/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=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:15:28,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:15:28,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:15:28,865 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:15:28,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:15:28,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:15:28,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:15:28,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:15:28,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:15:28,887 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:15:28,888 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:15:28,889 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:15:28,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:15:28,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:15:28,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:15:28,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:15:28,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:15:28,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:15:28,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:15:28,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:15:28,911 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:15:28,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:15:28,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:15:28,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:15:28,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:15:28,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:15:28,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:15:28,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:15:28,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:15:28,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:15:28,928 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:15:28,932 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:15:28,933 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:15:28,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:15:28,934 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:15:28,935 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:15:28,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:15:28,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:15:28,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:15:28,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:15:28,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:15:28,938 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 04:15:28,960 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:15:28,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:15:28,961 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:15:28,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:15:28,962 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:15:28,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:15:28,962 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:15:28,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:15:28,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:15:28,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:15:28,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:15:28,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:15:28,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:15:28,964 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:15:28,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:15:28,964 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:15:28,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:15:28,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:15:28,965 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:15:28,965 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:15:28,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:15:28,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:15:28,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:15:28,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:15:28,966 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:15:28,966 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:15:28,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:15:28,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:15:28,966 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:15:28,967 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=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:15:29,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:15:29,259 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:15:29,262 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:15:29,264 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:15:29,264 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:15:29,265 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c [2020-08-19 04:15:29,340 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2030b6f92/82bb6a31127d4343ab28c7fd92987cff/FLAG4beadb1db [2020-08-19 04:15:29,881 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:15:29,881 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c [2020-08-19 04:15:29,897 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2030b6f92/82bb6a31127d4343ab28c7fd92987cff/FLAG4beadb1db [2020-08-19 04:15:30,184 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2030b6f92/82bb6a31127d4343ab28c7fd92987cff [2020-08-19 04:15:30,193 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:15:30,194 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:15:30,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:15:30,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:15:30,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:15:30,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:15:30" (1/1) ... [2020-08-19 04:15:30,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56344ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:30, skipping insertion in model container [2020-08-19 04:15:30,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:15:30" (1/1) ... [2020-08-19 04:15:30,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:15:30,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:15:30,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:15:30,821 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:15:30,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:15:30,956 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:15:30,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:30 WrapperNode [2020-08-19 04:15:30,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:15:30,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:15:30,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:15:30,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:15:30,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:30" (1/1) ... [2020-08-19 04:15:30,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:30" (1/1) ... [2020-08-19 04:15:30,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:30" (1/1) ... [2020-08-19 04:15:30,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:30" (1/1) ... [2020-08-19 04:15:31,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:30" (1/1) ... [2020-08-19 04:15:31,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:30" (1/1) ... [2020-08-19 04:15:31,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:30" (1/1) ... [2020-08-19 04:15:31,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:15:31,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:15:31,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:15:31,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:15:31,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:30" (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 04:15:31,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:15:31,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:15:31,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 04:15:31,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-19 04:15:31,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 04:15:31,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 04:15:31,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 04:15:31,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 04:15:31,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 04:15:31,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 04:15:31,137 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 04:15:31,137 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 04:15:31,138 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 04:15:31,138 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 04:15:31,138 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 04:15:31,138 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 04:15:31,138 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 