/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_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 03:27:09,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:27:09,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:27:09,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:27:09,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:27:09,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:27:09,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:27:09,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:27:09,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:27:09,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:27:09,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:27:09,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:27:09,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:27:09,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:27:09,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:27:09,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:27:09,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:27:09,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:27:09,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:27:09,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:27:09,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:27:09,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:27:09,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:27:09,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:27:09,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:27:09,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:27:09,259 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:27:09,260 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:27:09,260 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:27:09,261 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 03:27:09,261 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 03:27:09,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 03:27:09,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 03:27:09,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 03:27:09,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 03:27:09,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 03:27:09,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 03:27:09,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 03:27:09,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:27:09,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:27:09,268 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:27:09,268 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 03:27:09,301 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:27:09,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:27:09,303 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:27:09,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:27:09,304 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:27:09,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:27:09,305 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:27:09,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:27:09,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:27:09,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:27:09,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:27:09,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:27:09,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:27:09,307 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:27:09,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:27:09,307 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:27:09,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:27:09,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:27:09,308 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:27:09,308 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:27:09,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:27:09,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:27:09,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:27:09,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:27:09,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:27:09,310 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:27:09,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:27:09,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:27:09,310 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:27:09,310 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 03:27:09,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:27:09,621 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:27:09,624 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:27:09,626 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:27:09,626 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:27:09,627 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product46.cil.c [2020-08-19 03:27:09,701 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1298f9da5/b3fa22898a7346d9aaf227ae0cb59079/FLAG9608ee16d [2020-08-19 03:27:10,273 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:27:10,274 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product46.cil.c [2020-08-19 03:27:10,290 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1298f9da5/b3fa22898a7346d9aaf227ae0cb59079/FLAG9608ee16d [2020-08-19 03:27:10,568 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1298f9da5/b3fa22898a7346d9aaf227ae0cb59079 [2020-08-19 03:27:10,577 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:27:10,578 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:27:10,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:27:10,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:27:10,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:27:10,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:27:10" (1/1) ... [2020-08-19 03:27:10,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c53af82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:27:10, skipping insertion in model container [2020-08-19 03:27:10,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:27:10" (1/1) ... [2020-08-19 03:27:10,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:27:10,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:27:11,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:27:11,089 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:27:11,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:27:11,259 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:27:11,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:27:11 WrapperNode [2020-08-19 03:27:11,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:27:11,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:27:11,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:27:11,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:27:11,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:27:11" (1/1) ... [2020-08-19 03:27:11,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:27:11" (1/1) ... [2020-08-19 03:27:11,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:27:11" (1/1) ... [2020-08-19 03:27:11,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:27:11" (1/1) ... [2020-08-19 03:27:11,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:27:11" (1/1) ... [2020-08-19 03:27:11,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:27:11" (1/1) ... [2020-08-19 03:27:11,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:27:11" (1/1) ... [2020-08-19 03:27:11,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:27:11,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:27:11,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:27:11,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:27:11,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:27:11" (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 03:27:11,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:27:11,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:27:11,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 03:27:11,426 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 03:27:11,426 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 03:27:11,426 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 03:27:11,427 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 03:27:11,427 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:27:11,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-19 03:27:11,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 03:27:11,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 03:27:11,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 03:27:11,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 03:27:11,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 03:27:11,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 03:27:11,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 03:27:11,430 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 03:27:11,430 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 03:27:11,430 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 03:27:11,430 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 03:27:11,431 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-19 03:27:11,431 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 03:27:11,431 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 03:27:11,431 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 03:27:11,431 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 03:27:11,432 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 03:27:11,433 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 03:27:11,433 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 03:27:11,433 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 03:27:11,433 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 03:27:11,433 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 03:27:11,434 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 03:27:11,434 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 03:27:11,434 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 03:27:11,434 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 03:27:11,434 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 03:27:11,434 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 03:27:11,434 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 03:27:11,435 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 03:27:11,435 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 03:27:11,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:27:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 03:27:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 