/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:32:30,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:32:30,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:32:30,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:32:30,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:32:30,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:32:30,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:32:30,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:32:30,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:32:30,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:32:30,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:32:30,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:32:30,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:32:30,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:32:30,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:32:30,629 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:32:30,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:32:30,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:32:30,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:32:30,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:32:30,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:32:30,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:32:30,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:32:30,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:32:30,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:32:30,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:32:30,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:32:30,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:32:30,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:32:30,665 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 02:32:30,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 02:32:30,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 02:32:30,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 02:32:30,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 02:32:30,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 02:32:30,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 02:32:30,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 02:32:30,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 02:32:30,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:32:30,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:32:30,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:32:30,678 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 02:32:30,719 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:32:30,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:32:30,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:32:30,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:32:30,721 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:32:30,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:32:30,722 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:32:30,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:32:30,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:32:30,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:32:30,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:32:30,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:32:30,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:32:30,725 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:32:30,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:32:30,725 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:32:30,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:32:30,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:32:30,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:32:30,726 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:32:30,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:32:30,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:32:30,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:32:30,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:32:30,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:32:30,727 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:32:30,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:32:30,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:32:30,728 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:32:30,728 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:32:31,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:32:31,092 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:32:31,095 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:32:31,097 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:32:31,098 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:32:31,099 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product55.cil.c [2020-08-19 02:32:31,173 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0923b05f0/2643d3f1f28141b7bfcd46583f405cfd/FLAG460514b3f [2020-08-19 02:32:31,695 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:32:31,695 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product55.cil.c [2020-08-19 02:32:31,709 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0923b05f0/2643d3f1f28141b7bfcd46583f405cfd/FLAG460514b3f [2020-08-19 02:32:32,126 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0923b05f0/2643d3f1f28141b7bfcd46583f405cfd [2020-08-19 02:32:32,135 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:32:32,136 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:32:32,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:32:32,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:32:32,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:32:32,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:32:32" (1/1) ... [2020-08-19 02:32:32,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@156a129e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:32:32, skipping insertion in model container [2020-08-19 02:32:32,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:32:32" (1/1) ... [2020-08-19 02:32:32,153 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:32:32,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:32:32,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:32:32,665 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:32:32,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:32:32,797 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:32:32,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:32:32 WrapperNode [2020-08-19 02:32:32,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:32:32,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:32:32,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:32:32,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:32:32,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:32:32" (1/1) ... [2020-08-19 02:32:32,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:32:32" (1/1) ... [2020-08-19 02:32:32,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:32:32" (1/1) ... [2020-08-19 02:32:32,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:32:32" (1/1) ... [2020-08-19 02:32:32,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:32:32" (1/1) ... [2020-08-19 02:32:32,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:32:32" (1/1) ... [2020-08-19 02:32:32,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:32:32" (1/1) ... [2020-08-19 02:32:32,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:32:32,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:32:32,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:32:32,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:32:32,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:32:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:32:32,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:32:32,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:32:32,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 02:32:32,961 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 02:32:32,962 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 02:32:32,962 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 