/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 13:11:05,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:11:05,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:11:05,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:11:05,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:11:05,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:11:05,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:11:05,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:11:05,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:11:06,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:11:06,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:11:06,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:11:06,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:11:06,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:11:06,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:11:06,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:11:06,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:11:06,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:11:06,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:11:06,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:11:06,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:11:06,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:11:06,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:11:06,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:11:06,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:11:06,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:11:06,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:11:06,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:11:06,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:11:06,020 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 13:11:06,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 13:11:06,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 13:11:06,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 13:11:06,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 13:11:06,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 13:11:06,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 13:11:06,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 13:11:06,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 13:11:06,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:11:06,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:11:06,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:11:06,028 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 [2020-08-21 13:11:06,073 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:11:06,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:11:06,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:11:06,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:11:06,076 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:11:06,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:11:06,077 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:11:06,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:11:06,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:11:06,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:11:06,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:11:06,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:11:06,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:11:06,078 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:11:06,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:11:06,079 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:11:06,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:11:06,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:11:06,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:11:06,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:11:06,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:11:06,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:11:06,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:11:06,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:11:06,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:11:06,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:11:06,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:11:06,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:11:06,084 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:11:06,084 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 -> false [2020-08-21 13:11:06,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:11:06,430 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:11:06,433 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:11:06,435 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:11:06,435 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:11:06,436 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product38.cil.c [2020-08-21 13:11:06,500 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c31983ef/50dffb49d1784855aa99cd37666258a1/FLAG2409f3699 [2020-08-21 13:11:07,018 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:11:07,019 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product38.cil.c [2020-08-21 13:11:07,034 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c31983ef/50dffb49d1784855aa99cd37666258a1/FLAG2409f3699 [2020-08-21 13:11:07,364 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c31983ef/50dffb49d1784855aa99cd37666258a1 [2020-08-21 13:11:07,373 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:11:07,375 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:11:07,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:11:07,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:11:07,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:11:07,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:11:07" (1/1) ... [2020-08-21 13:11:07,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc0e258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:07, skipping insertion in model container [2020-08-21 13:11:07,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:11:07" (1/1) ... [2020-08-21 13:11:07,393 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:11:07,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:11:07,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:11:07,908 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:11:08,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:11:08,055 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:11:08,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:08 WrapperNode [2020-08-21 13:11:08,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:11:08,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:11:08,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:11:08,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:11:08,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:08" (1/1) ... [2020-08-21 13:11:08,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:08" (1/1) ... [2020-08-21 13:11:08,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:08" (1/1) ... [2020-08-21 13:11:08,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:08" (1/1) ... [2020-08-21 13:11:08,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:08" (1/1) ... [2020-08-21 13:11:08,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:08" (1/1) ... [2020-08-21 13:11:08,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:08" (1/1) ... [2020-08-21 13:11:08,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:11:08,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:11:08,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:11:08,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:11:08,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:08" (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 [2020-08-21 13:11:08,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:11:08,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:11:08,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 13:11:08,216 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 13:11:08,216 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 13:11:08,216 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 13:11:08,216 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 13:11:08,216 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:11:08,216 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 13:11:08,217 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 13:11:08,217 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 13:11:08,217 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 13:11:08,217 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 13:11:08,217 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 13:11:08,217 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 13:11:08,217 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 13:11:08,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 13:11:08,218 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 13:11:08,218 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 13:11:08,218 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 13:11:08,218 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 13:11:08,218 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 13:11:08,219 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 13:11:08,219 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 13:11:08,219 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 13:11:08,219 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 13:11:08,219 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 13:11:08,219 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 13:11:08,220 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 13:11:08,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 13:11:08,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 