03:27:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 03:27:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 03:27:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 03:27:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 03:27:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 03:27:11,437 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 03:27:11,437 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 03:27:11,437 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 03:27:11,437 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 03:27:11,437 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 03:27:11,437 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 03:27:11,438 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 03:27:11,438 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:27:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 03:27:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 03:27:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 03:27:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-19 03:27:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 03:27:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 03:27:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 03:27:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 03:27:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 03:27:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 03:27:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 03:27:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 03:27:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 03:27:11,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 03:27:11,441 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 03:27:11,442 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 03:27:11,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 03:27:11,443 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 03:27:11,443 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 03:27:11,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 03:27:11,444 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 03:27:11,444 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 03:27:11,444 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 03:27:11,445 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 03:27:11,445 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 03:27:11,445 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 03:27:11,446 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 03:27:11,446 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 03:27:11,446 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 03:27:11,446 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 03:27:11,447 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 03:27:11,447 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 03:27:11,447 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 03:27:11,447 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-19 03:27:11,447 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 03:27:11,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:27:11,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 03:27:11,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:27:12,637 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:27:12,637 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 03:27:12,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:27:12 BoogieIcfgContainer [2020-08-19 03:27:12,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:27:12,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:27:12,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:27:12,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:27:12,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:27:10" (1/3) ... [2020-08-19 03:27:12,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55aea079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:27:12, skipping insertion in model container [2020-08-19 03:27:12,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:27:11" (2/3) ... [2020-08-19 03:27:12,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55aea079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:27:12, skipping insertion in model container [2020-08-19 03:27:12,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:27:12" (3/3) ... [2020-08-19 03:27:12,651 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product46.cil.c [2020-08-19 03:27:12,661 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:27:12,669 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:27:12,683 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:27:12,708 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:27:12,708 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:27:12,708 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:27:12,709 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:27:12,709 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:27:12,709 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:27:12,709 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:27:12,710 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:27:12,731 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states. [2020-08-19 03:27:12,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 03:27:12,741 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:27:12,742 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 03:27:12,742 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:27:12,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:27:12,748 INFO L82 PathProgramCache]: Analyzing trace with hash 580316159, now seen corresponding path program 1 times [2020-08-19 03:27:12,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:27:12,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249362373] [2020-08-19 03:27:12,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:27:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:13,402 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:27:13,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:27:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:13,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:27:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:13,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:27:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:13,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:13,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:27:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:13,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 03:27:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:13,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 03:27:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:13,539 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 03:27:13,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249362373] [2020-08-19 03:27:13,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:27:13,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:27:13,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087818486] [2020-08-19 03:27:13,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:27:13,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:27:13,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:27:13,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:27:13,567 INFO L87 Difference]: Start difference. First operand 180 states. Second operand 3 states. [2020-08-19 03:27:14,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:27:14,842 INFO L93 Difference]: Finished difference Result 318 states and 412 transitions. [2020-08-19 03:27:14,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:27:14,844 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 03:27:14,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:27:14,860 INFO L225 Difference]: With dead ends: 318 [2020-08-19 03:27:14,861 INFO L226 Difference]: Without dead ends: 172 [2020-08-19 03:27:14,866 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 03:27:14,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-19 03:27:14,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 137. [2020-08-19 03:27:14,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-08-19 03:27:14,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 160 transitions. [2020-08-19 03:27:15,000 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 160 transitions. Word has length 46 [2020-08-19 03:27:15,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:27:15,001 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 160 transitions. [2020-08-19 03:27:15,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:27:15,002 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 160 transitions. [2020-08-19 03:27:15,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 03:27:15,008 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:27:15,008 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 03:27:15,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:27:15,009 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:27:15,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:27:15,009 INFO L82 PathProgramCache]: Analyzing trace with hash -2039927443, now seen corresponding path program 1 times [2020-08-19 03:27:15,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:27:15,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977179069] [2020-08-19 03:27:15,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:27:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:15,391 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:27:15,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:27:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:15,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:27:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:15,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:27:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:15,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:15,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:27:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:15,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 03:27:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:15,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:27:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:15,430 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 03:27:15,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977179069] [2020-08-19 