04:15:31,138 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 04:15:31,138 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-19 04:15:31,139 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 04:15:31,139 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 04:15:31,139 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 04:15:31,139 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 04:15:31,139 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 04:15:31,139 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 04:15:31,139 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 04:15:31,140 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 04:15:31,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 04:15:31,140 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 04:15:31,140 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 04:15:31,140 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 04:15:31,141 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 04:15:31,141 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:15:31,141 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 04:15:31,141 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 04:15:31,141 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 04:15:31,141 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 04:15:31,141 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 04:15:31,142 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 04:15:31,142 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 04:15:31,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:15:31,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:15:31,142 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 04:15:31,142 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 04:15:31,143 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 04:15:31,143 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 04:15:31,143 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-19 04:15:31,143 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 04:15:31,143 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 04:15:31,143 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 04:15:31,144 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 04:15:31,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 04:15:31,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 04:15:31,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:15:31,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 04:15:31,144 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 04:15:31,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:15:31,145 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 04:15:31,145 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 04:15:31,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:15:31,145 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 04:15:31,145 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 04:15:31,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:15:31,146 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 04:15:31,146 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 04:15:31,146 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 04:15:31,146 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 04:15:31,146 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 04:15:31,147 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 04:15:31,147 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 04:15:31,147 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 04:15:31,147 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 04:15:31,147 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 04:15:31,147 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 04:15:31,147 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 04:15:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 04:15:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 04:15:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 04:15:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 04:15:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 04:15:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 04:15:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 04:15:31,149 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 04:15:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 04:15:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 04:15:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-19 04:15:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 04:15:31,151 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 04:15:31,151 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 04:15:31,151 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 04:15:31,151 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:15:31,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:15:31,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 04:15:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:15:32,249 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:15:32,249 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 04:15:32,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:15:32 BoogieIcfgContainer [2020-08-19 04:15:32,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:15:32,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:15:32,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:15:32,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:15:32,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:15:30" (1/3) ... [2020-08-19 04:15:32,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f23b987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:15:32, skipping insertion in model container [2020-08-19 04:15:32,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:30" (2/3) ... [2020-08-19 04:15:32,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f23b987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:15:32, skipping insertion in model container [2020-08-19 04:15:32,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:15:32" (3/3) ... [2020-08-19 04:15:32,269 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product44.cil.c [2020-08-19 04:15:32,280 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:15:32,291 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:15:32,302 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:15:32,326 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:15:32,326 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:15:32,326 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:15:32,326 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:15:32,327 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:15:32,327 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:15:32,327 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:15:32,327 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:15:32,350 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states. [2020-08-19 04:15:32,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 04:15:32,360 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:15:32,361 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 04:15:32,361 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:15:32,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:15:32,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1915366745, now seen corresponding path program 1 times [2020-08-19 04:15:32,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:15:32,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373082378] [2020-08-19 04:15:32,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:15:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:33,084 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:15:33,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:15:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:33,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:15:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:33,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:15:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:33,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:15:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:33,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:15:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:33,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:15:33,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:33,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:15:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:33,189 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 04:15:33,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373082378] [2020-08-19 04:15:33,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:15:33,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:15:33,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275126079] [2020-08-19 