13:11:08,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 13:11:08,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 13:11:08,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 13:11:08,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 13:11:08,221 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 13:11:08,221 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 13:11:08,221 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 13:11:08,221 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 13:11:08,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:11:08,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 13:11:08,222 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 13:11:08,222 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 13:11:08,222 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 13:11:08,222 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 13:11:08,222 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 13:11:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 13:11:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 13:11:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 13:11:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 13:11:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 13:11:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 13:11:08,224 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 13:11:08,224 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 13:11:08,224 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:11:08,224 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 13:11:08,224 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 13:11:08,224 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 13:11:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 13:11:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 13:11:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 13:11:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 13:11:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 13:11:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 13:11:08,227 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 13:11:08,227 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 13:11:08,227 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 13:11:08,227 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 13:11:08,227 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 13:11:08,227 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 13:11:08,227 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 13:11:08,227 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 13:11:08,228 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 13:11:08,228 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 13:11:08,228 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 13:11:08,228 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 13:11:08,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 13:11:08,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 13:11:08,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 13:11:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 13:11:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 13:11:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:11:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 13:11:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 13:11:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 13:11:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 13:11:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 13:11:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 13:11:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 13:11:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:11:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 13:11:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:11:09,295 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:11:09,296 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 13:11:09,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:11:09 BoogieIcfgContainer [2020-08-21 13:11:09,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:11:09,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:11:09,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:11:09,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:11:09,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:11:07" (1/3) ... [2020-08-21 13:11:09,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3beff43b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:11:09, skipping insertion in model container [2020-08-21 13:11:09,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:08" (2/3) ... [2020-08-21 13:11:09,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3beff43b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:11:09, skipping insertion in model container [2020-08-21 13:11:09,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:11:09" (3/3) ... [2020-08-21 13:11:09,310 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product38.cil.c [2020-08-21 13:11:09,321 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:11:09,330 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:11:09,344 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:11:09,369 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:11:09,369 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:11:09,369 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:11:09,369 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:11:09,370 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:11:09,370 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:11:09,370 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:11:09,370 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:11:09,391 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states. [2020-08-21 13:11:09,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 13:11:09,401 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:11:09,402 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] [2020-08-21 13:11:09,403 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:11:09,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:11:09,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1463974042, now seen corresponding path program 1 times [2020-08-21 13:11:09,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:11:09,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942983175] [2020-08-21 13:11:09,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:11:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:10,062 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:11:10,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:11:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:10,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:11:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:10,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:11:10,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:10,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:11:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:10,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:11:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:10,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:11:10,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:10,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:11:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:10,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:11:10,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942983175] [2020-08-21 13:11:10,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:11:10,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 13:11:10,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331880874] [2020-08-21 13:11:10,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 13:11:10,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:11:10,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 13:11:10,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 13:11:10,235 INFO L87 Difference]: Start difference. First operand 173 states. Second operand 3 states. [2020-08-21 13:11:11,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:11:11,377 INFO L93 Difference]: Finished difference Result 302 states and 392 transitions. [2020-08-21 13:11:11,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 13:11:11,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 13:11:11,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:11:11,394 INFO L225 Difference]: With dead ends: 302 [2020-08-21 13:11:11,394 INFO L226 Difference]: Without dead ends: 163 [2020-08-21 13:11:11,399 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 [2020-08-21 13:11:11,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-08-21 13:11:11,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 130. [2020-08-21 13:11:11,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-21 13:11:11,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2020-08-21 13:11:11,485 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 46 [2020-08-21 13:11:11,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:11:11,486 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2020-08-21 13:11:11,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 13:11:11,486 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2020-08-21 13:11:11,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 13:11:11,490 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:11:11,490 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] [2020-08-21 13:11:11,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:11:11,491 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:11:11,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:11:11,491 