03:27:15,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:27:15,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:27:15,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159308103] [2020-08-19 03:27:15,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:27:15,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:27:15,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:27:15,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:27:15,434 INFO L87 Difference]: Start difference. First operand 137 states and 160 transitions. Second operand 4 states. [2020-08-19 03:27:15,841 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:16,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:27:16,760 INFO L93 Difference]: Finished difference Result 247 states and 299 transitions. [2020-08-19 03:27:16,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:27:16,761 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 03:27:16,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:27:16,764 INFO L225 Difference]: With dead ends: 247 [2020-08-19 03:27:16,765 INFO L226 Difference]: Without dead ends: 156 [2020-08-19 03:27:16,766 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 03:27:16,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-19 03:27:16,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 128. [2020-08-19 03:27:16,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-19 03:27:16,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2020-08-19 03:27:16,806 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 47 [2020-08-19 03:27:16,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:27:16,806 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2020-08-19 03:27:16,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:27:16,807 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2020-08-19 03:27:16,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 03:27:16,809 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:27:16,809 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 03:27:16,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:27:16,810 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:27:16,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:27:16,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1891987703, now seen corresponding path program 1 times [2020-08-19 03:27:16,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:27:16,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412491514] [2020-08-19 03:27:16,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:27:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:17,138 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:27:17,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:27:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:17,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:27:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:17,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:27:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:17,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:17,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:27:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:17,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 03:27:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:17,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 03:27:17,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:17,245 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 03:27:17,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412491514] [2020-08-19 03:27:17,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:27:17,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 03:27:17,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049455380] [2020-08-19 03:27:17,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 03:27:17,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:27:17,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 03:27:17,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:27:17,252 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand 8 states. [2020-08-19 03:27:17,666 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:27:17,958 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:18,240 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:18,478 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:19,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:27:19,765 INFO L93 Difference]: Finished difference Result 260 states and 317 transitions. [2020-08-19 03:27:19,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 03:27:19,765 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-19 03:27:19,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:27:19,769 INFO L225 Difference]: With dead ends: 260 [2020-08-19 03:27:19,770 INFO L226 Difference]: Without dead ends: 156 [2020-08-19 03:27:19,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:27:19,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-19 03:27:19,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 128. [2020-08-19 03:27:19,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-19 03:27:19,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 147 transitions. [2020-08-19 03:27:19,811 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 147 transitions. Word has length 52 [2020-08-19 03:27:19,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:27:19,812 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 147 transitions. [2020-08-19 03:27:19,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 03:27:19,812 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 147 transitions. [2020-08-19 03:27:19,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-19 03:27:19,815 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:27:19,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:27:19,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:27:19,816 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:27:19,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:27:19,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1745786735, now seen corresponding path program 1 times [2020-08-19 03:27:19,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:27:19,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373008644] [2020-08-19 03:27:19,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:27:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:20,087 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:27:20,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:27:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:20,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:27:20,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:20,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:27:20,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:20,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:20,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:20,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:27:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:20,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 03:27:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:20,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:20,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:20,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 03:27:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:20,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-19 03:27:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:20,163 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 03:27:20,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373008644] [2020-08-19 03:27:20,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:27:20,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 03:27:20,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862474752] [2020-08-19 03:27:20,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 03:27:20,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:27:20,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 03:27:20,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:27:20,166 INFO L87 Difference]: Start difference. First operand 128 states and 147 transitions. Second operand 6 states. [2020-08-19 03:27:20,527 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:27:21,822 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:22,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:27:22,501 INFO L93 Difference]: Finished difference Result 365 states and 446 transitions. [2020-08-19 03:27:22,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 03:27:22,503 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-19 03:27:22,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:27:22,507 INFO L225 Difference]: With dead ends: 365 [2020-08-19 03:27:22,507 INFO L226 Difference]: Without dead ends: 261 [2020-08-19 03:27:22,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-19 03:27:22,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-08-19 03:27:22,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 218. [2020-08-19 03:27:22,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-19 03:27:22,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 245 transitions. [2020-08-19 03:27:22,557 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 245 transitions. Word has length 65 [2020-08-19 03:27:22,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:27:22,557 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 245 transitions. [2020-08-19 03:27:22,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 03:27:22,558 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 245 transitions. [2020-08-19 03:27:22,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-19 03:27:22,560 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:27:22,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:27:22,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 03:27:22,561 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:27:22,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:27:22,562 INFO L82 PathProgramCache]: Analyzing trace with hash 189412453, now seen corresponding path program 1 times [2020-08-19 03:27:22,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:27:22,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68655229] [2020-08-19 03:27:22,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:27:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:22,852 