02:32:32,962 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 02:32:32,962 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 02:32:32,962 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 02:32:32,963 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 02:32:32,963 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 02:32:32,963 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 02:32:32,963 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 02:32:32,963 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 02:32:32,964 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 02:32:32,964 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 02:32:32,964 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 02:32:32,964 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 02:32:32,964 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 02:32:32,964 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 02:32:32,965 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 02:32:32,965 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 02:32:32,965 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 02:32:32,965 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 02:32:32,965 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 02:32:32,966 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 02:32:32,966 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 02:32:32,966 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 02:32:32,966 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 02:32:32,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 02:32:32,967 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 02:32:32,967 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 02:32:32,968 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 02:32:32,968 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 02:32:32,968 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:32:32,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-19 02:32:32,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 02:32:32,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 02:32:32,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 02:32:32,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 02:32:32,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 02:32:32,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 02:32:32,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:32:32,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:32:32,970 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 02:32:32,970 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 02:32:32,970 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 02:32:32,970 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 02:32:32,970 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 02:32:32,970 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 02:32:32,970 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 02:32:32,971 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 02:32:32,972 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 02:32:32,972 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 02:32:32,972 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 02:32:32,972 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 02:32:32,973 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 02:32:32,973 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 02:32:32,973 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 02:32:32,973 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 02:32:32,973 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 02:32:32,973 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 02:32:32,974 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 02:32:32,974 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 02:32:32,974 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-19 02:32:32,974 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 02:32:32,974 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 02:32:32,975 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 02:32:32,975 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 02:32:32,975 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 02:32:32,975 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 02:32:32,975 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 02:32:32,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:32:32,975 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 02:32:32,976 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 02:32:32,976 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 02:32:32,976 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 02:32:32,976 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 02:32:32,976 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:32:32,977 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 02:32:32,977 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 02:32:32,977 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 02:32:32,977 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 02:32:32,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 02:32:32,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 02:32:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:32:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 02:32:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 02:32:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:32:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 02:32:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 02:32:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:32:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 02:32:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 02:32:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 02:32:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:32:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 02:32:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:32:34,019 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:32:34,019 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 02:32:34,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:32:34 BoogieIcfgContainer [2020-08-19 02:32:34,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:32:34,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:32:34,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:32:34,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:32:34,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:32:32" (1/3) ... [2020-08-19 02:32:34,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341af51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:32:34, skipping insertion in model container [2020-08-19 02:32:34,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:32:32" (2/3) ... [2020-08-19 02:32:34,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341af51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:32:34, skipping insertion in model container [2020-08-19 02:32:34,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:32:34" (3/3) ... [2020-08-19 02:32:34,033 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product55.cil.c [2020-08-19 02:32:34,044 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:32:34,052 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:32:34,066 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:32:34,091 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:32:34,092 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:32:34,092 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:32:34,092 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:32:34,092 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:32:34,092 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:32:34,093 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:32:34,093 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:32:34,116 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2020-08-19 02:32:34,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 02:32:34,127 