INFO L82 PathProgramCache]: Analyzing trace with hash 842471544, now seen corresponding path program 1 times [2020-08-21 13:11:11,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:11:11,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079525324] [2020-08-21 13:11:11,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:11:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:11,814 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:11:11,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:11:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:11,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:11:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:11,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:11:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:11,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:11:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:11,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:11:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:11,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 13:11:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:11,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 13:11:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:11,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:11:11,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079525324] [2020-08-21 13:11:11,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:11:11,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:11:11,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376236206] [2020-08-21 13:11:11,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:11:11,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:11:11,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:11:11,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:11:11,857 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand 4 states. [2020-08-21 13:11:12,263 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:13,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:11:13,138 INFO L93 Difference]: Finished difference Result 231 states and 279 transitions. [2020-08-21 13:11:13,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 13:11:13,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 13:11:13,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:11:13,144 INFO L225 Difference]: With dead ends: 231 [2020-08-21 13:11:13,144 INFO L226 Difference]: Without dead ends: 147 [2020-08-21 13:11:13,146 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 [2020-08-21 13:11:13,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-08-21 13:11:13,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 121. [2020-08-21 13:11:13,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-08-21 13:11:13,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 139 transitions. [2020-08-21 13:11:13,185 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 139 transitions. Word has length 47 [2020-08-21 13:11:13,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:11:13,185 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 139 transitions. [2020-08-21 13:11:13,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:11:13,186 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 139 transitions. [2020-08-21 13:11:13,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 13:11:13,188 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:11:13,188 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] [2020-08-21 13:11:13,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:11:13,189 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:11:13,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:11:13,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1913748360, now seen corresponding path program 1 times [2020-08-21 13:11:13,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:11:13,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126577687] [2020-08-21 13:11:13,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:11:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:13,525 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:11:13,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:11:13,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:13,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:11:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:13,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:11:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:13,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:11:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:13,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:11:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:13,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:11:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:13,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:11:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:13,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:11:13,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126577687] [2020-08-21 13:11:13,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:11:13,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 13:11:13,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72989808] [2020-08-21 13:11:13,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:11:13,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:11:13,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:11:13,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:11:13,618 INFO L87 Difference]: Start difference. First operand 121 states and 139 transitions. Second operand 8 states. [2020-08-21 13:11:13,954 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:11:14,247 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:14,509 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:14,729 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:15,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:11:15,840 INFO L93 Difference]: Finished difference Result 244 states and 297 transitions. [2020-08-21 13:11:15,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 13:11:15,841 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-21 13:11:15,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:11:15,843 INFO L225 Difference]: With dead ends: 244 [2020-08-21 13:11:15,844 INFO L226 Difference]: Without dead ends: 147 [2020-08-21 13:11:15,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:11:15,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-08-21 13:11:15,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 121. [2020-08-21 13:11:15,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-08-21 13:11:15,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 138 transitions. [2020-08-21 13:11:15,878 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 138 transitions. Word has length 52 [2020-08-21 13:11:15,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:11:15,879 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 138 transitions. [2020-08-21 13:11:15,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 13:11:15,879 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 138 transitions. [2020-08-21 13:11:15,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 13:11:15,881 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:11:15,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:11:15,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 13:11:15,882 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:11:15,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:11:15,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1607213040, now seen corresponding path program 1 times [2020-08-21 13:11:15,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:11:15,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726485253] [2020-08-21 13:11:15,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:11:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:16,147 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:11:16,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:11:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:16,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:11:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:16,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:11:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:16,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:11:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:16,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:11:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:16,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 13:11:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:16,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:16,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:16,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 13:11:16,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:16,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 13:11:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:16,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:11:16,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726485253] [2020-08-21 13:11:16,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:11:16,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 13:11:16,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136021555] [2020-08-21 13:11:16,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 13:11:16,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:11:16,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 13:11:16,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 13:11:16,275 INFO L87 Difference]: Start difference. First operand 121 states and 138 