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:27:22,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:27:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:22,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:27:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:22,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:27:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:22,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:22,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:27:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:22,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 03:27:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:22,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:22,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:22,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:23,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:27:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:23,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 03:27:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:23,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 03:27:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:23,028 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 03:27:23,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68655229] [2020-08-19 03:27:23,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:27:23,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 03:27:23,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423547473] [2020-08-19 03:27:23,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 03:27:23,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:27:23,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 03:27:23,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-08-19 03:27:23,035 INFO L87 Difference]: Start difference. First operand 218 states and 245 transitions. Second operand 11 states. [2020-08-19 03:27:23,759 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:24,012 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:24,247 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:24,961 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:25,226 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:27:25,481 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:25,724 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:26,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:27:26,721 INFO L93 Difference]: Finished difference Result 456 states and 540 transitions. [2020-08-19 03:27:26,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 03:27:26,723 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-08-19 03:27:26,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:27:26,726 INFO L225 Difference]: With dead ends: 456 [2020-08-19 03:27:26,726 INFO L226 Difference]: Without dead ends: 262 [2020-08-19 03:27:26,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2020-08-19 03:27:26,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-08-19 03:27:26,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 223. [2020-08-19 03:27:26,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-08-19 03:27:26,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 250 transitions. [2020-08-19 03:27:26,815 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 250 transitions. Word has length 79 [2020-08-19 03:27:26,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:27:26,815 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 250 transitions. [2020-08-19 03:27:26,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 03:27:26,816 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 250 transitions. [2020-08-19 03:27:26,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-19 03:27:26,821 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:27:26,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:27:26,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 03:27:26,821 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:27:26,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:27:26,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1196790941, now seen corresponding path program 1 times [2020-08-19 03:27:26,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:27:26,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388635849] [2020-08-19 03:27:26,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:27:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:27,198 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:27:27,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:27:27,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:27,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:27:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:27,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:27:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:27,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:27,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:27:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:27,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 03:27:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:27,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:27,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:27,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:27,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:27:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:27,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 03:27:27,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:27,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 03:27:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:27,344 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 03:27:27,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388635849] [2020-08-19 03:27:27,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:27:27,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 03:27:27,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208010690] [2020-08-19 03:27:27,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 03:27:27,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:27:27,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 03:27:27,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:27:27,347 INFO L87 Difference]: Start difference. First operand 223 states and 250 transitions. Second operand 12 states. [2020-08-19 03:27:27,856 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:27:28,152 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:28,405 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:28,638 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:29,177 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:30,117 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:30,425 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:27:30,700 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:27:30,942 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:27:31,231 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:27:31,508 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:27:32,862 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:27:33,221 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:33,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:27:33,867 INFO L93 Difference]: Finished difference Result 795 states and 1004 transitions. [2020-08-19 03:27:33,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 03:27:33,868 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-08-19 03:27:33,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:27:33,875 INFO L225 Difference]: With dead ends: 795 [2020-08-19 03:27:33,875 INFO L226 Difference]: Without dead ends: 596 [2020-08-19 03:27:33,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-19 03:27:33,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2020-08-19 03:27:33,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 534. [2020-08-19 03:27:33,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 534 states. [2020-08-19 03:27:33,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 617 transitions. [2020-08-19 03:27:33,992 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 617 transitions. Word has length 79 [2020-08-19 03:27:33,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:27:33,993 INFO L479 AbstractCegarLoop]: Abstraction has 534 states and 617 transitions. [2020-08-19 03:27:33,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 03:27:33,993 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 617 transitions. [2020-08-19 03:27:33,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 03:27:33,997 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:27:33,998 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, 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] [2020-08-19 03:27:33,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 03:27:33,998 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:27:33,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:27:33,999 INFO L82 PathProgramCache]: Analyzing trace with hash 754253541, now seen corresponding path program 1 times [2020-08-19 03:27:33,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:27:33,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880828953] [2020-08-19 03:27:33,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:27:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:34,310 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:27:34,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:27:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:34,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:27:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:34,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:27:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:34,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:34,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:27:34,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:34,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:27:34,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:34,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:27:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:34,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:34,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:34,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:34,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:34,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:27:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:34,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:34,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:34,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:34,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:34,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 