04:15:33,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:15:33,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:15:33,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:15:33,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:15:33,216 INFO L87 Difference]: Start difference. First operand 176 states. Second operand 3 states. [2020-08-19 04:15:34,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:15:34,336 INFO L93 Difference]: Finished difference Result 310 states and 398 transitions. [2020-08-19 04:15:34,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:15:34,338 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 04:15:34,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:15:34,353 INFO L225 Difference]: With dead ends: 310 [2020-08-19 04:15:34,354 INFO L226 Difference]: Without dead ends: 168 [2020-08-19 04:15:34,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:15:34,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-19 04:15:34,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 133. [2020-08-19 04:15:34,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-19 04:15:34,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 153 transitions. [2020-08-19 04:15:34,451 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 153 transitions. Word has length 46 [2020-08-19 04:15:34,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:15:34,452 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 153 transitions. [2020-08-19 04:15:34,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:15:34,452 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 153 transitions. [2020-08-19 04:15:34,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 04:15:34,456 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:15:34,456 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 04:15:34,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:15:34,456 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:15:34,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:15:34,457 INFO L82 PathProgramCache]: Analyzing trace with hash -868486899, now seen corresponding path program 1 times [2020-08-19 04:15:34,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:15:34,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181615794] [2020-08-19 04:15:34,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:15:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:34,870 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:15:34,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:15:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:34,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:15:34,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:34,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:15:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:34,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:15:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:34,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:15:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:34,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 04:15:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:34,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:15:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:34,911 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 04:15:34,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181615794] [2020-08-19 04:15:34,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:15:34,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:15:34,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682607694] [2020-08-19 04:15:34,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:15:34,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:15:34,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:15:34,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:15:34,915 INFO L87 Difference]: Start difference. First operand 133 states and 153 transitions. Second operand 4 states. [2020-08-19 04:15:35,307 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:15:36,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:15:36,160 INFO L93 Difference]: Finished difference Result 230 states and 275 transitions. [2020-08-19 04:15:36,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:15:36,162 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 04:15:36,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:15:36,165 INFO L225 Difference]: With dead ends: 230 [2020-08-19 04:15:36,165 INFO L226 Difference]: Without dead ends: 152 [2020-08-19 04:15:36,166 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 04:15:36,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-08-19 04:15:36,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 124. [2020-08-19 04:15:36,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-19 04:15:36,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 141 transitions. [2020-08-19 04:15:36,206 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 141 transitions. Word has length 47 [2020-08-19 04:15:36,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:15:36,207 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 141 transitions. [2020-08-19 04:15:36,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:15:36,207 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 141 transitions. [2020-08-19 04:15:36,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 04:15:36,209 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:15:36,209 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 04:15:36,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:15:36,210 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:15:36,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:15:36,210 INFO L82 PathProgramCache]: Analyzing trace with hash -905097918, now seen corresponding path program 1 times [2020-08-19 04:15:36,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:15:36,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381098113] [2020-08-19 04:15:36,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:15:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:36,556 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:15:36,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:15:36,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:36,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:15:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:36,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:15:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:36,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:15:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:36,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:15:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:36,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:15:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:36,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 04:15:36,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:36,664 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 04:15:36,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381098113] [2020-08-19 04:15:36,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:15:36,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:15:36,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677804018] [2020-08-19 04:15:36,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:15:36,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:15:36,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:15:36,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:15:36,675 INFO L87 Difference]: Start difference. First operand 124 states and 141 transitions. Second operand 8 states. [2020-08-19 04:15:37,065 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:15:37,390 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:37,651 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:37,895 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:38,631 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:15:40,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:15:40,298 INFO L93 Difference]: Finished difference Result 427 states and 518 transitions. [2020-08-19 04:15:40,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 04:15:40,299 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-19 04:15:40,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:15:40,304 INFO L225 Difference]: With dead ends: 427 [2020-08-19 04:15:40,305 INFO L226 Difference]: Without dead ends: 327 [2020-08-19 04:15:40,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-19 04:15:40,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-08-19 04:15:40,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 250. [2020-08-19 