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:34,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:32:34,129 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:34,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:34,135 INFO L82 PathProgramCache]: Analyzing trace with hash 616057763, now seen corresponding path program 1 times [2020-08-19 02:32:34,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:34,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733141545] [2020-08-19 02:32:34,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:34,839 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:32:34,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:32:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:34,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:32:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:34,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:32:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:34,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:34,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:32:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:34,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:32:34,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:34,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:32:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:34,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:32:34,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733141545] [2020-08-19 02:32:34,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:32:34,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:32:34,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018561077] [2020-08-19 02:32:34,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:32:34,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:32:34,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:32:34,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:32:34,986 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 3 states. [2020-08-19 02:32:36,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:32:36,227 INFO L93 Difference]: Finished difference Result 343 states and 450 transitions. [2020-08-19 02:32:36,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:32:36,229 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 02:32:36,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:32:36,244 INFO L225 Difference]: With dead ends: 343 [2020-08-19 02:32:36,245 INFO L226 Difference]: Without dead ends: 185 [2020-08-19 02:32:36,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:32:36,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-08-19 02:32:36,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 149. [2020-08-19 02:32:36,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-08-19 02:32:36,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 178 transitions. [2020-08-19 02:32:36,380 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 178 transitions. Word has length 46 [2020-08-19 02:32:36,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:32:36,381 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 178 transitions. [2020-08-19 02:32:36,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:32:36,381 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 178 transitions. [2020-08-19 02:32:36,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 02:32:36,393 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:36,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:32:36,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:32:36,394 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:36,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:36,395 INFO L82 PathProgramCache]: Analyzing trace with hash -2016430514, now seen corresponding path program 1 times [2020-08-19 02:32:36,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:36,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014426316] [2020-08-19 02:32:36,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:36,775 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:32:36,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:32:36,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:36,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:32:36,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:36,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:32:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:36,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:36,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:32:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:36,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:32:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:36,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 02:32:36,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:36,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:32:36,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014426316] [2020-08-19 02:32:36,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:32:36,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 02:32:36,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956508667] [2020-08-19 02:32:36,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 02:32:36,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:32:36,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 02:32:36,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:32:36,870 INFO L87 Difference]: Start difference. First operand 149 states and 178 transitions. Second operand 4 states. [2020-08-19 02:32:37,358 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:38,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:32:38,421 INFO L93 Difference]: Finished difference Result 270 states and 333 transitions. [2020-08-19 02:32:38,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 02:32:38,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 02:32:38,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:32:38,426 INFO L225 Difference]: With dead ends: 270 [2020-08-19 02:32:38,427 INFO L226 Difference]: Without dead ends: 169 [2020-08-19 02:32:38,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:32:38,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-19 02:32:38,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 140. [2020-08-19 02:32:38,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-19 02:32:38,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 166 transitions. [2020-08-19 02:32:38,471 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 166 transitions. Word has length 47 [2020-08-19 02:32:38,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:32:38,472 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 166 transitions. [2020-08-19 02:32:38,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 02:32:38,472 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 166 transitions. [2020-08-19 02:32:38,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 02:32:38,474 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:38,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:32:38,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:32:38,474 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:38,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:38,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1603631393, now seen corresponding path program 1 times [2020-08-19 02:32:38,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:38,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817581056] [2020-08-19 02:32:38,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:38,827 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:32:38,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:32:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:38,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:32:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:38,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:32:38,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:38,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:38,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:38,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:32:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:38,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:32:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:38,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:32:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:38,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:32:38,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817581056] [2020-08-19 