03:27:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:34,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:34,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 03:27:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:34,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-19 03:27:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:34,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:34,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:34,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:34,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:34,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:27:34,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:34,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-19 03:27:34,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:34,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-19 03:27:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:34,614 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-19 03:27:34,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880828953] [2020-08-19 03:27:34,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:27:34,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 03:27:34,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968246337] [2020-08-19 03:27:34,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 03:27:34,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:27:34,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 03:27:34,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-19 03:27:34,619 INFO L87 Difference]: Start difference. First operand 534 states and 617 transitions. Second operand 11 states. [2020-08-19 03:27:35,294 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-19 03:27:35,819 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:27:37,579 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-19 03:27:39,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:27:39,230 INFO L93 Difference]: Finished difference Result 1040 states and 1284 transitions. [2020-08-19 03:27:39,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 03:27:39,233 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 154 [2020-08-19 03:27:39,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:27:39,238 INFO L225 Difference]: With dead ends: 1040 [2020-08-19 03:27:39,238 INFO L226 Difference]: Without dead ends: 660 [2020-08-19 03:27:39,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2020-08-19 03:27:39,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2020-08-19 03:27:39,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 618. [2020-08-19 03:27:39,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-08-19 03:27:39,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 733 transitions. [2020-08-19 03:27:39,370 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 733 transitions. Word has length 154 [2020-08-19 03:27:39,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:27:39,370 INFO L479 AbstractCegarLoop]: Abstraction has 618 states and 733 transitions. [2020-08-19 03:27:39,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 03:27:39,371 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 733 transitions. [2020-08-19 03:27:39,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-19 03:27:39,373 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:27:39,374 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, 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] [2020-08-19 03:27:39,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 03:27:39,374 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:27:39,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:27:39,375 INFO L82 PathProgramCache]: Analyzing trace with hash -205804435, now seen corresponding path program 1 times [2020-08-19 03:27:39,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:27:39,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765186630] [2020-08-19 03:27:39,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:27:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:39,694 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:27:39,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:27:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:39,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:27:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:39,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:27:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:39,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:39,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:27:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:39,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 03:27:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:39,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:39,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:39,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:39,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:39,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:27:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:39,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:39,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:39,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:39,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:39,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 03:27:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:39,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:39,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-19 03:27:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:39,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-19 03:27:39,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:39,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:39,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:39,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 03:27:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:39,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 03:27:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:39,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-19 03:27:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:39,875 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-19 03:27:39,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765186630] [2020-08-19 03:27:39,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:27:39,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 03:27:39,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115434853] [2020-08-19 03:27:39,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 03:27:39,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:27:39,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 03:27:39,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:27:39,878 INFO L87 Difference]: Start difference. First operand 618 states and 733 transitions. Second operand 12 states. [2020-08-19 03:27:40,362 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:40,616 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:40,831 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:41,416 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:41,658 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:41,869 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:42,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:27:42,970 INFO L93 Difference]: Finished difference Result 1241 states and 1528 transitions. [2020-08-19 03:27:42,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 03:27:42,970 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 143 [2020-08-19 03:27:42,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:27:42,975 INFO L225 Difference]: With dead ends: 1241 [2020-08-19 03:27:42,975 INFO L226 Difference]: Without dead ends: 647 [2020-08-19 03:27:42,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 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 03:27:42,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2020-08-19 03:27:43,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 608. [2020-08-19 03:27:43,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2020-08-19 03:27:43,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 720 transitions. [2020-08-19 03:27:43,100 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 720 transitions. Word has length 143 [2020-08-19 03:27:43,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:27:43,101 INFO L479 AbstractCegarLoop]: Abstraction has 608 states and 720 transitions. [2020-08-19 03:27:43,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 03:27:43,101 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 720 transitions. [2020-08-19 03:27:43,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-19 03:27:43,104 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:27:43,104 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, 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] [2020-08-19 03:27:43,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 03:27:43,105 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:27:43,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:27:43,105 INFO L82 PathProgramCache]: Analyzing trace with hash 677704555, now seen corresponding path program 1 times [2020-08-19 03:27:43,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:27:43,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046710443] [2020-08-19 03:27:43,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:27:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:43,328 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:27:43,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:27:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:43,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:27:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:43,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:27:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:43,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:43,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:27:43,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:43,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 03:27:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:43,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:43,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:43,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:43,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:43,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:27:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:43,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:43,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:43,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:43,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:43,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 