04:15:40,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-08-19 04:15:40,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 294 transitions. [2020-08-19 04:15:40,378 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 294 transitions. Word has length 52 [2020-08-19 04:15:40,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:15:40,378 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 294 transitions. [2020-08-19 04:15:40,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:15:40,379 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 294 transitions. [2020-08-19 04:15:40,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 04:15:40,381 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:15:40,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:15:40,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 04:15:40,382 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:15:40,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:15:40,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1583600214, now seen corresponding path program 1 times [2020-08-19 04:15:40,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:15:40,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153216049] [2020-08-19 04:15:40,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:15:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,714 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:15:40,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:15:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:15:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:15:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:15:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:15:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 04:15:40,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:15:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 04:15:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,882 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 04:15:40,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153216049] [2020-08-19 04:15:40,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:15:40,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 04:15:40,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002197520] [2020-08-19 04:15:40,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 04:15:40,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:15:40,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 04:15:40,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 04:15:40,885 INFO L87 Difference]: Start difference. First operand 250 states and 294 transitions. Second operand 12 states. [2020-08-19 04:15:41,295 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:15:41,645 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:41,903 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:42,168 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:42,739 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:15:43,469 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:43,826 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:15:44,087 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:15:44,382 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:15:44,627 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:15:45,023 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:15:45,278 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:15:45,501 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:47,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:15:47,068 INFO L93 Difference]: Finished difference Result 1013 states and 1362 transitions. [2020-08-19 04:15:47,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 04:15:47,069 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-19 04:15:47,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:15:47,087 INFO L225 Difference]: With dead ends: 1013 [2020-08-19 04:15:47,087 INFO L226 Difference]: Without dead ends: 787 [2020-08-19 04:15:47,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-19 04:15:47,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-08-19 04:15:47,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 690. [2020-08-19 04:15:47,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-08-19 04:15:47,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 848 transitions. [2020-08-19 04:15:47,262 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 848 transitions. Word has length 57 [2020-08-19 04:15:47,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:15:47,262 INFO L479 AbstractCegarLoop]: Abstraction has 690 states and 848 transitions. [2020-08-19 04:15:47,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 04:15:47,263 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 848 transitions. [2020-08-19 04:15:47,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 04:15:47,266 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:15:47,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:15:47,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 04:15:47,267 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:15:47,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:15:47,268 INFO L82 PathProgramCache]: Analyzing trace with hash -436303684, now seen corresponding path program 1 times [2020-08-19 04:15:47,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:15:47,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045893149] [2020-08-19 04:15:47,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:15:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,528 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:15:47,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:15:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:15:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:15:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:15:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:15:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 04:15:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 04:15:47,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 04:15:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 04:15:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,636 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 04:15:47,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045893149] [2020-08-19 04:15:47,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:15:47,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 04:15:47,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986896880] [2020-08-19 04:15:47,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 04:15:47,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:15:47,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 04:15:47,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:15:47,640 INFO L87 Difference]: Start difference. First operand 690 states and 848 transitions. Second operand 6 states. [2020-08-19 04:15:47,942 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:15:49,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:15:49,733 INFO L93 Difference]: Finished difference Result 1681 states and 2195 transitions. [2020-08-19 04:15:49,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 04:15:49,737 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-19 04:15:49,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:15:49,743 INFO L225 Difference]: With dead ends: 1681 [2020-08-19 04:15:49,743 INFO L226 Difference]: Without dead ends: 1015 [2020-08-19 04:15:49,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-19 04:15:49,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-08-19 04:15:49,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 948. [2020-08-19 04:15:49,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 948 states. [2020-08-19 04:15:49,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1172 transitions. [2020-08-19 04:15:49,934 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1172 transitions. Word has length 61 [2020-08-19 04:15:49,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:15:49,934 INFO L479 AbstractCegarLoop]: Abstraction has 948 states and 1172 transitions. [2020-08-19 04:15:49,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 04:15:49,934 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1172 transitions. [2020-08-19 04:15:49,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-19 04:15:49,937 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:15:49,938 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:15:49,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 04:15:49,938 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:15:49,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:15:49,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1209411089, now seen corresponding path program 1 times [2020-08-19 