transitions. Second operand 6 states. [2020-08-21 13:11:16,616 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:11:17,724 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:18,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:11:18,361 INFO L93 Difference]: Finished difference Result 341 states and 419 transitions. [2020-08-21 13:11:18,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 13:11:18,362 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-21 13:11:18,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:11:18,365 INFO L225 Difference]: With dead ends: 341 [2020-08-21 13:11:18,365 INFO L226 Difference]: Without dead ends: 244 [2020-08-21 13:11:18,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 13:11:18,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-08-21 13:11:18,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 201. [2020-08-21 13:11:18,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-08-21 13:11:18,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 227 transitions. [2020-08-21 13:11:18,455 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 227 transitions. Word has length 65 [2020-08-21 13:11:18,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:11:18,456 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 227 transitions. [2020-08-21 13:11:18,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 13:11:18,456 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 227 transitions. [2020-08-21 13:11:18,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 13:11:18,457 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:11:18,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:11:18,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 13:11:18,458 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:11:18,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:11:18,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1567646189, now seen corresponding path program 1 times [2020-08-21 13:11:18,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:11:18,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882550277] [2020-08-21 13:11:18,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:11:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:18,775 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:11:18,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:11:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:18,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:11:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:18,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:11:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:18,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:11:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:18,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:11:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:18,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 13:11:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:18,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:18,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:18,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:18,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:11:18,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:18,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 13:11:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:18,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 13:11:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:18,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:11:18,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882550277] [2020-08-21 13:11:18,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:11:18,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 13:11:18,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088462529] [2020-08-21 13:11:18,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 13:11:18,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:11:18,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 13:11:18,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:11:18,979 INFO L87 Difference]: Start difference. First operand 201 states and 227 transitions. Second operand 12 states. [2020-08-21 13:11:19,387 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:11:19,685 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:19,929 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:20,159 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:20,671 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:21,561 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:21,866 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:11:22,094 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:11:22,316 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:11:22,564 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:11:22,835 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:11:24,001 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:11:24,327 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:24,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:11:24,866 INFO L93 Difference]: Finished difference Result 707 states and 910 transitions. [2020-08-21 13:11:24,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 13:11:24,867 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-08-21 13:11:24,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:11:24,872 INFO L225 Difference]: With dead ends: 707 [2020-08-21 13:11:24,873 INFO L226 Difference]: Without dead ends: 530 [2020-08-21 13:11:24,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-21 13:11:24,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2020-08-21 13:11:25,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 468. [2020-08-21 13:11:25,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-08-21 13:11:25,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 547 transitions. [2020-08-21 13:11:25,012 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 547 transitions. Word has length 79 [2020-08-21 13:11:25,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:11:25,013 INFO L479 AbstractCegarLoop]: Abstraction has 468 states and 547 transitions. [2020-08-21 13:11:25,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 13:11:25,013 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 547 transitions. [2020-08-21 13:11:25,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-21 13:11:25,017 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:11:25,017 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:11:25,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 13:11:25,018 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:11:25,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:11:25,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1919635093, now seen corresponding path program 1 times [2020-08-21 13:11:25,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:11:25,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748596445] [2020-08-21 13:11:25,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:11:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:25,285 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:11:25,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:11:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:25,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:11:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:25,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:11:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:25,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:11:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:25,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:11:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:25,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 13:11:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:25,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:11:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:25,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:25,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:25,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:25,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:25,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:11:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:25,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:11:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:25,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:25,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 13:11:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:25,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 13:11:25,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:25,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 13:11:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:25,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:25,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:25,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:25,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:11:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:25,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 13:11:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:25,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-21 13:11:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:25,560 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-21 13:11:25,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748596445] [2020-08-21 13:11:25,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:11:25,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 13:11:25,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650406090] [2020-08-21 