03:27:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:43,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:43,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-19 03:27:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:43,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-19 03:27:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:43,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:43,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:43,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 03:27:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:43,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 03:27:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:43,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-19 03:27:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:43,566 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-19 03:27:43,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046710443] [2020-08-19 03:27:43,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:27:43,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 03:27:43,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823593574] [2020-08-19 03:27:43,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 03:27:43,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:27:43,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 03:27:43,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:27:43,569 INFO L87 Difference]: Start difference. First operand 608 states and 720 transitions. Second operand 10 states. [2020-08-19 03:27:45,184 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:45,429 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:27:45,681 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:45,916 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:46,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:27:46,789 INFO L93 Difference]: Finished difference Result 1115 states and 1379 transitions. [2020-08-19 03:27:46,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 03:27:46,790 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 143 [2020-08-19 03:27:46,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:27:46,794 INFO L225 Difference]: With dead ends: 1115 [2020-08-19 03:27:46,795 INFO L226 Difference]: Without dead ends: 531 [2020-08-19 03:27:46,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 03:27:46,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2020-08-19 03:27:46,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 503. [2020-08-19 03:27:46,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2020-08-19 03:27:46,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 592 transitions. [2020-08-19 03:27:46,913 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 592 transitions. Word has length 143 [2020-08-19 03:27:46,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:27:46,913 INFO L479 AbstractCegarLoop]: Abstraction has 503 states and 592 transitions. [2020-08-19 03:27:46,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 03:27:46,914 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 592 transitions. [2020-08-19 03:27:46,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-19 03:27:46,917 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:27:46,917 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, 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] [2020-08-19 03:27:46,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 03:27:46,918 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:27:46,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:27:46,918 INFO L82 PathProgramCache]: Analyzing trace with hash 744245076, now seen corresponding path program 1 times [2020-08-19 03:27:46,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:27:46,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308541753] [2020-08-19 03:27:46,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:27:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:47,241 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:27:47,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:27:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:47,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:27:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:47,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:27:47,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:47,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:47,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:27:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:47,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:27:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:47,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:27:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:47,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:47,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:47,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:47,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:47,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:47,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:47,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:27:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:47,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:47,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:47,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:47,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 03:27:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:47,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:47,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:47,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-19 03:27:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:47,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-19 03:27:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:47,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:47,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:47,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 03:27:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:47,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-19 03:27:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:47,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-19 03:27:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:47,578 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-08-19 03:27:47,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308541753] [2020-08-19 03:27:47,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:27:47,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 03:27:47,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098259325] [2020-08-19 03:27:47,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 03:27:47,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:27:47,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 03:27:47,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-19 03:27:47,581 INFO L87 Difference]: Start difference. First operand 503 states and 592 transitions. Second operand 15 states. [2020-08-19 03:27:48,415 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:27:49,196 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:50,165 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:50,484 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:50,751 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:51,032 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:27:51,347 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:27:51,620 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:27:52,193 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-19 03:27:52,728 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-19 03:27:53,619 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:53,865 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:54,140 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:27:54,372 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:27:55,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:27:55,039 INFO L93 Difference]: Finished difference Result 1337 states and 1633 transitions. [2020-08-19 03:27:55,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-19 03:27:55,040 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 147 [2020-08-19 03:27:55,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:27:55,046 INFO L225 Difference]: With dead ends: 1337 [2020-08-19 03:27:55,046 INFO L226 Difference]: Without dead ends: 858 [2020-08-19 03:27:55,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2020-08-19 03:27:55,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2020-08-19 03:27:55,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 816. [2020-08-19 03:27:55,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-08-19 03:27:55,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 943 transitions. [2020-08-19 03:27:55,241 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 943 transitions. Word has length 147 [2020-08-19 03:27:55,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:27:55,243 INFO L479 AbstractCegarLoop]: Abstraction has 816 states and 943 transitions. [2020-08-19 03:27:55,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 03:27:55,243 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 943 transitions. [2020-08-19 03:27:55,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-19 03:27:55,246 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:27:55,246 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:27:55,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 03:27:55,247 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:27:55,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:27:55,247 INFO L82 PathProgramCache]: Analyzing trace with hash 857110512, now seen corresponding path program 1 times [2020-08-19 03:27:55,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:27:55,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967413328] [2020-08-19 03:27:55,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:27:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:55,574 