04:15:49,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:15:49,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70244005] [2020-08-19 04:15:49,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:15:49,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:50,225 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:15:50,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:15:50,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:50,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:15:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:50,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:15:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:50,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:15:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:50,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:15:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:50,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 04:15:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:50,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:15:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:50,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 04:15:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:50,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:15:50,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:50,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:15:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:50,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 04:15:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:50,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 04:15:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:50,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 04:15:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:50,375 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 04:15:50,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70244005] [2020-08-19 04:15:50,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:15:50,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 04:15:50,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432715384] [2020-08-19 04:15:50,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 04:15:50,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:15:50,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 04:15:50,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-19 04:15:50,378 INFO L87 Difference]: Start difference. First operand 948 states and 1172 transitions. Second operand 10 states. [2020-08-19 04:15:50,979 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-19 04:15:51,620 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:15:53,675 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:15:55,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:15:55,304 INFO L93 Difference]: Finished difference Result 1803 states and 2319 transitions. [2020-08-19 04:15:55,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 04:15:55,305 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-19 04:15:55,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:15:55,312 INFO L225 Difference]: With dead ends: 1803 [2020-08-19 04:15:55,312 INFO L226 Difference]: Without dead ends: 1150 [2020-08-19 04:15:55,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-19 04:15:55,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2020-08-19 04:15:55,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1055. [2020-08-19 04:15:55,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2020-08-19 04:15:55,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1284 transitions. [2020-08-19 04:15:55,686 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1284 transitions. Word has length 89 [2020-08-19 04:15:55,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:15:55,689 INFO L479 AbstractCegarLoop]: Abstraction has 1055 states and 1284 transitions. [2020-08-19 04:15:55,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 04:15:55,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1284 transitions. [2020-08-19 04:15:55,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-19 04:15:55,697 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:15:55,697 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:15:55,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 04:15:55,698 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:15:55,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:15:55,698 INFO L82 PathProgramCache]: Analyzing trace with hash 2033395005, now seen corresponding path program 1 times [2020-08-19 04:15:55,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:15:55,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536366408] [2020-08-19 04:15:55,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:15:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:55,975 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:15:55,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:15:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:55,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:15:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:56,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:15:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:56,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:15:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:56,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:15:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:56,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 04:15:56,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:56,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:15:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:56,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:15:56,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:56,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:15:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:56,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:15:56,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:56,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:15:56,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:56,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:15:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:56,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:15:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:56,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 04:15:56,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:56,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:15:56,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:56,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 04:15:56,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:56,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-19 04:15:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:56,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-19 04:15:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:56,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:15:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:56,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 04:15:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:56,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-19 04:15:56,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:56,147 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 04:15:56,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536366408] [2020-08-19 04:15:56,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:15:56,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 04:15:56,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108227935] [2020-08-19 04:15:56,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 04:15:56,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:15:56,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 04:15:56,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 04:15:56,150 INFO L87 Difference]: Start difference. First operand 1055 states and 1284 transitions. Second operand 10 states. [2020-08-19 04:15:57,096 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:57,341 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:15:57,608 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:15:57,849 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:15:58,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:15:58,906 INFO L93 Difference]: Finished difference Result 2230 states and 2894 transitions. [2020-08-19 04:15:58,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 04:15:58,907 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 130 [2020-08-19 04:15:58,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:15:58,916 INFO L225 Difference]: With dead ends: 2230 [2020-08-19 04:15:58,917 INFO L226 Difference]: Without dead ends: 1199 [2020-08-19 