13:11:25,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 13:11:25,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:11:25,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 13:11:25,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 13:11:25,563 INFO L87 Difference]: Start difference. First operand 468 states and 547 transitions. Second operand 13 states. [2020-08-21 13:11:25,965 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:11:26,566 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:11:27,164 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:11:27,410 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 13:11:27,674 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:11:27,925 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:11:28,180 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:11:28,466 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 13:11:28,760 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:11:29,032 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:11:30,701 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:30,932 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:11:31,159 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:31,395 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:31,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:11:31,954 INFO L93 Difference]: Finished difference Result 951 states and 1203 transitions. [2020-08-21 13:11:31,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-21 13:11:31,954 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 136 [2020-08-21 13:11:31,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:11:31,960 INFO L225 Difference]: With dead ends: 951 [2020-08-21 13:11:31,960 INFO L226 Difference]: Without dead ends: 507 [2020-08-21 13:11:31,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-21 13:11:31,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-08-21 13:11:32,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 440. [2020-08-21 13:11:32,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2020-08-21 13:11:32,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 518 transitions. [2020-08-21 13:11:32,077 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 518 transitions. Word has length 136 [2020-08-21 13:11:32,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:11:32,078 INFO L479 AbstractCegarLoop]: Abstraction has 440 states and 518 transitions. [2020-08-21 13:11:32,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 13:11:32,079 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 518 transitions. [2020-08-21 13:11:32,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-21 13:11:32,083 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:11:32,084 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:11:32,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 13:11:32,084 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:11:32,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:11:32,085 INFO L82 PathProgramCache]: Analyzing trace with hash 529869601, now seen corresponding path program 1 times [2020-08-21 13:11:32,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:11:32,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552542834] [2020-08-21 13:11:32,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:11:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,442 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:11:32,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:11:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:11:32,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:11:32,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:11:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:11:32,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 13:11:32,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:11:32,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:11:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:32,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 13:11:32,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 13:11:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:11:32,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 13:11:32,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 13:11:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:32,624 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 13:11:32,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552542834] [2020-08-21 13:11:32,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:11:32,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 13:11:32,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926042870] [2020-08-21 13:11:32,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 13:11:32,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:11:32,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 13:11:32,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:11:32,627 INFO L87 Difference]: Start difference. First operand 440 states and 518 transitions. Second operand 12 states. [2020-08-21 13:11:33,108 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:33,349 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:33,588 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:34,171 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:34,430 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:34,668 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:35,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:11:35,598 INFO L93 Difference]: Finished difference Result 803 states and 979 transitions. [2020-08-21 13:11:35,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 13:11:35,600 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-08-21 13:11:35,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:11:35,604 INFO L225 Difference]: With dead ends: 803 [2020-08-21 13:11:35,604 INFO L226 Difference]: Without dead ends: 387 [2020-08-21 13:11:35,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 13:11:35,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-08-21 13:11:35,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 361. [2020-08-21 13:11:35,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-08-21 13:11:35,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 422 transitions. [2020-08-21 13:11:35,707 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 422 transitions. Word has length 128 [2020-08-21 13:11:35,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:11:35,708 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 422 transitions. [2020-08-21 13:11:35,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 13:11:35,709 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 422 transitions. [2020-08-21 13:11:35,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-21 13:11:35,714 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:11:35,714 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:11:35,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 13:11:35,715 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:11:35,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:11:35,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1312911802, now seen corresponding path program 1 times [2020-08-21 13:11:35,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:11:35,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203975556] [2020-08-21 13:11:35,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:11:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:36,008 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:11:36,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:11:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:36,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:11:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:36,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:11:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:36,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:11:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:36,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:11:36,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:36,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 13:11:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:36,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:11:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:36,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:36,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:36,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:36,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:36,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:11:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:36,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:11:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:36,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:36,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 13:11:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:36,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-21 13:11:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:36,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:36,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:36,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:11:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:36,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-21 13:11:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:36,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-21 13:11:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:36,254 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 13:11:36,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203975556] [2020-08-21 