02:32:38,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:32:38,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 02:32:38,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768852104] [2020-08-19 02:32:38,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:32:38,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:32:38,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:32:38,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:32:38,979 INFO L87 Difference]: Start difference. First operand 140 states and 166 transitions. Second operand 8 states. [2020-08-19 02:32:39,334 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:32:39,633 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:39,888 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:40,103 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:40,853 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:42,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:32:42,950 INFO L93 Difference]: Finished difference Result 476 states and 596 transitions. [2020-08-19 02:32:42,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 02:32:42,957 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 02:32:42,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:32:42,962 INFO L225 Difference]: With dead ends: 476 [2020-08-19 02:32:42,962 INFO L226 Difference]: Without dead ends: 360 [2020-08-19 02:32:42,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-19 02:32:42,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-08-19 02:32:43,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 298. [2020-08-19 02:32:43,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-08-19 02:32:43,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 364 transitions. [2020-08-19 02:32:43,046 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 364 transitions. Word has length 51 [2020-08-19 02:32:43,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:32:43,046 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 364 transitions. [2020-08-19 02:32:43,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:32:43,047 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 364 transitions. [2020-08-19 02:32:43,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 02:32:43,049 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:43,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:32:43,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:32:43,049 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:43,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:43,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1180849517, now seen corresponding path program 1 times [2020-08-19 02:32:43,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:43,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978970605] [2020-08-19 02:32:43,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:43,355 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:32:43,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:32:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:43,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:32:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:43,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:32:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:43,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:43,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:32:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:43,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:32:43,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:43,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:32:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:43,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 02:32:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:43,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:32:43,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978970605] [2020-08-19 02:32:43,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:32:43,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 02:32:43,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791315300] [2020-08-19 02:32:43,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:32:43,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:32:43,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:32:43,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:32:43,462 INFO L87 Difference]: Start difference. First operand 298 states and 364 transitions. Second operand 8 states. [2020-08-19 02:32:43,853 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:32:44,691 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:45,141 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:32:45,447 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:45,754 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:46,371 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:47,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:32:47,443 INFO L93 Difference]: Finished difference Result 960 states and 1249 transitions. [2020-08-19 02:32:47,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 02:32:47,444 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-19 02:32:47,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:32:47,451 INFO L225 Difference]: With dead ends: 960 [2020-08-19 02:32:47,451 INFO L226 Difference]: Without dead ends: 686 [2020-08-19 02:32:47,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-19 02:32:47,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2020-08-19 02:32:47,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 551. [2020-08-19 02:32:47,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2020-08-19 02:32:47,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 678 transitions. [2020-08-19 02:32:47,582 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 678 transitions. Word has length 57 [2020-08-19 02:32:47,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:32:47,583 INFO L479 AbstractCegarLoop]: Abstraction has 551 states and 678 transitions. [2020-08-19 02:32:47,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:32:47,583 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 678 transitions. [2020-08-19 02:32:47,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 02:32:47,585 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:47,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:32:47,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:32:47,586 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:47,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:47,587 INFO L82 PathProgramCache]: Analyzing trace with hash -687352489, now seen corresponding path program 1 times [2020-08-19 02:32:47,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:47,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152042547] [2020-08-19 02:32:47,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:47,899 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:32:47,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:32:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:47,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:32:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:47,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:32:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:47,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:47,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:32:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:47,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:32:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:47,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:32:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:47,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 