04:15:58,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 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 04:15:58,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2020-08-19 04:15:59,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1085. [2020-08-19 04:15:59,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1085 states. [2020-08-19 04:15:59,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1318 transitions. [2020-08-19 04:15:59,162 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1318 transitions. Word has length 130 [2020-08-19 04:15:59,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:15:59,162 INFO L479 AbstractCegarLoop]: Abstraction has 1085 states and 1318 transitions. [2020-08-19 04:15:59,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 04:15:59,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1318 transitions. [2020-08-19 04:15:59,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-08-19 04:15:59,166 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:15:59,166 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:15:59,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 04:15:59,166 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:15:59,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:15:59,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1477382459, now seen corresponding path program 1 times [2020-08-19 04:15:59,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:15:59,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682537072] [2020-08-19 04:15:59,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:15:59,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:59,459 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:15:59,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:15:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:59,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:15:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:59,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:15:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:59,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:15:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:59,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:15:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:59,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 04:15:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:59,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:15:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:59,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:15:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:59,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:15:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:59,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:15:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:59,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:15:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:59,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:15:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:59,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:15:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:59,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 04:15:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:59,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:15:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:59,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-19 04:15:59,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:59,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-19 04:15:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:59,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:15:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:59,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 04:15:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:59,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-19 04:15:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:59,675 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 04:15:59,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682537072] [2020-08-19 04:15:59,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:15:59,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 04:15:59,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761227670] [2020-08-19 04:15:59,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 04:15:59,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:15:59,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 04:15:59,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-19 04:15:59,680 INFO L87 Difference]: Start difference. First operand 1085 states and 1318 transitions. Second operand 12 states. [2020-08-19 04:16:00,167 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:16:00,414 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:16:00,660 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:16:01,389 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:16:01,678 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:16:01,929 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:16:02,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:16:02,974 INFO L93 Difference]: Finished difference Result 1969 states and 2463 transitions. [2020-08-19 04:16:02,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 04:16:02,976 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 126 [2020-08-19 04:16:02,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:16:02,983 INFO L225 Difference]: With dead ends: 1969 [2020-08-19 04:16:02,983 INFO L226 Difference]: Without dead ends: 908 [2020-08-19 04:16:02,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 04:16:02,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2020-08-19 04:16:03,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 856. [2020-08-19 04:16:03,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 856 states. [2020-08-19 04:16:03,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1029 transitions. [2020-08-19 04:16:03,167 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1029 transitions. Word has length 126 [2020-08-19 04:16:03,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:16:03,168 INFO L479 AbstractCegarLoop]: Abstraction has 856 states and 1029 transitions. [2020-08-19 04:16:03,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 04:16:03,168 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1029 transitions. [2020-08-19 04:16:03,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-19 04:16:03,172 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:16:03,172 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:16:03,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 04:16:03,172 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:16:03,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:16:03,173 INFO L82 PathProgramCache]: Analyzing trace with hash -41255168, now seen corresponding path program 1 times [2020-08-19 04:16:03,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:16:03,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715954530] [2020-08-19 04:16:03,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:16:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:03,592 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:16:03,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:16:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:03,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:16:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:03,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:16:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:03,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:16:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:03,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:16:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:03,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 04:16:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:03,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:16:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:03,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:16:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:03,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:16:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:03,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:16:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:03,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:16:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:03,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:16:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:03,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:16:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:03,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:16:03,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:03,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 