13:11:36,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:11:36,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 13:11:36,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508657350] [2020-08-21 13:11:36,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 13:11:36,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:11:36,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 13:11:36,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 13:11:36,257 INFO L87 Difference]: Start difference. First operand 361 states and 422 transitions. Second operand 13 states. [2020-08-21 13:11:36,701 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:11:37,417 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:39,304 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:39,586 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:39,837 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:40,082 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:11:40,353 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:40,604 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:11:40,861 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:41,118 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:11:41,408 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:11:41,649 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:11:42,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:11:42,293 INFO L93 Difference]: Finished difference Result 1017 states and 1234 transitions. [2020-08-21 13:11:42,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-21 13:11:42,294 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 132 [2020-08-21 13:11:42,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:11:42,302 INFO L225 Difference]: With dead ends: 1017 [2020-08-21 13:11:42,303 INFO L226 Difference]: Without dead ends: 680 [2020-08-21 13:11:42,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=207, Invalid=785, Unknown=0, NotChecked=0, Total=992 [2020-08-21 13:11:42,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2020-08-21 13:11:42,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 638. [2020-08-21 13:11:42,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 638 states. [2020-08-21 13:11:42,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 736 transitions. [2020-08-21 13:11:42,473 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 736 transitions. Word has length 132 [2020-08-21 13:11:42,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:11:42,474 INFO L479 AbstractCegarLoop]: Abstraction has 638 states and 736 transitions. [2020-08-21 13:11:42,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 13:11:42,474 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 736 transitions. [2020-08-21 13:11:42,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-21 13:11:42,477 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:11:42,477 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:11:42,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 13:11:42,478 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:11:42,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:11:42,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1866114282, now seen corresponding path program 1 times [2020-08-21 13:11:42,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:11:42,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401318673] [2020-08-21 13:11:42,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:11:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:42,773 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:11:42,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:11:42,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:42,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:11:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:42,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:11:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:42,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:11:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:42,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:11:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:42,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 13:11:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:42,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 13:11:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:42,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 13:11:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:42,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:42,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:42,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:42,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:42,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:42,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:11:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:42,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:11:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:42,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:42,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 13:11:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:42,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 13:11:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:42,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:42,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:42,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:11:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:42,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 13:11:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:42,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-21 13:11:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:42,925 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-21 13:11:42,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401318673] [2020-08-21 13:11:42,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:11:42,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 13:11:42,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112313458] [2020-08-21 13:11:42,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 13:11:42,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:11:42,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 13:11:42,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-21 13:11:42,932 INFO L87 Difference]: Start difference. First operand 638 states and 736 transitions. Second operand 11 states. [2020-08-21 13:11:43,295 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:11:45,098 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:45,326 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:11:45,606 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:45,862 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:46,092 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:46,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:11:46,596 INFO L93 Difference]: Finished difference Result 764 states and 950 transitions. [2020-08-21 13:11:46,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 13:11:46,597 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 136 [2020-08-21 13:11:46,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:11:46,603 INFO L225 Difference]: With dead ends: 764 [2020-08-21 13:11:46,604 INFO L226 Difference]: Without dead ends: 761 [2020-08-21 13:11:46,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2020-08-21 13:11:46,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2020-08-21 13:11:46,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 638. [2020-08-21 13:11:46,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 638 states. [2020-08-21 13:11:46,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 734 transitions. [2020-08-21 13:11:46,728 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 734 transitions. Word has length 136 [2020-08-21 13:11:46,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:11:46,728 INFO L479 AbstractCegarLoop]: Abstraction has 638 states and 734 transitions. [2020-08-21 13:11:46,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 13:11:46,729 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 734 transitions. [2020-08-21 13:11:46,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-21 13:11:46,731 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:11:46,731 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:11:46,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 13:11:46,732 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:11:46,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:11:46,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1647665506, now seen corresponding path program 1 times [2020-08-21 13:11:46,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:11:46,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601231618] [2020-08-21 13:11:46,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:11:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:47,089 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:11:47,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:11:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:47,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:11:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:47,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:11:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:47,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:11:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:47,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:11:47,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:47,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 