02:32:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:47,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 02:32:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:47,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:32:47,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152042547] [2020-08-19 02:32:48,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:32:48,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:32:48,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247815937] [2020-08-19 02:32:48,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:32:48,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:32:48,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:32:48,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:32:48,006 INFO L87 Difference]: Start difference. First operand 551 states and 678 transitions. Second operand 9 states. [2020-08-19 02:32:48,396 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:32:49,298 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:49,571 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:49,803 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:50,416 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:32:50,708 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:51,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:32:51,761 INFO L93 Difference]: Finished difference Result 1523 states and 2048 transitions. [2020-08-19 02:32:51,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 02:32:51,762 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-19 02:32:51,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:32:51,770 INFO L225 Difference]: With dead ends: 1523 [2020-08-19 02:32:51,770 INFO L226 Difference]: Without dead ends: 996 [2020-08-19 02:32:51,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 02:32:51,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2020-08-19 02:32:51,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 815. [2020-08-19 02:32:51,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2020-08-19 02:32:51,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1007 transitions. [2020-08-19 02:32:51,938 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1007 transitions. Word has length 61 [2020-08-19 02:32:51,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:32:51,938 INFO L479 AbstractCegarLoop]: Abstraction has 815 states and 1007 transitions. [2020-08-19 02:32:51,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:32:51,939 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1007 transitions. [2020-08-19 02:32:51,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 02:32:51,944 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:51,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:32:51,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:32:51,944 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:51,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:51,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1185420344, now seen corresponding path program 1 times [2020-08-19 02:32:51,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:51,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9595618] [2020-08-19 02:32:51,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:52,167 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:32:52,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:32:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:52,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:32:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:52,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:32:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:52,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:52,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:32:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:52,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:32:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:52,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 02:32:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:52,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:52,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:52,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:52,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:52,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:32:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:52,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:32:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:52,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 02:32:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:52,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 02:32:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:52,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:32:52,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9595618] [2020-08-19 02:32:52,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:32:52,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:32:52,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031030248] [2020-08-19 02:32:52,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:32:52,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:32:52,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:32:52,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:32:52,326 INFO L87 Difference]: Start difference. First operand 815 states and 1007 transitions. Second operand 9 states. [2020-08-19 02:32:53,270 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:53,539 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:32:53,808 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:54,055 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:55,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:32:55,236 INFO L93 Difference]: Finished difference Result 1863 states and 2473 transitions. [2020-08-19 02:32:55,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 02:32:55,239 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-19 02:32:55,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:32:55,247 INFO L225 Difference]: With dead ends: 1863 [2020-08-19 02:32:55,248 INFO L226 Difference]: Without dead ends: 1072 [2020-08-19 02:32:55,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 02:32:55,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2020-08-19 02:32:55,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 841. [2020-08-19 02:32:55,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 841 states. [2020-08-19 02:32:55,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1035 transitions. [2020-08-19 02:32:55,414 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1035 transitions. Word has length 88 [2020-08-19 02:32:55,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:32:55,415 INFO L479 AbstractCegarLoop]: Abstraction has 841 states and 1035 transitions. [2020-08-19 02:32:55,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:32:55,415 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1035 transitions. [2020-08-19 02:32:55,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 02:32:55,419 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:55,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:32:55,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:32:55,420 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:55,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:55,421 INFO L82 PathProgramCache]: Analyzing trace with hash -910660730, now seen corresponding path program 1 times [2020-08-19 02:32:55,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:55,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118485685] [2020-08-19 02:32:55,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:55,683 