delta: 29.9 MB). Free memory was 168.3 MB in the beginning and 194.6 MB in the end (delta: -26.2 MB). Peak memory consumption was 81.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 51398.86 ms. Allocated memory was 234.9 MB in the beginning and 787.5 MB in the end (delta: 552.6 MB). Free memory was 194.6 MB in the beginning and 226.1 MB in the end (delta: -31.5 MB). Peak memory consumption was 521.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 329]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L123] int pumpRunning = 0; [L124] int systemActive = 1; [L334] int cleanupTimeShifts = 4; [L434] int waterLevel = 1; [L435] int methaneLevelCritical = 0; [L697] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L410] int retValue_acc ; [L411] int tmp ; [L415] FCALL select_helpers() [L416] FCALL select_features() [L417] CALL, EXPR valid_product() [L946] int retValue_acc ; [L949] retValue_acc = 1 [L950] return (retValue_acc); [L417] RET, EXPR valid_product() [L417] tmp = valid_product() [L419] COND TRUE \read(tmp) [L421] FCALL setup() [L422] CALL runTest() [L401] CALL test() [L47] int splverifierCounter ; [L48] int tmp ; [L49] int tmp___0 ; [L50] int tmp___1 ; [L51] int tmp___2 ; [L54] splverifierCounter = 0 [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND TRUE \read(tmp) [L68] CALL waterRise() [L452] COND TRUE waterLevel < 2 [L453] waterLevel = waterLevel + 1 [L68] RET waterRise() [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___1)) [L103] CALL timeShift() [L131] COND FALSE !(\read(pumpRunning)) [L138] COND TRUE \read(systemActive) [L140] CALL processEnvironment() [L186] int tmp ; [L189] COND FALSE !(\read(pumpRunning)) [L204] CALL processEnvironment__wrappee__highWaterSensor() [L160] int tmp ; [L163] COND TRUE ! pumpRunning [L165] CALL, EXPR isHighWaterLevel() [L283] int retValue_acc ; [L284] int tmp ; [L285] int tmp___0 ; [L289] CALL, EXPR isHighWaterSensorDry() [L514] int retValue_acc ; [L517] COND FALSE !(waterLevel < 2) [L521] retValue_acc = 0 [L522] return (retValue_acc); [L289] RET, EXPR isHighWaterSensorDry() [L289] tmp = isHighWaterSensorDry() [L291] COND FALSE !(\read(tmp)) [L294] tmp___0 = 1 [L296] retValue_acc = tmp___0 [L297] return (retValue_acc); [L165] RET, EXPR isHighWaterLevel() [L165] tmp = isHighWaterLevel() [L167] COND TRUE \read(tmp) [L169] CALL activatePump() [L214] pumpRunning = 1 [L169] RET activatePump() [L204] RET processEnvironment__wrappee__highWaterSensor() [L140] RET processEnvironment() [L146] CALL __utac_acc__Specification4_spec__1() [L895] int tmp ; [L896] int tmp___0 ; [L900] CALL, EXPR getWaterLevel() [L505] int retValue_acc ; [L508] retValue_acc = waterLevel [L509] return (retValue_acc); [L900] RET, EXPR getWaterLevel() [L900] tmp = getWaterLevel() [L902] COND FALSE !(tmp == 0) [L146] RET __utac_acc__Specification4_spec__1() [L103] RET timeShift() [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___1)) [L103] CALL timeShift() [L131] COND TRUE \read(pumpRunning) [L133] CALL lowerWaterLevel() [L440] COND TRUE waterLevel > 0 [L441] waterLevel = waterLevel - 1 [L133] RET lowerWaterLevel() [L138] COND TRUE \read(systemActive) [L140] CALL processEnvironment() [L186] int tmp ; [L189] COND TRUE \read(pumpRunning) [L191] CALL, EXPR isMethaneAlarm() [L227] int retValue_acc ; [L231] CALL, EXPR isMethaneLevelCritical() [L473] int retValue_acc ; [L476] retValue_acc = methaneLevelCritical [L477] return (retValue_acc); [L231] RET, EXPR isMethaneLevelCritical() [L231] retValue_acc = isMethaneLevelCritical() [L233] return (retValue_acc); [L191] RET, EXPR isMethaneAlarm() [L191] tmp = isMethaneAlarm() [L193] COND FALSE !(\read(tmp)) [L199] CALL processEnvironment__wrappee__highWaterSensor() [L160] int tmp ; [L163] COND FALSE !(! pumpRunning) [L178] FCALL processEnvironment__wrappee__base() [L199] RET processEnvironment__wrappee__highWaterSensor() [L140] RET processEnvironment() [L146] CALL __utac_acc__Specification4_spec__1() [L895] int tmp ; [L896] int tmp___0 ; [L900] CALL, EXPR getWaterLevel() [L505] int retValue_acc ; [L508] retValue_acc = waterLevel [L509] return (retValue_acc); [L900] RET, EXPR getWaterLevel() [L900] tmp = getWaterLevel() [L902] COND FALSE !(tmp == 0) [L146] RET __utac_acc__Specification4_spec__1() [L103] RET timeShift() [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___1)) [L103] CALL timeShift() [L131] COND TRUE \read(pumpRunning) [L133] CALL lowerWaterLevel() [L440] COND TRUE waterLevel > 0 [L441] waterLevel = waterLevel - 1 [L133] RET lowerWaterLevel() [L138] COND TRUE \read(systemActive) [L140] CALL processEnvironment() [L186] int tmp ; [L189] COND TRUE \read(pumpRunning) [L191] CALL, EXPR isMethaneAlarm() [L227] int retValue_acc ; [L231] CALL, EXPR isMethaneLevelCritical() [L473] int retValue_acc ; [L476] retValue_acc = methaneLevelCritical [L477] return (retValue_acc); [L231] RET, EXPR isMethaneLevelCritical() [L231] retValue_acc = isMethaneLevelCritical() [L233] return (retValue_acc); [L191] RET, EXPR isMethaneAlarm() [L191] tmp = isMethaneAlarm() [L193] COND FALSE !(\read(tmp)) [L199] CALL processEnvironment__wrappee__highWaterSensor() [L160] int tmp ; [L163] COND FALSE !(! pumpRunning) [L178] FCALL processEnvironment__wrappee__base() [L199] RET processEnvironment__wrappee__highWaterSensor() [L140] RET processEnvironment() [L146] CALL __utac_acc__Specification4_spec__1() [L895] int tmp ; [L896] int tmp___0 ; [L900] CALL, EXPR getWaterLevel() [L505] int retValue_acc ; [L508] retValue_acc = waterLevel [L509] return (retValue_acc); [L900] RET, EXPR getWaterLevel() [L900] tmp = getWaterLevel() [L902] COND TRUE tmp == 0 [L904] CALL, EXPR isPumpRunning() [L238] int retValue_acc ; [L241] retValue_acc = pumpRunning [L242] return (retValue_acc); [L904] RET, EXPR isPumpRunning() [L904] tmp___0 = isPumpRunning() [L906] COND TRUE \read(tmp___0) [L908] CALL __automaton_fail() [L329] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 235 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 51.2s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 42.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1502 SDtfs, 4060 SDslu, 1838 SDs, 0 SdLazy, 10933 SolverSat, 2958 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 547 GetRequests, 356 SyntacticMatches, 7 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 17.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2303occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 1506 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 1204 NumberOfCodeBlocks, 1204 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1005 ConstructedInterpolants, 0 QuantifiedInterpolants, 359743 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 134/153 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...