13:11:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:47,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:11:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:47,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:47,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:47,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:47,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:47,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:47,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:11:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:47,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:11:47,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:47,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:47,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:47,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 13:11:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:47,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-21 13:11:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:47,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:47,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:47,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:47,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:11:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:47,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:47,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:47,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 13:11:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:47,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-21 13:11:47,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:47,355 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-21 13:11:47,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601231618] [2020-08-21 13:11:47,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:11:47,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 13:11:47,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092340428] [2020-08-21 13:11:47,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 13:11:47,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:11:47,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 13:11:47,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:11:47,360 INFO L87 Difference]: Start difference. First operand 638 states and 734 transitions. Second operand 12 states. [2020-08-21 13:11:48,169 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:48,999 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:11:49,536 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:11:49,797 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:11:50,028 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:11:50,256 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:50,518 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:11:50,759 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:11:52,278 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:11:52,515 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:53,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:11:53,092 INFO L93 Difference]: Finished difference Result 1512 states and 1864 transitions. [2020-08-21 13:11:53,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-21 13:11:53,093 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 136 [2020-08-21 13:11:53,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:11:53,099 INFO L225 Difference]: With dead ends: 1512 [2020-08-21 13:11:53,100 INFO L226 Difference]: Without dead ends: 1024 [2020-08-21 13:11:53,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-21 13:11:53,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-08-21 13:11:53,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 867. [2020-08-21 13:11:53,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2020-08-21 13:11:53,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1012 transitions. [2020-08-21 13:11:53,259 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1012 transitions. Word has length 136 [2020-08-21 13:11:53,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:11:53,259 INFO L479 AbstractCegarLoop]: Abstraction has 867 states and 1012 transitions. [2020-08-21 13:11:53,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 13:11:53,260 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1012 transitions. [2020-08-21 13:11:53,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-21 13:11:53,264 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:11:53,264 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 13:11:53,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 13:11:53,265 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:11:53,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:11:53,265 INFO L82 PathProgramCache]: Analyzing trace with hash -960638147, now seen corresponding path program 2 times [2020-08-21 13:11:53,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:11:53,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33652947] [2020-08-21 13:11:53,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:11:53,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,588 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:11:53,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:11:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:11:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:11:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:11:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:11:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 13:11:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:11:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:11:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:11:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 13:11:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:11:53,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:11:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:11:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 13:11:53,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-21 13:11:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-08-21 13:11:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:11:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-21 13:11:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 13:11:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:53,849 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 39 proven. 22 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-08-21 13:11:53,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33652947] [2020-08-21 13:11:53,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:11:53,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 13:11:53,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371396340] [2020-08-21 13:11:53,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 13:11:53,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:11:53,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 13:11:53,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-21 13:11:53,851 INFO L87 Difference]: Start difference. First operand 867 states and 1012 transitions. Second operand 14 states. [2020-08-21 13:11:54,267 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:11:54,866 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:11:55,788 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:56,063 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:11:56,303 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:11:56,535 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:56,794 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:11:57,056 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:11:58,273 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:11:58,516 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:59,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:11:59,400 INFO L93 Difference]: Finished difference Result 2101 states and 2694 transitions. [2020-08-21 13:11:59,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-21 13:11:59,401 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 192 [2020-08-21 13:11:59,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:11:59,422 INFO L225 Difference]: With dead ends: 2101 [2020-08-21 13:11:59,422 INFO L226 Difference]: Without dead ends: 1384 [2020-08-21 13:11:59,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2020-08-21 13:11:59,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2020-08-21 13:11:59,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 865. [2020-08-21 13:11:59,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 865 states. [2020-08-21 13:11:59,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1010 transitions. [2020-08-21 13:11:59,637 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1010 transitions. Word has length 192 [2020-08-21 13:11:59,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:11:59,638 INFO L479 AbstractCegarLoop]: Abstraction has 865 states and 1010 transitions. [2020-08-21 13:11:59,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 13:11:59,638 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1010 transitions. [2020-08-21 13:11:59,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-08-21 13:11:59,642 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:11:59,642 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:11:59,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 13:11:59,642 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:11:59,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:11:59,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1788025149, now seen corresponding path program 3 times [2020-08-21 13:11:59,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:11:59,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689738160] [2020-08-21 13:11:59,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:11:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 13:11:59,719 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 13:11:59,719 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 13:11:59,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 13:11:59,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 01:11:59 BoogieIcfgContainer [2020-08-21 13:11:59,793 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 13:11:59,795 INFO L168 Benchmark]: Toolchain (without parser) took 52420.26 ms. Allocated memory was 140.5 MB in the beginning and 741.3 MB in the end (delta: 600.8 MB). Free memory was 102.6 MB in the beginning and 133.8 MB in the end (delta: -31.2 MB). Peak memory consumption was 569.6 MB. Max. memory is 7.1 GB. [2020-08-21 13:11:59,798 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 13:11:59,800 INFO L168 Benchmark]: CACSL2BoogieTranslator took 680.11 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 102.4 MB in the beginning and 171.2 MB in the end (delta: -68.8 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-08-21 13:11:59,803 INFO L168 Benchmark]: Boogie Preprocessor took 89.88 ms. Allocated memory is still 202.9 MB. Free memory was 171.2 MB in the beginning and 166.