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:27:55,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:27:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:55,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:27:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:55,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:27:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:55,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:55,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:27:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:55,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:27:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:55,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:27:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:55,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:55,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:55,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:55,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:55,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:27:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:55,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:55,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:55,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:55,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:55,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 03:27:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:55,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:55,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:55,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-19 03:27:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:55,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-19 03:27:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:55,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-19 03:27:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:55,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:27:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:55,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:27:55,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:55,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 03:27:55,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:55,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-19 03:27:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:55,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 03:27:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:55,748 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-19 03:27:55,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967413328] [2020-08-19 03:27:55,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:27:55,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 03:27:55,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825633472] [2020-08-19 03:27:55,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 03:27:55,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:27:55,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 03:27:55,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-19 03:27:55,754 INFO L87 Difference]: Start difference. First operand 816 states and 943 transitions. Second operand 11 states. [2020-08-19 03:27:56,598 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:27:58,420 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:58,662 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:27:58,908 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:59,152 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:59,371 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:59,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:27:59,867 INFO L93 Difference]: Finished difference Result 967 states and 1196 transitions. [2020-08-19 03:27:59,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 03:27:59,868 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 151 [2020-08-19 03:27:59,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:27:59,874 INFO L225 Difference]: With dead ends: 967 [2020-08-19 03:27:59,874 INFO L226 Difference]: Without dead ends: 964 [2020-08-19 03:27:59,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2020-08-19 03:27:59,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2020-08-19 03:28:00,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 816. [2020-08-19 03:28:00,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-08-19 03:28:00,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 940 transitions. [2020-08-19 03:28:00,030 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 940 transitions. Word has length 151 [2020-08-19 03:28:00,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:28:00,030 INFO L479 AbstractCegarLoop]: Abstraction has 816 states and 940 transitions. [2020-08-19 03:28:00,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 03:28:00,030 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 940 transitions. [2020-08-19 03:28:00,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-19 03:28:00,033 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:28:00,033 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, 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] [2020-08-19 03:28:00,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 03:28:00,033 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:28:00,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:28:00,034 INFO L82 PathProgramCache]: Analyzing trace with hash -671566746, now seen corresponding path program 1 times [2020-08-19 03:28:00,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:28:00,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046035905] [2020-08-19 03:28:00,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:28:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:00,302 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:28:00,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:28:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:00,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:28:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:00,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:28:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:00,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:28:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:00,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:28:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:00,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:28:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:00,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:28:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:00,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:00,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:00,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:00,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:00,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:00,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:28:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:00,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:00,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:00,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:00,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:28:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:00,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 03:28:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:00,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:00,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-19 03:28:00,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:00,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-19 03:28:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:00,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:00,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:00,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 03:28:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:00,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:00,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:00,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-19 03:28:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:00,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 03:28:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:00,503 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 03:28:00,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046035905] [2020-08-19 03:28:00,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:28:00,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 03:28:00,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679638955] [2020-08-19 03:28:00,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 03:28:00,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:28:00,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 03:28:00,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:28:00,505 INFO L87 Difference]: Start difference. First operand 816 states and 940 transitions. Second operand 12 states. [2020-08-19 03:28:01,115 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:28:01,729 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:28:02,601 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:28:02,871 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:28:03,107 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:28:03,364 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:28:03,632 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:28:03,898 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:28:05,186 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:28:05,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:28:05,920 INFO L93 Difference]: Finished difference Result 1937 states and 2374 transitions. [2020-08-19 03:28:05,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-19 03:28:05,920 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 151 [2020-08-19 03:28:05,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:28:05,928 INFO L225 Difference]: With dead ends: 1937 [2020-08-19 03:28:05,928 INFO L226 Difference]: Without dead ends: 1271 [2020-08-19 03:28:05,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-19 03:28:05,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2020-08-19 03:28:06,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1102. [2020-08-19 03:28:06,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-08-19 03:28:06,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1285 transitions. [2020-08-19 03:28:06,144 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1285 transitions. Word has length 151 [2020-08-19 03:28:06,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:28:06,144 