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:32:55,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:32:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:55,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:32:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:55,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:32:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:55,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:55,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:32:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:55,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:32:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:55,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 02:32:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:55,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:55,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:55,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:55,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:55,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:32:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:55,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:32:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:55,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 02:32:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:55,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 02:32:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:55,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:32:55,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118485685] [2020-08-19 02:32:55,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:32:55,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 02:32:55,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211037118] [2020-08-19 02:32:55,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 02:32:55,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:32:55,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 02:32:55,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 02:32:55,858 INFO L87 Difference]: Start difference. First operand 841 states and 1035 transitions. Second operand 11 states. [2020-08-19 02:32:56,366 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:56,608 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:56,847 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:57,596 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:57,852 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:58,145 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:59,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:32:59,480 INFO L93 Difference]: Finished difference Result 1917 states and 2592 transitions. [2020-08-19 02:32:59,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 02:32:59,482 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2020-08-19 02:32:59,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:32:59,490 INFO L225 Difference]: With dead ends: 1917 [2020-08-19 02:32:59,490 INFO L226 Difference]: Without dead ends: 1100 [2020-08-19 02:32:59,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 02:32:59,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2020-08-19 02:32:59,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 857. [2020-08-19 02:32:59,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 857 states. [2020-08-19 02:32:59,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1051 transitions. [2020-08-19 02:32:59,661 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1051 transitions. Word has length 88 [2020-08-19 02:32:59,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:32:59,661 INFO L479 AbstractCegarLoop]: Abstraction has 857 states and 1051 transitions. [2020-08-19 02:32:59,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 02:32:59,662 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1051 transitions. [2020-08-19 02:32:59,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 02:32:59,665 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:59,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:32:59,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 02:32:59,666 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:59,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:59,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1039639525, now seen corresponding path program 1 times [2020-08-19 02:32:59,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:59,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152466170] [2020-08-19 02:32:59,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:33:00,019 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:33:00,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:33:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:33:00,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:33:00,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:33:00,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:33:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:33:00,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:33:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:33:00,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:33:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:33:00,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:33:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:33:00,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 02:33:00,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:33:00,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:33:00,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:33:00,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:33:00,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:33:00,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:33:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:33:00,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:33:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:33:00,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:33:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:33:00,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 02:33:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:33:00,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 02:33:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:33:00,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:33:00,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152466170] [2020-08-19 02:33:00,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:33:00,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 02:33:00,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107420261] [2020-08-19 02:33:00,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 02:33:00,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:33:00,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 02:33:00,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:33:00,169 INFO L87 Difference]: Start difference. First operand 857 states and 1051 transitions. Second operand 7 states. [2020-08-19 02:33:00,724 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:33:01,218 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:33:03,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:33:03,972 INFO L93 Difference]: Finished difference Result 2846 states and 3865 transitions. [2020-08-19 02:33:03,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 02:33:03,972 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 88 [2020-08-19 02:33:03,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:33:03,984 INFO L225 Difference]: With dead ends: 2846 [2020-08-19 02:33:03,984 INFO L226 Difference]: Without dead ends: 2013 [2020-08-19 02:33:03,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-19 02:33:03,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2020-08-19 02:33:04,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 1711. [2020-08-19 02:33:04,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1711 states. [2020-08-19 02:33:04,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 2117 transitions. [2020-08-19 02:33:04,267 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 2117 transitions. Word has length 88 [2020-08-19 