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-08-21 13:11:59,804 INFO L168 Benchmark]: RCFGBuilder took 1154.67 ms. Allocated memory was 202.9 MB in the beginning and 237.0 MB in the end (delta: 34.1 MB). Free memory was 166.5 MB in the beginning and 196.2 MB in the end (delta: -29.7 MB). Peak memory consumption was 81.0 MB. Max. memory is 7.1 GB. [2020-08-21 13:11:59,805 INFO L168 Benchmark]: TraceAbstraction took 50490.51 ms. Allocated memory was 237.0 MB in the beginning and 741.3 MB in the end (delta: 504.4 MB). Free memory was 196.2 MB in the beginning and 133.8 MB in the end (delta: 62.4 MB). Peak memory consumption was 566.8 MB. Max. memory is 7.1 GB. [2020-08-21 13:11:59,814 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 680.11 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 102.4 MB in the beginning and 171.2 MB in the end (delta: -68.8 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.88 ms. Allocated memory is still 202.9 MB. Free memory was 171.2 MB in the beginning and 166.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1154.67 ms. Allocated memory was 202.9 MB in the beginning and 237.0 MB in the end (delta: 34.1 MB). Free memory was 166.5 MB in the beginning and 196.2 MB in the end (delta: -29.7 MB). Peak memory consumption was 81.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 50490.51 ms. Allocated memory was 237.0 MB in the beginning and 741.3 MB in the end (delta: 504.4 MB). Free memory was 196.2 MB in the beginning and 133.8 MB in the end (delta: 62.4 MB). Peak memory consumption was 566.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 247]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L149] int waterLevel = 1; [L150] int methaneLevelCritical = 0; [L349] int pumpRunning = 0; [L350] int systemActive = 1; [L704] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L927] int retValue_acc ; [L930] retValue_acc = 1 [L931] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L281] int splverifierCounter ; [L282] int tmp ; [L283] int tmp___0 ; [L284] int tmp___1 ; [L285] int tmp___2 ; [L288] splverifierCounter = 0 [L290] COND TRUE 1 [L292] COND TRUE splverifierCounter < 4 [L298] tmp = __VERIFIER_nondet_int() [L300] COND TRUE \read(tmp) [L302] CALL waterRise() [L167] COND TRUE waterLevel < 2 [L168] waterLevel = waterLevel + 1 [L302] RET waterRise() [L308] tmp___0 = __VERIFIER_nondet_int() [L310] COND FALSE !(\read(tmp___0)) [L318] tmp___2 = __VERIFIER_nondet_int() [L320] COND FALSE !(\read(tmp___2)) [L326] tmp___1 = __VERIFIER_nondet_int() [L328] COND TRUE \read(tmp___1) [L335] CALL timeShift() [L356] COND FALSE !(\read(pumpRunning)) [L363] COND TRUE \read(systemActive) [L365] CALL processEnvironment() [L411] int tmp ; [L414] COND FALSE !(\read(pumpRunning)) [L429] CALL processEnvironment__wrappee__highWaterSensor() [L385] int tmp ; [L388] COND TRUE ! pumpRunning [L390] CALL, EXPR isHighWaterLevel() [L508] int retValue_acc ; [L509] int tmp ; [L510] int tmp___0 ; [L514] CALL, EXPR isHighWaterSensorDry() [L229] int retValue_acc ; [L232] COND FALSE !(waterLevel < 2) [L236] retValue_acc = 0 [L237] return (retValue_acc); [L514] RET, EXPR isHighWaterSensorDry() [L514] tmp = isHighWaterSensorDry() [L516] COND FALSE !(\read(tmp)) [L519] tmp___0 = 1 [L521] retValue_acc = tmp___0 [L522] return (retValue_acc); [L390] RET, EXPR isHighWaterLevel() [L390] tmp = isHighWaterLevel() [L392] COND TRUE \read(tmp) [L394] CALL activatePump() [L439] pumpRunning = 1 [L394] RET activatePump() [L429] RET processEnvironment__wrappee__highWaterSensor() [L365] RET processEnvironment() [L371] CALL __utac_acc__Specification4_spec__1() [L254] int tmp ; [L255] int tmp___0 ; [L259] CALL, EXPR getWaterLevel() [L220] int retValue_acc ; [L223] retValue_acc = waterLevel [L224] return (retValue_acc); [L259] RET, EXPR getWaterLevel() [L259] tmp = getWaterLevel() [L261] COND FALSE !(tmp == 0) [L371] RET __utac_acc__Specification4_spec__1() [L335] RET timeShift() [L290] COND TRUE 1 [L292] COND TRUE splverifierCounter < 4 [L298] tmp = __VERIFIER_nondet_int() [L300] COND FALSE !(\read(tmp)) [L308] tmp___0 = __VERIFIER_nondet_int() [L310] COND FALSE !(\read(tmp___0)) [L318] tmp___2 = __VERIFIER_nondet_int() [L320] COND FALSE !(\read(tmp___2)) [L326] tmp___1 = __VERIFIER_nondet_int() [L328] COND TRUE \read(tmp___1) [L335] CALL timeShift() [L356] COND TRUE \read(pumpRunning) [L358] CALL lowerWaterLevel() [L155] COND TRUE waterLevel > 0 [L156] waterLevel = waterLevel - 1 [L358] RET lowerWaterLevel() [L363] COND TRUE \read(systemActive) [L365] CALL processEnvironment() [L411] int tmp ; [L414] COND TRUE \read(pumpRunning) [L416] CALL, EXPR isMethaneAlarm() [L452] int retValue_acc ; [L456] CALL, EXPR isMethaneLevelCritical() [L188] int retValue_acc ; [L191] retValue_acc = methaneLevelCritical [L192] return (retValue_acc); [L456] RET, EXPR isMethaneLevelCritical() [L456] retValue_acc = isMethaneLevelCritical() [L458] return (retValue_acc); [L416] RET, EXPR isMethaneAlarm() [L416] tmp = isMethaneAlarm() [L418] COND FALSE !(\read(tmp)) [L424] CALL processEnvironment__wrappee__highWaterSensor() [L385] int tmp ; [L388] COND FALSE !(! pumpRunning) [L403] FCALL processEnvironment__wrappee__base() [L424] RET processEnvironment__wrappee__highWaterSensor() [L365] RET processEnvironment() [L371] CALL __utac_acc__Specification4_spec__1() [L254] int tmp ; [L255] int tmp___0 ; [L259] CALL, EXPR getWaterLevel() [L220] int retValue_acc ; [L223] retValue_acc = waterLevel [L224] return (retValue_acc); [L259] RET, EXPR getWaterLevel() [L259] tmp = getWaterLevel() [L261] COND FALSE !(tmp == 0) [L371] RET __utac_acc__Specification4_spec__1() [L335] RET timeShift() [L290] COND TRUE 1 [L292] COND TRUE splverifierCounter < 4 [L298] tmp = __VERIFIER_nondet_int() [L300] COND FALSE !(\read(tmp)) [L308] tmp___0 = __VERIFIER_nondet_int() [L310] COND FALSE !(\read(tmp___0)) [L318] tmp___2 = __VERIFIER_nondet_int() [L320] COND FALSE !(\read(tmp___2)) [L326] tmp___1 = __VERIFIER_nondet_int() [L328] COND TRUE \read(tmp___1) [L335] CALL timeShift() [L356] COND TRUE \read(pumpRunning) [L358] CALL lowerWaterLevel() [L155] COND TRUE waterLevel > 0 [L156] waterLevel = waterLevel - 1 [L358] RET lowerWaterLevel() [L363] COND TRUE \read(systemActive) [L365] CALL processEnvironment() [L411] int tmp ; [L414] COND TRUE \read(pumpRunning) [L416] CALL, EXPR isMethaneAlarm() [L452] int retValue_acc ; [L456] CALL, EXPR isMethaneLevelCritical() [L188] int retValue_acc ; [L191] retValue_acc = methaneLevelCritical [L192] return (retValue_acc); [L456] RET, EXPR isMethaneLevelCritical() [L456] retValue_acc = isMethaneLevelCritical() [L458] return (retValue_acc); [L416] RET, EXPR isMethaneAlarm() [L416] tmp = isMethaneAlarm() [L418] COND FALSE !(\read(tmp)) [L424] CALL processEnvironment__wrappee__highWaterSensor() [L385] int tmp ; [L388] COND FALSE !(! pumpRunning) [L403] FCALL processEnvironment__wrappee__base() [L424] RET processEnvironment__wrappee__highWaterSensor() [L365] RET processEnvironment() [L371] CALL __utac_acc__Specification4_spec__1() [L254] int tmp ; [L255] int tmp___0 ; [L259] CALL, EXPR getWaterLevel() [L220] int retValue_acc ; [L223] retValue_acc = waterLevel [L224] return (retValue_acc); [L259] RET, EXPR getWaterLevel() [L259] tmp = getWaterLevel() [L261] COND TRUE tmp == 0 [L263] CALL, EXPR isPumpRunning() [L463] int retValue_acc ; [L466] retValue_acc = pumpRunning [L467] return (retValue_acc); [L263] RET, EXPR isPumpRunning() [L263] tmp___0 = isPumpRunning() [L265] COND TRUE \read(tmp___0) [L267] CALL __automaton_fail() [L247] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 229 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 50.3s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 43.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1436 SDtfs, 3500 SDslu, 1972 SDs, 0 SdLazy, 10943 SolverSat, 2499 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 637 GetRequests, 413 SyntacticMatches, 12 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1143 ImplicationChecksByTransitivity, 21.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=867occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 1124 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 1337 NumberOfCodeBlocks, 1337 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1138 ConstructedInterpolants, 0 QuantifiedInterpolants, 455757 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 211/247 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...