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1285 transitions. [2020-08-19 03:28:06,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 03:28:06,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1285 transitions. [2020-08-19 03:28:06,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-08-19 03:28:06,148 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:28:06,149 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:28:06,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 03:28:06,149 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:28:06,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:28:06,149 INFO L82 PathProgramCache]: Analyzing trace with hash -939199605, now seen corresponding path program 2 times [2020-08-19 03:28:06,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:28:06,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291730269] [2020-08-19 03:28:06,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:28:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 03:28:06,207 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 03:28:06,208 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 03:28:06,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 03:28:06,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 03:28:06 BoogieIcfgContainer [2020-08-19 03:28:06,260 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 03:28:06,261 INFO L168 Benchmark]: Toolchain (without parser) took 55683.39 ms. Allocated memory was 138.9 MB in the beginning and 766.5 MB in the end (delta: 627.6 MB). Free memory was 99.4 MB in the beginning and 470.7 MB in the end (delta: -371.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. [2020-08-19 03:28:06,263 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 03:28:06,265 INFO L168 Benchmark]: CACSL2BoogieTranslator took 681.05 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 99.2 MB in the beginning and 171.5 MB in the end (delta: -72.3 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2020-08-19 03:28:06,269 INFO L168 Benchmark]: Boogie Preprocessor took 89.57 ms. Allocated memory is still 202.4 MB. Free memory was 171.5 MB in the beginning and 167.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-19 03:28:06,270 INFO L168 Benchmark]: RCFGBuilder took 1292.43 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 166.8 MB in the beginning and 196.5 MB in the end (delta: -29.7 MB). Peak memory consumption was 85.5 MB. Max. memory is 7.1 GB. [2020-08-19 03:28:06,271 INFO L168 Benchmark]: TraceAbstraction took 53615.74 ms. Allocated memory was 234.4 MB in the beginning and 766.5 MB in the end (delta: 532.2 MB). Free memory was 196.5 MB in the beginning and 470.7 MB in the end (delta: -274.2 MB). Peak memory consumption was 258.0 MB. Max. memory is 7.1 GB. [2020-08-19 03:28:06,273 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 681.05 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 99.2 MB in the beginning and 171.5 MB in the end (delta: -72.3 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.57 ms. Allocated memory is still 202.4 MB. Free memory was 171.5 MB in the beginning and 167.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1292.43 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 166.8 MB in the beginning and 196.5 MB in the end (delta: -29.7 MB). Peak memory consumption was 85.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 53615.74 ms. Allocated memory was 234.4 MB in the beginning and 766.5 MB in the end (delta: 532.2 MB). Free memory was 196.5 MB in the beginning and 470.7 MB in the end (delta: -274.2 MB). Peak memory consumption was 258.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 543]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L342] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L555] int pumpRunning = 0; [L556] int systemActive = 1; [L758] int waterLevel = 1; [L759] int methaneLevelCritical = 0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L945] int retValue_acc ; [L948] retValue_acc = 1 [L949] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L853] int splverifierCounter ; [L854] int tmp ; [L855] int tmp___0 ; [L856] int tmp___1 ; [L857] int tmp___2 ; [L860] splverifierCounter = 0 [L862] COND TRUE 1 [L864] COND TRUE splverifierCounter < 4 [L870] tmp = __VERIFIER_nondet_int() [L872] COND TRUE \read(tmp) [L874] CALL waterRise() [L776] COND TRUE waterLevel < 2 [L777] waterLevel = waterLevel + 1 [L874] RET waterRise() [L880] tmp___0 = __VERIFIER_nondet_int() [L882] COND FALSE !(\read(tmp___0)) [L890] tmp___2 = __VERIFIER_nondet_int() [L892] COND FALSE !(\read(tmp___2)) [L898] tmp___1 = __VERIFIER_nondet_int() [L900] COND TRUE \read(tmp___1) [L907] CALL timeShift() [L562] COND FALSE !(\read(pumpRunning)) [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L617] int tmp ; [L620] COND FALSE !(\read(pumpRunning)) [L635] CALL processEnvironment__wrappee__methaneQuery() [L591] int tmp ; [L594] COND TRUE ! pumpRunning [L596] CALL, EXPR isHighWaterLevel() [L731] int retValue_acc ; [L732] int tmp ; [L733] int tmp___0 ; [L737] CALL, EXPR isHighWaterSensorDry() [L838] int retValue_acc ; [L841] COND FALSE !(waterLevel < 2) [L845] retValue_acc = 0 [L846] return (retValue_acc); [L737] RET, EXPR isHighWaterSensorDry() [L737] tmp = isHighWaterSensorDry() [L739] COND FALSE !(\read(tmp)) [L742] tmp___0 = 1 [L744] retValue_acc = tmp___0 [L745] return (retValue_acc); [L596] RET, EXPR isHighWaterLevel() [L596] tmp = isHighWaterLevel() [L598] COND TRUE \read(tmp) [L600] CALL activatePump() [L650] int tmp ; [L654] CALL, EXPR isMethaneAlarm() [L675] int retValue_acc ; [L679] CALL, EXPR isMethaneLevelCritical() [L797] int retValue_acc ; [L800] retValue_acc = methaneLevelCritical [L801] return (retValue_acc); [L679] RET, EXPR isMethaneLevelCritical() [L679] retValue_acc = isMethaneLevelCritical() [L681] return (retValue_acc); [L654] RET, EXPR isMethaneAlarm() [L654] tmp = isMethaneAlarm() [L656] COND FALSE !(\read(tmp)) [L660] CALL activatePump__wrappee__highWaterSensor() [L645] pumpRunning = 1 [L660] RET activatePump__wrappee__highWaterSensor() [L600] RET activatePump() [L635] RET processEnvironment__wrappee__methaneQuery() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L148] int tmp ; [L149] int tmp___0 ; [L153] CALL, EXPR getWaterLevel() [L829] int retValue_acc ; [L832] retValue_acc = waterLevel [L833] return (retValue_acc); [L153] RET, EXPR getWaterLevel() [L153] tmp = getWaterLevel() [L155] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L907] RET timeShift() [L862] COND TRUE 1 [L864] COND TRUE splverifierCounter < 4 [L870] tmp = __VERIFIER_nondet_int() [L872] COND FALSE !(\read(tmp)) [L880] tmp___0 = __VERIFIER_nondet_int() [L882] COND FALSE !(\read(tmp___0)) [L890] tmp___2 = __VERIFIER_nondet_int() [L892] COND FALSE !(\read(tmp___2)) [L898] tmp___1 = __VERIFIER_nondet_int() [L900] COND TRUE \read(tmp___1) [L907] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L764] COND TRUE waterLevel > 0 [L765] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L617] int tmp ; [L620] COND TRUE \read(pumpRunning) [L622] CALL, EXPR isMethaneAlarm() [L675] int retValue_acc ; [L679] CALL, EXPR isMethaneLevelCritical() [L797] int retValue_acc ; [L800] retValue_acc = methaneLevelCritical [L801] return (retValue_acc); [L679] RET, EXPR isMethaneLevelCritical() [L679] retValue_acc = isMethaneLevelCritical() [L681] return (retValue_acc); [L622] RET, EXPR isMethaneAlarm() [L622] tmp = isMethaneAlarm() [L624] COND FALSE !(\read(tmp)) [L630] CALL processEnvironment__wrappee__methaneQuery() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L630] RET processEnvironment__wrappee__methaneQuery() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L148] int tmp ; [L149] int tmp___0 ; [L153] CALL, EXPR getWaterLevel() [L829] int retValue_acc ; [L832] retValue_acc = waterLevel [L833] return (retValue_acc); [L153] RET, EXPR getWaterLevel() [L153] tmp = getWaterLevel() [L155] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L907] RET timeShift() [L862] COND TRUE 1 [L864] COND TRUE splverifierCounter < 4 [L870] tmp = __VERIFIER_nondet_int() [L872] COND FALSE !(\read(tmp)) [L880] tmp___0 = __VERIFIER_nondet_int() [L882] COND FALSE !(\read(tmp___0)) [L890] tmp___2 = __VERIFIER_nondet_int() [L892] COND FALSE !(\read(tmp___2)) [L898] tmp___1 = __VERIFIER_nondet_int() [L900] COND TRUE \read(tmp___1) [L907] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L764] COND TRUE waterLevel > 0 [L765] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L617] int tmp ; [L620] COND TRUE \read(pumpRunning) [L622] CALL, EXPR isMethaneAlarm() [L675] int retValue_acc ; [L679] CALL, EXPR isMethaneLevelCritical() [L797] int retValue_acc ; [L800] retValue_acc = methaneLevelCritical [L801] return (retValue_acc); [L679] RET, EXPR isMethaneLevelCritical() [L679] retValue_acc = isMethaneLevelCritical() [L681] return (retValue_acc); [L622] RET, EXPR isMethaneAlarm() [L622] tmp = isMethaneAlarm() [L624] COND FALSE !(\read(tmp)) [L630] CALL processEnvironment__wrappee__methaneQuery() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L630] RET processEnvironment__wrappee__methaneQuery() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L148] int tmp ; [L149] int tmp___0 ; [L153] CALL, EXPR getWaterLevel() [L829] int retValue_acc ; [L832] retValue_acc = waterLevel [L833] return (retValue_acc); [L153] RET, EXPR getWaterLevel() [L153] tmp = getWaterLevel() [L155] COND TRUE tmp == 0 [L157] CALL, EXPR isPumpRunning() [L686] int retValue_acc ; [L689] retValue_acc = pumpRunning [L690] return (retValue_acc); [L157] RET, EXPR isPumpRunning() [L157] tmp___0 = isPumpRunning() [L159] COND TRUE \read(tmp___0) [L161] CALL __automaton_fail() [L543] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 236 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 53.5s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 45.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1600 SDtfs, 4231 SDslu, 2034 SDs, 0 SdLazy, 11186 SolverSat, 2938 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 660 GetRequests, 452 SyntacticMatches, 7 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 20.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1102occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 703 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 1460 NumberOfCodeBlocks, 1460 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1245 ConstructedInterpolants, 0 QuantifiedInterpolants, 474746 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 188/217 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...