02:33:04,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:33:04,268 INFO L479 AbstractCegarLoop]: Abstraction has 1711 states and 2117 transitions. [2020-08-19 02:33:04,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 02:33:04,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 2117 transitions. [2020-08-19 02:33:04,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-19 02:33:04,271 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:33:04,271 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:33:04,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 02:33:04,272 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:33:04,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:33:04,272 INFO L82 PathProgramCache]: Analyzing trace with hash 745790239, now seen corresponding path program 1 times [2020-08-19 02:33:04,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:33:04,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864535980] [2020-08-19 02:33:04,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:33:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 02:33:04,342 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 02:33:04,342 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 02:33:04,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 02:33:04,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 02:33:04 BoogieIcfgContainer [2020-08-19 02:33:04,382 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 02:33:04,384 INFO L168 Benchmark]: Toolchain (without parser) took 32247.50 ms. Allocated memory was 143.7 MB in the beginning and 645.9 MB in the end (delta: 502.3 MB). Free memory was 105.3 MB in the beginning and 389.4 MB in the end (delta: -284.1 MB). Peak memory consumption was 218.2 MB. Max. memory is 7.1 GB. [2020-08-19 02:33:04,384 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 143.7 MB. Free memory was 125.2 MB in the beginning and 125.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 02:33:04,388 INFO L168 Benchmark]: CACSL2BoogieTranslator took 660.77 ms. Allocated memory was 143.7 MB in the beginning and 204.5 MB in the end (delta: 60.8 MB). Free memory was 105.1 MB in the beginning and 171.0 MB in the end (delta: -65.9 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-08-19 02:33:04,392 INFO L168 Benchmark]: Boogie Preprocessor took 102.12 ms. Allocated memory is still 204.5 MB. Free memory was 171.0 MB in the beginning and 166.6 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2020-08-19 02:33:04,396 INFO L168 Benchmark]: RCFGBuilder took 1124.22 ms. Allocated memory was 204.5 MB in the beginning and 231.2 MB in the end (delta: 26.7 MB). Free memory was 166.6 MB in the beginning and 180.5 MB in the end (delta: -13.9 MB). Peak memory consumption was 73.8 MB. Max. memory is 7.1 GB. [2020-08-19 02:33:04,397 INFO L168 Benchmark]: TraceAbstraction took 30355.95 ms. Allocated memory was 231.2 MB in the beginning and 645.9 MB in the end (delta: 414.7 MB). Free memory was 180.5 MB in the beginning and 389.4 MB in the end (delta: -208.9 MB). Peak memory consumption was 205.8 MB. Max. memory is 7.1 GB. [2020-08-19 02:33:04,404 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 143.7 MB. Free memory was 125.2 MB in the beginning and 125.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 660.77 ms. Allocated memory was 143.7 MB in the beginning and 204.5 MB in the end (delta: 60.8 MB). Free memory was 105.1 MB in the beginning and 171.0 MB in the end (delta: -65.9 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 102.12 ms. Allocated memory is still 204.5 MB. Free memory was 171.0 MB in the beginning and 166.6 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1124.22 ms. Allocated memory was 204.5 MB in the beginning and 231.2 MB in the end (delta: 26.7 MB). Free memory was 166.6 MB in the beginning and 180.5 MB in the end (delta: -13.9 MB). Peak memory consumption was 73.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30355.95 ms. Allocated memory was 231.2 MB in the beginning and 645.9 MB in the end (delta: 414.7 MB). Free memory was 180.5 MB in the beginning and 389.4 MB in the end (delta: -208.9 MB). Peak memory consumption was 205.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 506]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L159] int pumpRunning = 0; [L160] int systemActive = 1; [L399] int waterLevel = 1; [L400] int methaneLevelCritical = 0; [L511] int cleanupTimeShifts = 4; [L802] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L584] int retValue_acc ; [L585] int tmp ; [L589] FCALL select_helpers() [L590] FCALL select_features() [L591] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L591] RET, EXPR valid_product() [L591] tmp = valid_product() [L593] COND TRUE \read(tmp) [L595] FCALL setup() [L596] CALL runTest() [L578] CALL test() [L84] int splverifierCounter ; [L85] int tmp ; [L86] int tmp___0 ; [L87] int tmp___1 ; [L88] int tmp___2 ; [L91] splverifierCounter = 0 [L93] COND TRUE 1 [L95] COND TRUE splverifierCounter < 4 [L101] tmp = __VERIFIER_nondet_int() [L103] COND TRUE \read(tmp) [L105] CALL waterRise() [L417] COND TRUE waterLevel < 2 [L418] waterLevel = waterLevel + 1 [L105] RET waterRise() [L111] tmp___0 = __VERIFIER_nondet_int() [L113] COND TRUE \read(tmp___0) [L115] CALL changeMethaneLevel() [L429] COND FALSE !(\read(methaneLevelCritical)) [L432] methaneLevelCritical = 1 [L115] RET changeMethaneLevel() [L121] tmp___2 = __VERIFIER_nondet_int() [L123] COND TRUE \read(tmp___2) [L138] CALL timeShift() [L167] COND FALSE !(\read(pumpRunning)) [L174] COND TRUE \read(systemActive) [L176] CALL processEnvironment() [L248] int tmp ; [L251] COND FALSE !(\read(pumpRunning)) [L266] CALL processEnvironment__wrappee__lowWaterSensor() [L222] int tmp ; [L225] COND FALSE !(\read(pumpRunning)) [L240] CALL processEnvironment__wrappee__highWaterSensor() [L196] int tmp ; [L199] COND TRUE ! pumpRunning [L201] CALL, EXPR isHighWaterLevel() [L345] int retValue_acc ; [L346] int tmp ; [L347] int tmp___0 ; [L351] CALL, EXPR isHighWaterSensorDry() [L479] int retValue_acc ; [L482] COND FALSE !(waterLevel < 2) [L486] retValue_acc = 0 [L487] return (retValue_acc); [L351] RET, EXPR isHighWaterSensorDry() [L351] tmp = isHighWaterSensorDry() [L353] COND FALSE !(\read(tmp)) [L356] tmp___0 = 1 [L358] retValue_acc = tmp___0 [L359] return (retValue_acc); [L201] RET, EXPR isHighWaterLevel() [L201] tmp = isHighWaterLevel() [L203] COND TRUE \read(tmp) [L205] CALL activatePump() [L276] pumpRunning = 1 [L205] RET activatePump() [L240] RET processEnvironment__wrappee__highWaterSensor() [L266] RET processEnvironment__wrappee__lowWaterSensor() [L176] RET processEnvironment() [L182] CALL __utac_acc__Specification1_spec__1() [L608] int tmp ; [L609] int tmp___0 ; [L613] CALL, EXPR isMethaneLevelCritical() [L438] int retValue_acc ; [L441] retValue_acc = methaneLevelCritical [L442] return (retValue_acc); [L613] RET, EXPR isMethaneLevelCritical() [L613] tmp = isMethaneLevelCritical() [L615] COND TRUE \read(tmp) [L617] CALL, EXPR isPumpRunning() [L300] int retValue_acc ; [L303] retValue_acc = pumpRunning [L304] return (retValue_acc); [L617] RET, EXPR isPumpRunning() [L617] tmp___0 = isPumpRunning() [L619] COND TRUE \read(tmp___0) [L621] CALL __automaton_fail() [L506] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 251 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 30.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 24.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1098 SDtfs, 1942 SDslu, 1136 SDs, 0 SdLazy, 5817 SolverSat, 1211 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 277 GetRequests, 186 SyntacticMatches, 5 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 9.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1711occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 1219 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 618 NumberOfCodeBlocks, 618 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 518 ConstructedInterpolants, 0 QuantifiedInterpolants, 157644 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 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...