04:16:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:03,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:16:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:03,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-19 04:16:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:03,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-19 04:16:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:03,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:16:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:03,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 04:16:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:03,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-19 04:16:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:03,789 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:16:03,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715954530] [2020-08-19 04:16:03,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:16:03,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 04:16:03,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6272051] [2020-08-19 04:16:03,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 04:16:03,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:16:03,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 04:16:03,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-19 04:16:03,792 INFO L87 Difference]: Start difference. First operand 856 states and 1029 transitions. Second operand 12 states. [2020-08-19 04:16:04,237 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:16:05,111 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:16:05,415 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:16:05,668 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:16:05,914 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:16:06,180 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:16:06,558 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:16:07,146 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:16:07,425 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:16:07,716 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:16:09,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:16:09,480 INFO L93 Difference]: Finished difference Result 2072 states and 2648 transitions. [2020-08-19 04:16:09,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 04:16:09,481 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-08-19 04:16:09,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:16:09,490 INFO L225 Difference]: With dead ends: 2072 [2020-08-19 04:16:09,490 INFO L226 Difference]: Without dead ends: 1389 [2020-08-19 04:16:09,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2020-08-19 04:16:09,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2020-08-19 04:16:09,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1217. [2020-08-19 04:16:09,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1217 states. [2020-08-19 04:16:09,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1483 transitions. [2020-08-19 04:16:09,730 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1483 transitions. Word has length 130 [2020-08-19 04:16:09,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:16:09,732 INFO L479 AbstractCegarLoop]: Abstraction has 1217 states and 1483 transitions. [2020-08-19 04:16:09,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 04:16:09,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1483 transitions. [2020-08-19 04:16:09,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-08-19 04:16:09,738 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:16:09,738 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:16:09,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 04:16:09,738 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:16:09,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:16:09,739 INFO L82 PathProgramCache]: Analyzing trace with hash -786970621, now seen corresponding path program 1 times [2020-08-19 04:16:09,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:16:09,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403701135] [2020-08-19 04:16:09,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:16:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:10,135 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:16:10,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:16:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:10,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:16:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:10,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:16:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:10,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:16:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:10,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:16:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:10,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 04:16:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:10,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:16:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:10,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:16:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:10,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:16:10,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:10,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:16:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:10,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:16:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:10,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:16:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:10,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:16:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:10,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:16:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:10,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 04:16:10,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:10,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:16:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:10,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 04:16:10,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:10,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:16:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:10,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:16:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:10,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:16:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:10,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 04:16:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:10,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:16:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:10,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-19 04:16:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:10,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-19 04:16:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:10,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-19 04:16:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:10,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-19 04:16:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:16:10,371 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-19 04:16:10,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403701135] [2020-08-19 04:16:10,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:16:10,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 04:16:10,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336548493] [2020-08-19 04:16:10,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 04:16:10,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:16:10,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 04:16:10,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-08-19 04:16:10,377 INFO L87 Difference]: Start difference. First operand 1217 states and 1483 transitions. Second operand 13 states. [2020-08-19 04:16:10,987 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:16:11,245 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:16:11,489 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:16:11,956 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:16:13,117 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:16:14,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:16:14,195 INFO L93 Difference]: Finished difference Result 2226 states and 2782 transitions. [2020-08-19 04:16:14,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-19 04:16:14,200 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 163 [2020-08-19 04:16:14,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:16:14,208 INFO L225 Difference]: With dead ends: 2226 [2020-08-19 04:16:14,208 INFO L226 Difference]: Without dead ends: 1233 [2020-08-19 04:16:14,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2020-08-19 04:16:14,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2020-08-19 04:16:14,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 911. [2020-08-19 04:16:14,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 911 states. [2020-08-19 04:16:14,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1058 transitions. [2020-08-19 04:16:14,414 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1058 transitions. Word has length 163 [2020-08-19 04:16:14,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:16:14,415 INFO L479 AbstractCegarLoop]: Abstraction has 911 states and 1058 transitions. [2020-08-19 04:16:14,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 04:16:14,415 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1058 transitions. [2020-08-19 04:16:14,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-19 04:16:14,418 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:16:14,418 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, 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] [2020-08-19 04:16:14,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 04:16:14,419 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:16:14,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:16:14,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1876724494, now seen corresponding path program 2 times [2020-08-19 04:16:14,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:16:14,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455588515] [2020-08-19 04:16:14,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:16:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 04:16:14,483 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 04:16:14,483 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 04:16:14,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 04:16:14,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 04:16:14 BoogieIcfgContainer [2020-08-19 04:16:14,518 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 04:16:14,520 INFO L168 Benchmark]: Toolchain (without parser) took 44326.14 ms. Allocated memory was 141.0 MB in the beginning and 776.5 MB in the end (delta: 635.4 MB). Free memory was 103.2 MB in the beginning and 470.6 MB in the end (delta: -367.4 MB). Peak memory consumption was 268.1 MB. Max. memory is 7.1 GB. [2020-08-19 04:16:14,521 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 04:16:14,522 INFO L168 Benchmark]: CACSL2BoogieTranslator took 762.08 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.0 MB in the beginning and 171.0 MB in the end (delta: -68.0 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2020-08-19 04:16:14,522 INFO L168 Benchmark]: Boogie Preprocessor took 108.81 ms. Allocated memory is still 204.5 MB. Free memory was 171.0 MB in the beginning and 166.3 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-08-19 04:16:14,523 INFO L168 Benchmark]: RCFGBuilder took 1191.46 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 166.3 MB in the beginning and 193.4 MB in the end (delta: -27.2 MB). Peak memory consumption was 79.1 MB. Max. memory is 7.1 GB. [2020-08-19 04:16:14,524 INFO L168 Benchmark]: TraceAbstraction took 42257.88 ms. Allocated memory was 236.5 MB in the beginning and 776.5 MB in the end (delta: 540.0 MB). Free memory was 192.0 MB in the beginning and 470.6 MB in the end (delta: -278.5 MB). Peak memory consumption was 261.5 MB. Max. memory is 7.1 GB. [2020-08-19 04:16:14,527 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 762.08 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.0 MB in the beginning and 171.0 MB in the end (delta: -68.0 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.81 ms. Allocated memory is still 204.5 MB. Free memory was 171.0 MB in the beginning and 166.3 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1191.46 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 166.3 MB in the beginning and 193.4 MB in the end (delta: -27.2 MB). Peak memory consumption was 79.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 42257.88 ms. Allocated memory was 236.5 MB in the beginning and 776.5 MB in the end (delta: 540.0 MB). Free memory was 192.0 MB in the beginning and 470.6 MB in the end (delta: -278.5 MB). Peak memory consumption was 261.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 752]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L238] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L555] int pumpRunning = 0; [L556] int systemActive = 1; [L757] int cleanupTimeShifts = 4; [L853] int waterLevel = 1; [L854] int methaneLevelCritical = 0; [L830] int retValue_acc ; [L831] int tmp ; [L835] FCALL select_helpers() [L836] FCALL select_features() [L837] CALL, EXPR valid_product() [L464] int retValue_acc ; [L467] retValue_acc = 1 [L468] return (retValue_acc); [L837] RET, EXPR valid_product() [L837] tmp = valid_product() [L839] COND TRUE \read(tmp) [L841] FCALL setup() [L842] CALL runTest() [L824] CALL test() [L480] int splverifierCounter ; [L481] int tmp ; [L482] int tmp___0 ; [L483] int tmp___1 ; [L484] int tmp___2 ; [L487] splverifierCounter = 0 [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND TRUE \read(tmp) [L501] CALL waterRise() [L871] COND TRUE waterLevel < 2 [L872] waterLevel = waterLevel + 1 [L501] RET waterRise() [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___2)) [L525] tmp___1 = __VERIFIER_nondet_int() [L527] COND FALSE !(\read(tmp___1)) [L536] CALL timeShift() [L562] COND FALSE !(\read(pumpRunning)) [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND TRUE ! pumpRunning [L596] CALL, EXPR isHighWaterLevel() [L706] int retValue_acc ; [L707] int tmp ; [L708] int tmp___0 ; [L712] CALL, EXPR isHighWaterSensorDry() [L933] int retValue_acc ; [L936] COND FALSE !(waterLevel < 2) [L940] retValue_acc = 0 [L941] return (retValue_acc); [L712] RET, EXPR isHighWaterSensorDry() [L712] tmp = isHighWaterSensorDry() [L714] COND FALSE !(\read(tmp)) [L717] tmp___0 = 1 [L719] retValue_acc = tmp___0 [L720] return (retValue_acc); [L596] RET, EXPR isHighWaterLevel() [L596] tmp = isHighWaterLevel() [L598] COND TRUE \read(tmp) [L600] CALL activatePump() [L625] int tmp ; [L629] CALL, EXPR isMethaneAlarm() [L650] int retValue_acc ; [L654] CALL, EXPR isMethaneLevelCritical() [L892] int retValue_acc ; [L895] retValue_acc = methaneLevelCritical [L896] return (retValue_acc); [L654] RET, EXPR isMethaneLevelCritical() [L654] retValue_acc = isMethaneLevelCritical() [L656] return (retValue_acc); [L629] RET, EXPR isMethaneAlarm() [L629] tmp = isMethaneAlarm() [L631] COND FALSE !(\read(tmp)) [L635] CALL activatePump__wrappee__highWaterSensor() [L619] pumpRunning = 1 [L635] RET activatePump__wrappee__highWaterSensor() [L600] RET activatePump() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L536] RET timeShift() [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND FALSE !(\read(tmp)) [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___2)) [L525] tmp___1 = __VERIFIER_nondet_int() [L527] COND FALSE !(\read(tmp___1)) [L536] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L859] COND TRUE waterLevel > 0 [L860] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L536] RET timeShift() [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND FALSE !(\read(tmp)) [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___2)) [L525] tmp___1 = __VERIFIER_nondet_int() [L527] COND FALSE !(\read(tmp___1)) [L536] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L859] COND TRUE waterLevel > 0 [L860] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND TRUE tmp == 0 [L53] CALL, EXPR isPumpRunning() [L661] int retValue_acc ; [L664] retValue_acc = pumpRunning [L665] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L752] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 232 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 42.1s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 34.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1356 SDtfs, 3146 SDslu, 1750 SDs, 0 SdLazy, 8579 SolverSat, 2306 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 475 GetRequests, 314 SyntacticMatches, 6 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 14.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1217occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 1059 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 1067 NumberOfCodeBlocks, 1067 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 891 ConstructedInterpolants, 0 QuantifiedInterpolants, 329447 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 152/172 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...